The Taub Faculty of Computer Science Events and Talks

Deep learning has become pervasive in everyday life, powering language applications like Apple's Siri, Amazon's Alexa, and Google Translate. The inherent limitation of these deep learning systems, however, is that they often function as a ''black box'', preventing researchers and users from discerning the roles ...
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The 2018 Workshop in Cryptology, organized by the Technion Hiroshi Fujiwara Cyber Security Research Center, will be held on Monday, December 31 2018, between 9:00-16:20, in the Auditorium of the Water Institute, Technion. Most talks will be given in Hebrew but some in English and ...
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For a set M = {−µ, −µ + 1, . . . , λ} \ {0} with non-negative integers λ, µ Small covering sets play an important role in codes correcting limited-magnitude errors. We use some number theoretic methods to give an explicit construction of ...
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In formal verification, one uses mathematical tools in order to prove that a system satisfies a given specification. A limitation of traditional formal-verification algorithms and tools concerns the certification of positive results: while a verifier may answer that a system satisfies its specification, a designer ...
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Edit distance is a measure of similarity of two strings based on the minimum number of character insertions, deletions, and substitutions required to transform one string into the other. The edit distance can be computed exactly using a dynamic programming algorithm that runs in quadratic ...
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Sediment resuspension is the transport of previously settled particles from the seafloor back into the overlying water. Measuring these abrupt and spatially varying events is challenging. Existing in-situ approaches are very localized. We presented a novel underwater wide field imaging system designed to (a) observe ...
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Distributed training can significantly reduce the training time of neural networks. Despite its potential, however, distributed training has not been widely adopted due to the difficulty of scaling the training process. Existing methods suffer from slow convergence and low final accuracy when scaling to large ...
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Constrained codes have been studied actively for a long time with numerous applications in data recording and data communication systems. Recently, various types of one-dimensional and two-dimensional constrained codes have attracted significant attention owing to some applications for flash memories. ICI-free codes (Amit Berman and ...
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Despite their superb empirical performance, deep learning models for natural language processing (NLP) are often considered black boxes, as relatively little is known as to what accounts for their success. This lack of understanding turns model development into a slow and expensive trial-and-error process, which ...
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In the classical Node-Disjoint Paths (NDP) problem, we are given an n-vertex graph G, and a collection of pairs of its vertices, called demand pairs. The goal is to route as many of the demand pairs as possible, where to route a pair we need ...
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Optimal transport (OT) has become a fundamental mathematical tool at the interface between calculus of variations, partial differential equations and probability. It took however much more time for this notion to become mainstream in numerical applications. This situation is in large part due to the ...
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A primitive k-batch code encodes a string x of length n into string y of length N, such that each multiset of k symbols from x has k mutually disjoint recovering sets from y. The definition of such codes is motivated by applications to load ...
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As software has grown increasingly critical to our society's infrastructure, mechanically-verified software has grown increasingly important, feasible, and prevalent. Proof assistants have seen tremendous growth in recent years because of their success in the mechanical verification of high-value applications in many areas, including cyber security, ...
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The tremendous success of the Machine Learning paradigm heavily relies on the development of powerful optimization methods. The canonical algorithm for training learning models is SGD (Stochastic Gradient Descent), yet this method has its limitations. It is often unable to exploit useful statistical/geometric structure, it ...
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Distributed Denial of Service (DDoS) attacks are doubling in both number and volume on a yearly basis. These pose a critical threat to financial institutions and cloud providers that struggle to keep their services available and secure. To mitigate the attacks, operators rely on middleboxes ...
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As algorithmic prediction systems have become more widespread, so too have concerns that these systems may be discriminatory against groups of people protected by laws and ethics. We present a recent line of work that takes a complexity theoretic perspective towards combating discrimination in prediction ...
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Multi-access Edge Computing (MEC) is a new network architecture that allows applications and network services to be executed at the edge of the network. This is done by running these services on commodity servers that are placed in close proximity to the network edge and ...
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We all capture the world around us through digital data such as images, videos and sound. However, in many cases, we are interested in certain properties of the data that are either not available or difficult to perceive directly from the input signal. My goal ...
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Sparse coding refers to the pursuit of the sparsest representation of a signal in a typically overcomplete dictionary. From a Bayesian perspective, sparse coding provides a Maximum a Posteriori (MAP) estimate of the unknown vector under a sparse prior. Various nonlinear algorithms are available to ...
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List-decoding is an important primitive in the theory of error correcting codes, and it has long been a goal to obtain explicit constructions of capacity-achieving, efficiently list-decodable codes. Folded Reed-Solomon Codes (Guruswami-Rudra 2008) and Multiplicity codes (Guruswami-Wang 2011, Kopparty 2012) are two such constructions. However, ...
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Today, extrusion is a one of the most important techniques for manufacturing continuous polymer profiles. Despite their widespread use, extruded products initially often suffer from both poor shape quality and material inhomogeneities due to inadequate process design. In an industrial environment, the elements of the ...
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We introduce load-balanced fractional repetition (LBFR) codes, which are a strengthening of fractional repetition (FR) codes. LBFR codes have the additional property that multiple node failures can be sequentially repaired by downloading no more than one block from any other node. This allows for better ...
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We explore the power of interactive proofs with a distributed verifier. In this setting, the verifier consists of $n$ nodes and a graph $G$ that defines their communication pattern. The prover is a single entity that communicates with all nodes by short message. The goal ...
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Cryptographic hash functions are the basis of many important and far reaching results in cryptography, complexity theory, and beyond. In particular, hash functions are the primary building block of fundamental applications like digital signatures and verifiable computation, and they are the tool underlying the proofs-of-work ...
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In this talk, we will present error-correcting codes for the storage of data in synthetic deoxyribonucleic acid (DNA). We investigate a storage model where a data set is represented by an unordered set of M sequences, where each sequence is a vector of length L ...
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We propose a novel discrete scheme for simulating viscous thin films at real-time frame rates. Our scheme is based on a new formulation of the gradient flow approach, that leads to a discretization based on local stencils that are easily computable on the GPU. Our ...
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Quantum computers may be able to solve certain problems that are so complicated that even the fastest supercomputer would take millions of years to provide an answer. Entanglement and superposition are quantum phenomena which can be tamed in order to build such a machine. Optimising ...
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Consider a directed analogue of the random graph process on $n$ vertices, whereby the $n^2-n$ directed edges are ordered uniformly at random and revealed one at a time, giving a nested sequence of directed graphs $D_0,D_1,\dots,D_m, \dots$. In this setting, one may ask about events ...
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The steady rise of intelligence and autonomy over a scale of distributed, connected and smart components is heralding the era of Internet-of-Intelligence. Without adequate safeguards in place, such components can lead to terrible consequences. In this talk, I will discuss three aspects - namely, vulnerability, ...
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We are happy to invite your to the first of series of meetings on career and job seeking which will be held at CS. How to turn a degree to a career? Dr. YonathanYaniv, a CS graduate and algorithms and learning system researcher at YOTPO, ...
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Going from driving assistance to autonomous driving, requires a deeper understanding of the surroundings of the vehicle. Driving assistance systems provide technological solutions that help with the driving process, while these systems usually provide multiple features that enhance driving safety (such as automate lighting, adaptive ...
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Program synthesis, the task of automatically finding a program that satisfies a given user intent specification, has been successfully applied to aid commercial data wrangling, software engineering, and question answering. While data-driven (deep learning) and symbolic (formal logic) techniques are both commonly used for program ...
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One of the most promising error correcting schemes is the family of Spatially-Coupled (SC) LDPC codes. SC-LDPC codes achieve capacity universally on memoryless binary symmetric channels, and their special structure can be exploited to implement low-latency high-throughput decoders. In this talk, a new type of ...
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We show that bounded independent distributions under perturbation of noise fool product tests, which are products of bounded functions defined on disjoint inputs. These results have found applications in coding theory and pseudorandomness. In this talk, I will talk about communication and space lower bounds ...
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There is a widening gap in the datacenter between data growth and stagnating CPU performance. This gap limits our ability to solve more complex problems and prompts us to revisit both the architecture of servers and the ways we manage and process data. In my ...
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The emergence of very effective deep learning techniques in recent years has affected almost all areas of research remotely related to AI, and computer vision in particular has been changed irreversibly. In this talk I will focus on visual object recognitions. The incredible recent progress ...
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Trusted execution environments, and particularly the Software Guard eXtensions (SGX) included in recent Intel x86 processors, gained significant traction in recent years. A long track of research papers, and increasingly also real-world industry applications, take advantage of the strong hardware-enforced confidentiality and integrity guarantees provided ...
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Codes with locality and/or availability have been extensively studied in recent years, including locally repairable codes (LRC), PIR codes, batch codes, etc. Usually in such a code of dimension s, we focus on the recovering sets only for the s information symbols. We propose a ...
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Concurrent data structures are widely used in modern multi-core architectures, providing atomicity (linearizability) for each concurrent operation. However, it is often desirable to execute several operations on multiple data structures atomically. We present a design of a transactional framework supporting linearizable transactions of multiple operations ...
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or a vector space F^n over a field F, an (η, ß)-dimension expander of degree d is a collection of d linear maps Γ_j : F^n \to F^n such that for every subspace U of F^n of dimension at most ηn, the image of U ...
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Global localization for robotic vehicles is an essential backbone for robust autonomous navigation. While GPS systems offer effective solutions in outdoor environments, they are inadequate for providing positioning in indoor settings. In order to solve this problem, we investigate a special vision-based approach. Vision systems ...
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Machine learning (ML) has deeply impacted many areas of computer science, including computer vision, natural language processing, computational biology, and beyond. Yet, computer networking has largely withstood the ML tide until recently. Recent advances suggest that this might be changing. We ask whether/when traditional network ...
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Deep learning has become an extremely effective tool for image classification and image restoration problems. Here, we apply deep learning to microscopy, and demonstrate how neural networks can exploit the chromatic dependence of the point-spread function to classify the colors of single emitters imaged on ...
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At its core, coding theory studies how many elements of a (finite) vector space one can pack subject to the constraint that the elements are well-spread. Typically, the notion of closeness is that of Hamming distance, that is, the distance between two vectors is the ...
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In this talk I will discuss a new tangent estimator for 3D digital curves. The proposed estimator is based on 3D digital line recognition, and it is an extension of a similar 2D tangent estimator proposed for tangent estimating along digital contours. The main advantages ...
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We consider the following simple random experiment to determine the impact of concurrency on the performance of binary search trees: n randomly permuted keys arrive one at a time. When a new key arrives, it is first placed into a buffer of size c. Whenever ...
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Data intensive tasks have been ubiquitous ever since the data science revolution. The immensity of contemporary datasets no longer allows computations to be done on a single machine, and distributed computations are inevitable. Since most users cannot afford to maintain a network of commodity servers, ...
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Large points cloud X in $R^{n\times D}$ are often assumed to be sampled from a k-dimensional manifold where $k 1$). However, there is no evidence that this technique extends to other manifolds. This work aims to verify how the multi-scale singular value analysis of a ...
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Pseudorandom functions (PRFs) are one of the fundamental building blocks in cryptography. Traditionally, there have been two main approaches for PRF design: the "practitioner's approach" of building concretely-efficient constructions based on known heuristics and prior experience, and the "theoretician's approach" of proposing constructions and reducing ...
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Medical ultrasound (US) is a widespread imaging modality owing its popularity to cost efficiency, portability, speed, and lack of harmful ionizing radiation. At the same time, there are trade-offs among different US imaging qualities such as frame-rate, resolution, signal-to-noise-ratio and contrast. So far, these trade-offs ...
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Scaling of computing performance enables new applications and greater value from computing. With the end of Moore’s Law and Dennard Scaling, continued performance scaling will be due primarily to specialization. Graphics processing units are an ideal platform on which to build domain-specific accelerators. They provide ...
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The Convolutional Sparse Coding (CSC) model has recently gained considerable traction in the signal and image processing communities. By providing a global, yet tractable, model that operates on the whole image, the CSC was shown to overcome several limitations of the patch-based sparse model while ...
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In many Natural Language Processing classification tasks, the label space consists of the entire vocabulary, and therefore might have hundreds of thousands of labels. Important tasks such as language modeling, machine translation and dialog systems all have vocabulary label sets. Due to Zipf's law, a ...
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We consider the pose-estimation problem of aligning (rotating and translating) a set of n points to a corresponding set of n lines, both on the plane. The goal is to minimize the sum of distances between the matched point-line pairs over all possible translations, rotations, ...
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The Hiroshi Fujiwara Cyber Security Research Center will hold the 7th Summer School on Cyber and Computer Security: "Trusted Execution and Hardware Side Channels". The event will take place on Tuesday-Thursday, October 2nd-4th, 2018 at the Technion, Haifa. Chairs: Mark Silberstein, Technion Yossi Oren, Ben-Gurion ...
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This work investigates algorithms and data structures for volumetric representation (V-reps) of 3D objects, representing the interior of the object in addition to its boundaries, extending the contemporary Boundary representation (B-rep) common scheme. In recent years, there is a growing and emerging need for a ...
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A d-dimensional polycube is a facet-connected set of cells (cubes) on the d-dimensional cubical lattice. Let Ad(n) denote the number of d-dimensional polycubes (distinct up to translations) with n cubes, and λd denote the limit of the ratio Ad(n+1)/Ad(n) as n approaches infinity. The exact ...
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Using a mold or die, primary shaping manufacturing processes form material from an initially unshaped state (usually melt) into a desired shape. Examples of such a process are extrusion or high-pressure die casting — processes that are responsible for many products of our everyday life, ...
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Cellular metabolic demands change throughout the cell cycle. Nevertheless, a characterization of how metabolic fluxes adapt to the changing demands throughout the cell cycle is lacking. The rate of metabolic reactions and pathways in living cells, also referred to as metabolic flux, is not a ...
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As the cyber security threat continues to grow, we need to better defend our systems. One of the ways to improve the security of a computer system is to isolate its critical assets from the main execution environment. These critical assets are handled in a ...
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Recent advances in deep learning and convolutional neural networks (CNNs) have had a profound impact on almost every computer vision task. However, generic (non-semantic) image segmentation is a notable exception despite it being one of the most fundamental and widely studied tasks in this field. ...
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Moving from the concept of discrete sequences of 2D slides towards smooth 3D multimodal hierarchical presentations promises many improvements in quality and effectiveness of presentations. On the other hand, such a move poses many difficulties, one of which is how to arrange content in a ...
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Bluetooth is a widely deployed platform for wireless communications between mobile devices. It uses authenticated Elliptic Curve Diffie-Hellman for its key exchange. We show that the authentication provided by the Bluetooth pairing protocols is insufficient and does not provide the promised MitM protection. We present ...
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Designing a new drug is an expensive and lengthy process. The first stage is drug discovery, in which potential drugs are identified before selecting a candidate drug to progress to clinical trials. As the space of potential molecules is very large (10^23-10^60), a common technique ...
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Text processing on the web is challenging due to the use of informal and ungrammatical language. Yet, this is a very prominent domain for Natural Language Processing, due to the growing volume of textual information that is communicated through Internet pages and social media platforms. ...
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Efficient and sustainable conversion of biomass into valuable products is a major challenge for bioengineering. The composition of the feedstock biomass and the ability of microorganisms to efficiently ferment it are two most critical factors influencing the process efficiency. Intelligent design that addresses both these ...
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In Attribute-Based Signatures an authority can generate multiple signing keys, where each key is associated with a constraint f. A key respective to f can sign a message x only if f(x)=0. The security requirements are unforgeability and key privacy (signatures should not expose the ...
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A coreset (or core-set) of a dataset is its semantic compression with respect to a set of classifiers, such that learning the (small) coreset provably yields an approximate classifier of the original (full) dataset. Composable coresets also allow handling streaming and distributed data, e.g. using ...
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CS Labs invited you to visit the Yearly Project Fair that will be held on Tuesday, June 26, 2018, starting at 13:00, in the CS Taub Lobby and 1st Floor. More details in the attached poster. You are all invtied!
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A polyomino is an edge-connected set of cells on the square lattice. The problem of counting poyominoes dates back to the 1950s when it was studied in parallel in the fields of combinatorics and statistical physics. The study of polyominoes usually classifies polyominoes by their ...
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In this talk I will sketch two lower bound techniques for distributed models under bandwidth restrictions. The first is via reductions from the two party communication model, which is a well known technique for achieving lower bounds in distributed computing. I will show a new ...
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We present a new structure-preserving numerical scheme for solving the Euler–Poincaré Differential (EPDiff) equation on arbitrary triangle meshes. Unlike existing techniques, our method solves the difficult non-linear EPDiff equation by constructing energy preserving, yet fully explicit, update rules. Our approach uses standard differential operators on ...
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Bugs, possibly leading to security flaws, are inevitable in the extremely complex modern processors. Some of such bugs may be later fixed in the field by patching processor firmware. In this presentation we will review mechanisms provided by the Intel Software Guard Extensions (SGX) architecture ...
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Collision resistant hashing is a fundamental concept that is the basis for many of the important cryptographic primitives and protocols. Collision resistant hashing is a family of compressing functions such that no efficient adversary can find {\em any} collision given a random function in the ...
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Single Image Super-Resolution (SISR) aims to recover a high-resolution image from a given low resolution version of it (the given image is assumed to be a blurred, down- sampled and noisy version of the original image). Video Super Resolution (VSR) targets series of given images, ...
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The 8th CS Research Day for graduate studies will be held on Monday, June 18, 2018 between 15:00-17:00, at the lobby of the CS Taub Building. Research Day events are opportunity for our graduate students to expose their researches using posters and presentations to CS ...
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We introduce a 3D shape generative model based on deep neural networks. A new image-like (i.e., tensor) data representation for genus-zero 3D shapes is devised. It is based on the observation that complicated shapes can be well represented by multiple parameterizations (charts), each focusing on ...
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The 8th annual international TCE conference on Deep Learning: Theory & Practice will take place on Thurs June 14, 2018 at the Technion Electrical Engneering Department, Meyer 280, and will focus on why is it working so well, and how can we improve it in ...
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The task of rendezvous (also called gathering) calls for a meeting of two or more mobile entities, starting from different positions in some environment. Those entities are called mobile agents or robots, and the environment can be a network modelled as a graph or a ...
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Triangle counting is a scalable analytic that benefits from a large number of processors. Similar to many other graph analytics, the control flow for each thread of triangle counting algorithms is determined by the input graph. This data dependency makes both load-balancing and compiler optimization ...
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Over the past decade, the computer science research community has converged around a formal notion of data privacy, known as differential privacy, and has made substantial progress in establishing the theoretical foundations of this notion. In this talk, I will give a brief overview of ...
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Dictionary Learning techniques aim to find sparse signal representations that capture prominent characteristics in the given data. For signals residing on non-Euclidean topologies, represented by weighted graphs, an additional challenge is incorporating the underlying geometric structure of the data domain into the learning process. In ...
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In typical imaging systems, an image/video is first acquired, then compressed for transmission or storage, and eventually presented to human observers using different and often imperfect display devices. While the resulting quality of the perceived output image may severely be affected by the acquisition and ...
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Covert communication considers the following problem -- if Alice wishes towhisper to Bob while ensuring that the eavesdropper Eve cannot even detect whether or not Alice is whispering, how much can she whisper. Ensuring such a stringent security requirement can be met requires new ideas ...
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Subdivision surfaces are a mainstream methodology in computer graphics and geometry processing to create smooth surfaces with a multiresolution hierarchy. The recent popularity of Isogeometric Analysis brought a renewed interest in such surfaces for the purpose of solving differential equations. We define subdivision methods for ...
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Oblivious RAM (ORAM) is a cryptographic primitive that allows a client to securely execute RAM programs over data that is stored in an untrusted server. Distributed Oblivious RAM is a variant of ORAM, where the data is stored in m non-colluding servers. Extensive research over ...
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Matching pixels is used in various computer vision applications such as template matching, tracking and image editing. I will give an overview of my work in this field with an emphasize on two components. The first is how to represent the data, and the second ...
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The Technion Hiroshi Fujiwara Cyber Security Research Center is happy to invite you to the Qubit 2018 - Quantum Communication: Celebrating Bennett & Brassard's Wolf Prize for Physics conference to be held on Sunday, June 3rd, 2018 at the Taub CS Building, Technion. Chairs:Eli Biham, ...
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The dynamic NFV placement problem captures one of the main challenges facing the telecom industry following the emergence of the Network Function Virtualization (NFV) networking paradigm, that is, deciding the placement of network functions while taking into consideration the dynamic nature of networks and workloads. ...
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The bulk of the talk will deal with space requirements of reliable storage algorithms in asynchronous distributed systems. A number of recent works have used codes in order to achieve a better storage cost than the well-known replication approach. However, a closer look reveals that ...
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The availability of large idea repositories (e.g., the U.S. patent database) could significantly accelerate innovation and discovery by providing people with inspiration from solutions to analogous problems. However, finding useful analogies in these large, messy, real-world repositories remains a persistent challenge for either human or ...
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Image restoration algorithms are typically evaluated by some distortion measure (e.g. PSNR, SSIM, IFC, VIF) or by human opinion scores that quantify perceived perceptual quality. In this work, we prove mathematically that distortion and perceptual quality are at odds with each other. Specifically, we study ...
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We are happy to invite your to the sixth of series of meetings on career and job seeking which will be held at CS, on Monay, May 28, at 17:00, in room 337, CS Taub Building. Sarah Karu (Talent management specialist) will give a talk ...
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We propose a new iterative algorithm for computing smooth cross fields on triangle meshes that is simple, easily parallelizable on the GPU and finds solutions with lower energy and fewer cone singularities than state-of-the-art methods. Our approach is based on a formal equivalence, which we ...
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Set functions with convenient properties (such as submodularity) often arise in algorithmic game theory, and allow for improved properties of optimization algorithms and mechanisms. It is natural to ask (e.g., in the context of data driven applications) how robust such properties are, and whether small ...
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Visual computing is a wide area that includes computer graphics and image processing, where the "eyeball-norm" rules. I will briefly discuss two case studies involving numerical methods and analysis applied to this area. The first case study involves motion simulation and calibration of soft objects ...
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Who needs a new Instruction Set Architecture (ISA)? Architectures have reached some unspoken Truce through Markets Segment dominance (IA64 - PC and Server market, ARM - Mobile market). IA and ARM have ruled the PC/Server and Mobile markets, respectively, for years and have prevailed aggressive ...
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We present a novel approach to template matching that is efficient, can handle partial occlusions, and comes with provable performance guarantees. A key component of the method is a reduction that transforms the problem of searching a nearest neighbor among N high-dimensional vectors, to searching ...
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Modern software systems are expected to be secure and contain all the latest features, even when new versions of software are released multiple times an hour. Each system may include many interacting packages. The problem of installing multiple dependent packages has been extensively studied in ...
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Computer systems have been developed tremendously over the past few years and as a result new challenges arise in the fields of security and reliability. In this talk I will present two approaches that utilize the operating system for providing solutions to urgent challenges in ...
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Recent progress in imaging technologies leads to a continuous growth in biomedical data, which can provide better insight into important clinical and biological questions. Advanced machine learning techniques, such as artificial neural networks are brought to bear on addressing fundamental medical image computing challenges such ...
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Oblivious RAM (ORAM) is a cryptographic primitive that allows a client to securely execute RAM programs over data that is stored in an untrusted server. Distributed Oblivious RAM is a variant of ORAM, where the data is stored in m non-colluding servers. Extensive research over ...
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In digital geometry, Euclidean objects are represented by their discrete approximations e.g., subsets of the lattice of integers. Rigid motions of such sets have to be defined as maps from and onto a given discrete space. One way to design such motions is to combine ...
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The review will include the main modern cyber security challenges that exists in vehicles today and in the coming future. There will specific focus on security aspects in vehicle-to-vehicle communication (v2v or C2C) , includes privacy , authenticity and integrity of the communication in the ...
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In extreme classification problems, machine learning algorithms are required to map instances to labels from an extremely large label set. We build on a recent extreme classification framework with logarithmic time and space, and on a general approach for error correcting output coding (ECOC), and ...
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A recent principled approach to information extraction from text views the query as an ordinary relational query, but not on ordinary relations; instead, the relations are tuples of intervals, or "spans," extracted from text documents. A prominent example is Fagin et al.'s "regular spanners," which ...
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In this talk we will present improvements to the accuracy, memory and speed of counting algorithms. Counters are one of the most basic building blocks in networking, big data analytics and other fields. To cope with increasing line rates, counters must be accessed quickly and ...
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As the first and most popular decentralized cryptocurrency to date, Bitcoin has ignited much excitement, not only for its novel realization of a central bank-free financial instrument, but also as an alternative approach to classical problems in distributed computing and cryptographic protocols, such as reaching ...
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CS is happy to invite you to the third of series of workshops that will hand you applicable tools for working, developing and managing code projects, and this time on: "Workin with Distance Servers: How to Submit Homework without Sleeping in the Computer Farm", by ...
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In recent years, improvements in various scientific image acquisition techniques gave rise to the need for adaptive processing methods, particularly aimed for large data-sets corrupted by noise and deformations. Motivated by challenges in cryo-electron microscopy (cryo-EM), we consider the problem of reducing noise in a ...
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CS invites you to assemble a winning team and start working on a brilliant idea for the Spring Hackaton that will take place on Thursday-Friday, May 3-4, 2018 in CS Taub Building. The program will include 24 hour team work, supervised by leading tutors, refreshments ...
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We present a new model of probabilistically checkable proof (PCP), which we call "Distributed PCP": A satisfying assignment (x in {0,1}^n) to a SAT instance is shared between two parties (Alice knows x_1, ... x_{n/2}, and Bob knows x_{n/2+1},...,x_n). Their goal is to jointly write ...
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In the last decade, the human population has produced zettabytes (10^21) of digital data. This creates immense opportunities and challenges for biology research. In this talk, I will present two research directions on the intersection between genetics and data, which we dub "genetic media". First, ...
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We propose a novel measure for template matching named Deformable Diversity Similarity -- based on the diversity of feature matches between a target image window and the template. We rely on both local appearance and geometric information that jointly lead to a powerful approach for ...
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We are happy to invite your to the fifth of series of meetings on career and job seeking which will be held at CS, on Monay, April 30, at 17:00, in room 337, CS Taub Building. Mr. David Gross, Program Engineer in Facebook Israel will ...
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EUROCRYPT 2018 is the 37th Annual International Conference on the Theory and Applications of Cryptographic Techniques. Covering all aspects of cryptology, including theoretical foundations, deployment of cryptographic schemes, cryptanalysis of widely used standards, cryptographic protocols, quantum cryptography, and cryptographic currencies. This year's edition will take place ...
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We are happy to invite you to a special meeting fot graduate students that will deal this time with research career: is there research in Israeli industry and what are the current available jobs and career tracks. The event will be held at CS, on ...
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A graph learning problem is a problem of finding a hidden graph $G=(V,E)$ using edge-detecting queries, where an edge-detecting query $Q_G(S)$, for $S \subseteq V$ is: does S contain at least one edge of G? The main question is how many queries do we need ...
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A graph learning problem is a problem of finding a hidden graph $G=(V,E)$ using edge-detecting queries, where an edge-detecting query $Q_G(S)$, for $S \subseteq V$ is: does S contain at least one edge of G? The main question is how many queries do we need ...
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A k-spanner is a sparse subgraph that preserves distances up to a multiplicative factor of k. First introduced in the late 80's, spanners have been central for numerous applications, such as synchronization, compact routing tables, approximate shortest paths, and more. This talk focuses on distributed ...
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The 2018 open day invites outstanding undergraduates from all universities to come to the Technion and learn about the Computer Science and Department, to meet faculty and graduate students and to hear a fascinating talk by Moshe Levinger, Senior Manager in IBM Haifa: "Do Advanced Degrees ...
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AI, Cognitive, Analytics, IoT all run on data. This data is needed by data scientists, line of business, developers, CDOs and others. Without data, in fact, one can do very little that is interesting or of value. Object storage, the default storage for the PBs ...
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GANs have recently gained attention due to their success in generating realistic new samples of natural images, yet the extent to which such models capture the statistics of full images is poorly understood. In this work we present a simple method to evaluate generative models ...
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CS is happy to invite you to The Marconi Society conference: "The Information Era: Past, Present and Future", on Tuesday, April 24th, 2018 in Taub Auditorium 2. Guest of honor will be Prof. Andrew Viterbi, one of Qualcomm founders, who will take part in a ...
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Lattice animals are connected subgraphs of a lattice. In this talk, we consider two types of lattices, the $d$-dimensional hypercubic lattice and the triangular lattice, where the animals are frequently referred to as $d$-dimensional polycubes and polyiamonds, respectively. Denote the number of $d$-dimensional polycubes of ...
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Labeling textual data by humans can become very time-consuming and expensive, yet critical for the success of an automatic text classification system. In order to minimize the human-labeling efforts, we propose a novel active learning (AL) solution, which does not rely on existing sources of ...
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Future servers are expected to have huge amount of volatile and nonvolatile main memory that can be directly accessed by the processors. Managing such a memory hierarchy is a major concern of computer and of hardware security architects. Thus, while computer architects are aiming at ...
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Given a set of points (sites) in the plane, a Voronoi diagram is a partitioning of the plane into regions such that each region contains one site and all points closer to this site than to any other site. Voronoi diagrams have practical and theoretical ...
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This thesis addresses the problem of viewpoint estimation of an object in a given image, where the objects belong to several known categories. Convolutional Neural Networks were recently applied to this problem, leading to large improvements of state-of-the-art results. Two major approaches have been pursued: ...
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A MAGIC SQUARE is an arrangement of nxn disjoint integers on an nxn square in a way such that the n rows, the n columns and the two diagonals of the square sum to the same constant which is called THE MAGIC CONSTANT. We will ...
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The memory interface is a striking example of a hardware/software interface that is ill-suited for parallelism, and specifically for parallel access to the program's state. Even on modern computers, that interface follows the design described in the von Neumann architecture more than 70 years ago. ...
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Video scene detection is the task of temporally dividing a video into its semantic sections called "scenes" - a series of video shots depicting a high-level concept or story (action/drama scene, news segment etc.). This is an important preliminary step for effective analysis of heterogeneous ...
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CS is happy to invite you to the second of series of workshops that will hand you applicable tools for working, developing and managing code projects, and this time on: "How to work together on a code project (and to stay friends)": - How to ...
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A recent result shows that the Java type system and its type-checker are mighty enough to emulate deterministic pushdown automata (DPDAs), and hence, capable (disregarding cost) to recognize deterministic context free languages (DCFGs). The problem is of concrete practical value, since, as it turns out, ...
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The quality of unit tests gains substantial importance in modern software systems. We explore the way in which Junit tests are written in real world Java systems. We analyse 112 Java repositories and measure the quality of unit tests by finding patterns which indicate good ...
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High-availability requirements in modern software triggered the widespread adoption of eventually consistent data stores. Unfortunately, reasoning about the correctness of programs running under eventual consistency is a challenging task, largely due to the possibility of very weak system behaviors. In this talk, I will present ...
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Deep Learning has led to a dramatic leap in Super-Resolution (SR) performance in the past few years. However, being supervised, these SR methods are restricted to specific training data, where the acquisition of the low-resolution (LR) images from their high-resolution (HR) counterparts is predetermined (e.g., ...
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Large-scale storage systems lie at the heart of the big data revolution. As these systems grow in scale and capacity, their complexity grows accordingly, building on new storage media, hybrid memory hierarchies, and distributed architectures. Numerous layers of abstraction hide this complexity from the applications, ...
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eBay will hold a special event designated for graduate students on Thursday, March 22, 2018, between 10:30-12:00, in room 337, CS Taub Building. The program includes opening by Ido Guy, eBay Israel Head of Research, a lecture by Dr. Kira Radinsky, eBay Israel Chief Scientist, ...
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You are invited to the final stage of the 2018 Best Project Contest. The finalist teams will present and talk about their projects. The event will take place on Wednesday, March 21, 2018, between 12:30-15:00, in Auditorium 2, CS Taub Building. You are all invited ...
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In the classical firing squad problem, an unknown number of nodes represented by identical finite states machines is arranged on a line and in each time unit each node may change its state according to its neighbors' states. Initially all nodes are passive, except one ...
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We introduce a new approach for identifying individuals based on their motion patterns in interactive scenarios. We formalize the identification process in the context of a sequential message exchange session between the subject and the system. The subject is modeled with a probabilistic generative model ...
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We introduce a new approach for identifying individuals based on their motion patterns in interactive scenarios. We formalize the identification process in the context of a sequential message exchange session between the subject and the system. The subject is modeled with a probabilistic generative model ...
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Research in medical image analysis, especially after the deep-learning revolution, relies on access to medical image databases. Specific categories of medical images have been made available as “challenges” to facilitate scientific benchmarking. Nevertheless, R&D of real-world clinical technologies usually requires data acquired while diagnosing and ...
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We consider a multi-level aggregation problem in a weighted rooted tree, studied recently by Bienkowski et al. In this problem requests arrive over time at the nodes of the tree, and each request specifies a non-decreasing waiting costs. A request is served by sending it ...
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We unveil the existence of a vulnerability in Wi-Fi (802.11) networks, which allows an adversary to remotely launch a Denial-of- Service (DoS) attack that propagates both in time and space. This vulnerability stems from a coupling effect induced by hidden nodes. Cascading DoS attacks can ...
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Quad-Copters are versatile unmanned aircraft that are used for a myriad of tasks from manual aerial photography to autonomous surveillance. After their initial success in outdoors scenarios, indoor autonomous activity has recently been getting attention in research. Unlike the outdoor environment, which offers cheap and ...
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Quad-Copters are versatile unmanned aircraft that are used for a myriad of tasks from manual aerial photography to autonomous surveillance. After their initial success in outdoors scenarios, indoor autonomous activity has recently been getting attention in research. Unlike the outdoor environment, which offers cheap and ...
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Quad-Copters are versatile unmanned aircraft that are used for a myriad of tasks from manual aerial photography to autonomous surveillance. After their initial success in outdoors scenarios, indoor autonomous activity has recently been getting attention in research. Unlike the outdoor environment, which offers cheap and ...
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Quad-Copters are versatile unmanned aircraft that are used for a myriad of tasks from manual aerial photography to autonomous surveillance. After their initial success in outdoors scenarios, indoor autonomous activity has recently been getting attention in research. Unlike the outdoor environment, which offers cheap and ...
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Quad-Copters are versatile unmanned aircraft that are used for a myriad of tasks from manual aerial photography to autonomous surveillance. After their initial success in outdoors scenarios, indoor autonomous activity has recently been getting attention in research. Unlike the outdoor environment, which offers cheap and ...
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In 2015, Intel launched its 6th generation Core, codenamed Skylake, that implements a new ISA for security – Intel® SGX. The talk will provide a short intro to SGX for the unfortunates who have not been exposed to Intel® SGX yet, but will focus mainly ...
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Google will host a hub at CS for the 2018 Online Qualification Round of Hash Code on Thursday, March 1st, at 18:30 CET, in CS Taub 337. Participants are requested to pre-.
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Using selective regression, it is possible to increase accuracy of predictions by abstaining from answering when there is insufficient knowledge. This work is about increasing the accuracy of selective regression even further and using simple selective models to create a more complex one, by using ...
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Frequency modulation (FM) is a form of radio broadcasting which is widely used nowadays and has been for almost a century. The widest use of FM is for radio broadcasting, which is commonly used for transmitting audio signal representing voice. Due to the effect of ...
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Trying to predict which items are likely to be accessed in the near future is the basis for most cache management policies. Storage workloads are often characterized by their level of frequency bias and their level of recency bias. The former captures how well the ...
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The direct memory access (DMA) mechanism allows I/O devices to independently access the memory without CPU involvement, improving performance but exposing systems to malicious DMA attacks. Hardware vendors therefore introduced IOMMUs (I/O memory management units), allowing operating systems to defend themselves by restricting DMAs to ...
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In modern cloud infrastructures, each physical server often runs multiple virtual machines and employs a software Virtual Switch (VS) to handle their traffic. In addition to switching, the VS performs network measurements, such as identifying the most frequent flows, which are essential for networking applications ...
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We present novel probabilistic gathering algorithms for agents that can only detect the presence of other agents in front or behind them. The agents act in the plane and are identical and indistinguishable, oblivious and lack any means of direct communication. They do not have ...
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The surface separating the interior of a given object or body from its exterior defines a shape. A key challenge in computer vision is to recover the shape from missing, partial, sparse or noisy observations such as images, depth maps or position sensors. Although in ...
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Textual data written in some natural language carries concealed and valuable information within. Information Extraction (IE) is the task of automatically extracting this information in a structured representation. Standard relational database systems, who are highly suitable for representing structured information, are in fact incapable of ...
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The rapid digitization of genealogical and medical records enables the assembly of extremely large pedigree records spanning millions of individuals. Such pedigrees provide the opportunity to answer genetic and epidemiological questions in scales much larger than previously possible. Linear mixed models (LMMs) are often used ...
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When sensitive data is stored in the cloud, the only way to ensure its secrecy is by encrypting it before it is uploaded. Not only is encryption itself computationally expensive but the encryption keys must also be safely stored and the data decrypted whenever it ...
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You are invited to a special lecture and ceremony celebrating 40th Anniversary of the Lempel-Ziv Algorithm, by Prof. Meir Feder from the School of Electrical Engineering in Tel-Aviv University on: "Beyond Compression: Lempel-Ziv in Learning and Prediction". The event will take place on Monday, February ...
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How does computational learning change when one cannot store all the examples one sees in memory? This question has seen a burst of interest in the past couple of years, leading to the surprising theorem that there exist simple concepts (parities) that require an extraordinary ...
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A tree decomposition of a graph facilitates computations by grouping vertices into bags that are interconnected in an acyclic structure; hence their importance in a plethora of problems such as query evaluation over databases and inference over probabilistic graphical models. The relative benefit from different ...
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Secure system design should be guided by two principles: (1) system security should not impede third-party developers, who are often the main source of innovation, and (2) systems that secure third-party extensions also improve security by reducing the amount of specially-privileged first-party code. Unfortunately, very ...
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We consider the image classification problem using deep models. Most of the works in the recent years consider only the flat precision (FP) measure as a benchmark. We follow a work done in recent years (called DeVISE), where a new measure named Hierarchical Precision (HP) ...
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A set of vertices S resolves a graph if every vertex is uniquely determined by its vector of distances to the vertices in S. The metric dimension of a graph is the minimum cardinality of a resolving set of the graph. Fix a connected graph ...
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Many problems in geometry processing, graph theory, and machine learning involve optimizations whose variables are defined over a geometric domain. The geometry of the domain gives rise to geometric structure in the optimization problem itself. In this talk, I will show how leveraging geometric structure ...
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Alterations in metabolic activity in tumors provide novel means to selectively target cancer cells. A powerful tool for identifying genes essential for cancer cell proliferation and survival is genome-scale RNAi and CRISPR-based genetic silencing screens. Integration of the measured gene essentiality datasets with genomic characterization ...
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While deep learning methods in Natural Language Processing are arguably overhyped, recurrent neural networks (RNNs), and in particular gated recurrent networks like the LSTM, emerge as very capable learners for sequential data. Thus, my group started using them everywhere. After briefly explaining what they are ...
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The CS Computer Communication Lab (LCCN) invites you to an exposure evening to communication networks - to get to know the laboratory activity, the research and the projects it offers and the team that leads them: - Prof. Danny Raz - Laboratory Head: The Net ...
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A q-Steiner System S_q(t,k,n) is set S of k-subspaces in a space of dimension n over a finite field, such that each t-subspace of the same space is contained in exactly one subspace from S. They have applications in random network Coding, but except for ...
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The Geometric Image Processing Laboratory (GIP) and the Center for Graphics and Geometric Computing (CGGC) invite you to a special event of exposure to their joint course with Intel and Rafael: Virtual and Augmented Reality. The event will be held on Wednesday, January 28, 2017, ...
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We study discrete-log algorithms that use preprocessing. In our model, an adversary may use a very large amount of precomputation to produce an "advice" string about a specific group (e.g., NIST P-256). In a subsequent online phase, the adversary's task is to use the preprocessed ...
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Cyber attacks on critical cyber systems are not decreasing in frequency or complexity. Aggressors choose the time and place of these engagements; protectors must identify, research and develop defensive techniques that provide an asymmetric advantage. A static, data-driven, preventative, automated defense is a losing strategy; ...
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On Tuesday, January 23, 2018, between 12:30-14:30, at the CS Taub Loby, the Systems and Software Development Laboratory (SSDL) will hold a project Fair on IoT and Android, presenting the newest and most inspiring projects presented by the developing teams. You are all invited! Details ...
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Expressive efficiency refers to the relation between two architectures A and B, whereby any function realized by B could be replicated by A, but there exists functions realized by A, which cannot be replicated by B unless its size grows significantly larger. For example, it ...
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Non-volatile memory is expected to coexist with (or even displace) volatile DRAM for main memory in upcoming architectures. This has led to increasing interest in the problem of designing and specifying durable data structures that can recover from system crashes. Data structures may be designed ...
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A private information retrieval (PIR) protocol allows a user to retrieve a data item from a database without revealing any information about the identity of the data item to a certain coalition of servers. In this talk, we will go over the recent results on ...
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We address the problem of constructing a minimum height decision tree of a class C in polynomial time. This problem has many interesting applications that include, to name a few, computer vision, group testing, exact learning from membership queries, and game theory. We further study ...
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The triangle removal lemma, proved by Ruzsa and Szemerédi in 1976, states that if a graph contains a small number of triangles then it can be made triangle-free by a small number of edge deletions. The triangle removal lemma found applications in several areas of ...
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The security of the Bitcoin system is based on having a large amount of computational power in the hands of honest miners. Such miners are incentivized to join the system and validate transactions by the payments issued by the protocol to anyone who creates blocks. ...
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The Technion's Entrepreneurship Center, and the Electrical Engineering and Computer Science Departments invite you to a guest lecture by Marius Nacht, one of the founders of Check Point and chairman of the company, who has been actively investing in biomed projects, including pharmaceuticals, medical devices ...
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Recommender systems are first and foremost about matching users with items the systems believe will delight them. The "main street" of personalization is thus about modeling users and items, and matching per user the items predicted to best satisfy the user. This holds for both ...
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The composition of the earth's atmosphere has a vital effect on life on earth. Accordingly, the task of monitoring its contents, i.e. aerosol and cloud concentrations, draws much interest in science and engineering. Currently, the methods employed in monitoring the atmosphere require expensive equipment, retrieve ...
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In unsupervised domain mapping, the learner is given two unmatched datasets A and B. The goal is to learn a mapping G_AB that translates a sample in A to the analog sample in B. Recent approaches have shown that when learning simultaneously both G_AB and ...
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Counting network flows’ statistics is at the heartof network monitoring, network security, and similar networkfunctionalities.Virtualization in datacenters as well as networkfunction virtualization (NFV) trends push traditional hardwareimplementations intovirtual switchesrunning as software onthe host’s CPU.The problem is that Bloom filter based datastructures for maintaining flows’ statistics ...
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You are invited to scholarship award ceremony for CS and EE excellent female students by Intel and DELL-EMC. The event will be held on Thursday, January 11, 2018, in room 337 (3rd floor) of CS Taub Building at the Technion. More details and program in ...
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Web extraction is an important research topic that has been studied extensively, receiving a lot of attention and focus. Large amounts of data are produced and consumed online in a continuous and growing rate. The ability to collect and analyze these data has become essential ...
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In this work we consider the problem of testing whether a graph has bounded arboricity. The family of graphs with bounded arboricity includes, among others, bounded-degree graphs, all minor-closed graph classes (e.g. planar graphs, graphs with bounded treewidth) and randomly generated preferential attachment graphs. Graphs ...
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Caching is the most effective practice for reducing delays and congestion in networks aimed at content distribution. In this work we address the setup of multiple Internet service providers (ISPs) sharing a federated cache. When multiple ISPs with different demands share a cache, storage cost ...
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In recent years, robots have played an active role in everyday life: medical robots assist in complex surgeries, low-cost commercial robots clean houses and fleets of robots are used to efficiently manage warehouses. A key challenge in these systems is motion planning, where we are ...
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Increasingly adopted Web-based knowledge sources, such as knowledge graphs and crowdsourcing platforms, pose a great challenge in making them accessible to non-expert end-users. In particular, being unaware of the properties, structure and contents of available knowledge sources, end-users may not know which sources to use ...
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In several clinical routines such as mammography, the early detection of breast cancer has an enormous impact in the patient survival. Radiologists nowadays are overwhelmed by the imaging data coming from numerous screening and diagnostic tools. This puts pressure on the early detection of breast ...
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Computational problems whose input is a program are central in Cryptography, as well as Complexity, Learning, and Optimization. The nature of such problems crucially depends on the way the program is accessed -- as a black box or explicitly by its implementation. In which settings ...
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In the previous research, people tend to optimize the sensing matrix to improve the signal reconstruction accuracy for compressive sensing (CS) system. However, they assume the signal is exactly sparse which is not true in practice. So we try to find a way to design ...
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Yahoo will hold the annual event at Technion CS on Monday, January 8, 2018, 12:00-14:00, in room 337 (3rd floor) of the CS Taub Building The program includes Research Talk, Round Tables, Delightful Snacks and Surprises. Full program and more details in the attached ad. ...
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Selective classification techniques (also known as reject option) have not yet been considered in the context of deep neural networks (DNNs). These techniques can potentially significantly improve DNNs prediction performance by trading-off coverage. We propose a method to construct a selective classifier given a trained ...
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We address the problem of extracting an automaton from a trained recurrent neural network (RNN). We present a novel algorithm that uses exact learning and abstract interpretation to perform efficient extraction of a minimal automaton describing the state dynamics of a given RNN. We use ...
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Hardware and operating system interfaces should ideally enable to build performant systems that are also robust and secure. Alas, these goals frequently conflict, necessitating unavoidable compromises that promote one goal at the expense of another. I nevertheless contend that existing compromises---while inherently imperfect---are often suboptimal, ...
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You are invited  to the first of series of meetings of technical workshop on various topics, on Wednesday, January 3rd, 2018, ate 18:30. The first lecture will be given by Maya Anderson from IBM Research on: How to Stop Fearing Code Changes: Version Management with ...
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We are happy to invite your to the third of series of meetings on career and job seeking which will be held at CS, on Wednesay, January 3rd, at 15:00, in room 337, CS Taub Building. In the program: 15:00 - Prof. Irad Yavneh: Opening ...
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We consider graph coloring and related problems in the distributed message-passing model. **Locally-iterative** algorithms are especially important in this setting. These are algorithms in which each vertex decides about its next color only as a function of the current colors in its 1-hop neighborhood. In ...
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In recent years, applications increasingly adopt security primitives designed from the start with built-in side channel protection. A concrete example is Curve25519, which has been recently standardized in RFC-7748. Dealing away with obvious leakage sources such as key-dependent branches and memory accesses, RFC-7748 dictates that ...
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We introduce two new cryptographic notions in the realm of public and symmetric key encryption. * Encryption with invisible edits is an encryption scheme with two tiers of users: “privileged” and “unprivileged”. Privileged users know a key pair (pk,sk) and “unprivileged” users know a key ...
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It is well known that certain classes of signals can be effectively represented using a wavelet basis or a wavelet frame, keeping only a sparse number of coefficients. For example, Shearlet (discrete) frames are optimally sparse for cartoon like images. In this talk I will ...
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Computer Aided Geometric Design concerns development of algorithms and accompanying software, towards design of parts and structures with a high degree of numerical precision. Target application domains include design of automobiles, aircrafts and buildings, among others. In this talk we discuss two kernel level modeling ...
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