Colloquia and Seminars

To join the email distribution list of the cs colloquia, please visit the list subscription page.

Upcoming Colloquia & Seminars

  • Pixel Club: From Pixels to Brain Networks: Modeling Brain Connectivity and Its Changes in Disease

    Speaker:
    Polina Golland (CSAIL MIT)
    Date:
    Monday, 15.2.2016, 11:30
    Place:
    Taub 201

    We propose a novel probabilistic framework to model connectivity patterns in the brain as a latent network graph. In particular, we model the interaction between latent anatomical and functional connectivity and present an intuitive extension to population studies. The method simultaneously infers the templates of latent connectivity for each population and the differences in connectivity between the groups. We also develop an approach to identify foci of a neurological disorder based on anatomical and functional connectivity information. Specifically, we formulate a generative model that characterizes the network of abnormal functional connectivity emanating from the affected nodes. We demonstrate our methods on a schizophrenia study. Our model identifies significant increases in functional connectivity between the parietal/posterior cingulate region and the frontal lobe and reduced functional connectivity between the parietal/posterior cingulate region and the temporal lobe in schizophrenia.

    Joint work with Archana Venkataraman, Marek Kubicki, Carl-Fredrik Westin.

  • CGGC Mini-Symposium: Efficient Voronoi Diagram Construction for Planar Freeform Spiral Curves

    Date:
    Monday, 22.2.2016, 10:00
    Place:
    Room 337-8 Taub Bld.

    Time: 10:00-10:45
    Speaker: Prof Myung Soo Kim (Computer Science and Engineering Department, Seoul National University, Korea)
    Title: Efficient Voronoi Diagram Construction for Planar Freeform Spiral Curves


    Abstract:
    We present a real-time algorithm for computing the Voronoi diagram of planar freeform piecewise-spiral curves. The efficiency and robustness of our algorithm is based on a simple topological structure of Voronoi cells for spirals. Using a Möbius transformation, we provide an efficient search for maximal disks. The correct topology of Voronoi diagram is computed by sampling maximal disks systematically, which entails subdividing spirals until each belongs to a pair/triple of spirals under a certain matching condition. The matching pairs and triples serve as the basic building blocks for bisectors and bifurcations, and their connectivity implies the Voronoi structure. We demonstrate a real-time performance of our algorithm using experimental results including the medial axis computation for planar regions under deformation with non-trivial self-intersections and the Voronoi diagram construction for disconnected planar freeform curves.

    This is a joint work with Jaewook Lee, Yong-Jun Kim, and Gershon Elber.

    Time: 10:45-11:15
    Speaker: Dr. Jinesh Machchhar (Computer Science, Technion)
    Title: Revisiting the Problem of Zeros of Univariate Scalar Beziers


    Abstract:
    This work proposes a fast algorithm for computing the real roots of univariate polynomials given in the Bernstein basis. Traditionally, the polynomial is subdivided until a root can be isolated. In contrast, herein we aim to find a root only to subdivide the polynomial at the root. This subdivision based algorithm exploits the property that the Bezier curves interpolate the end-points of their control polygons. Upon subdivision at the root, both resulting curves contain the root at one of their end-points, and hence contain a vanishing coefficient that is factored out. The algorithm then recurses on the new sub-curves, now of lower degree, yielding a computational efficiency. In addition, the proposed algorithm has the ability to efficiently count the multiplicities of the roots. Comparison of running times against the state-of-the-art on thousands of polynomials shows an improvement of about an order-of-magnitude.

    This is a joint work with Gershon Elber.

    Time: 11:15-11:30: Break

    Time: 11:30-12:15
    Speaker: Mathias Höbinger (Evolute GmbH)
    Title: Getting mixed-integer parametrization to the end user: a progress report


    Abstract:
    In recent years scientific results on parametrization and remeshing have evolved quickly, with new and improved techniques being presented every couple of months. This talk will present an overview of the speaker’s work on taking a tool based on mixed-integer quadrangulation from a scientific project to a product ready for use by designers and other end-users - and the constant struggle between being outdated from day one and never finishing at all.

  • Intel@Technion Lectures: High speed I/O ports for Client Compute devices

    Speaker:
    Shahaf Kieselstein (Intel)
    Date:
    Wednesday, 23.3.2016, 11:30
    Place:
    TBD

    The high speed I/O market in client platforms is going through major changes in the last few years, with latest silicon process that enable high bit rate on the wire while using low power to drive those bits. Where are those trends leading ? what is the impact on the user ? In this lecture we will review the changes in the USB & Thunderbolt technologies over the last few years, and will look forward to estimate where we think the latest developments will land, and what new use cases will be possible as a result of it.

    Short bio:
    Shahaf Kieselstein, Vice President in the Client Computing Group and General Manager of the Client Connectivity Division at Intel Corporation. Responsible for Thunderbolt technology product lines and Go to Markets activities

  • Your phone can and should do all the image/video processing and machine learning you need: Child Development Screening for Everybody

    Speaker:
    Prof. Guillermo Sapiro - DISTINGUISHED POLLAK LECTURE SERIES
    Date:
    Monday, 28.3.2016, 14:30
    Place:
    Room 337-8 Taub Bld.
    Link:
    http://www.cs.technion.ac.il/~colloq/20160328_14_30_Sapiro.html
  • Your phone can and should do all the image/video processing and machine learning you need: Video Enhancement and Face Recognition

    Speaker:
    Prof. Guillermo Sapiro - DISTINGUISHED POLLAK LECTURE SERIES
    Date:
    Wednesday, 30.3.2016, 14:30
    Place:
    Room 337-8 Taub Bld.
    Link:
    http://www.cs.technion.ac.il/~colloq/20160330_14_30_Sapiro.html
  • Intel@Technion Lectures: Game Changing Design

    Speaker:
    Shlomit Weiss (Intel)
    Date:
    Wednesday, 6.4.2016, 11:30
    Place:
    TBD

    produce design developed in through the years in many fronts and requirements. Today SOC products require aggressive targets in all fronts: frequency, performance, low cost, low power…… To address those new and growing requirement there needs to be a basic change in the design concept and solutions. Working in parallel convergence, parallel fronts and analyze tradeoffs together is the approach used to being the best SOC products to the market. This talk is describing the challenge and principals in applying the new approach.

    Short bio:
    Shlomit Weiss, VP Data Center Group – General Manager Silicon Development Networking Group, Intel. In her previous role Shlomit was GM of Client Products Development responsible design of all Client SOC products. In her role managed a cross site organization of about 650 people. Between the products designed and developed in the organization 6th generation “Core names Best processor Ever”. She is based in Intel Israel, has been at Intel since 1989, with a third of her time in different positions in the US. In her career at Intel Weiss has worked in various projects starting in validation, design, cluster manager, and architecture. Previously Weiss managed the architecture of the Intel® Core™ 2 Duo processor definition receiving an Intel Achievement Award, one of most prestigious Intel awards, for the architecture of that CPU. Weiss earned her master's degree cum laude in computer engineering from Technion in Haifa, Israel. In her limited free time, Shlomit enjoys traveling, folk dancing and spending time with her family.

  • Applying theory to practice (and practice to theory)

    Speaker:
    Ronald Fagin - TCE Henry Taub Distinguished Visitor
    Date:
    Tuesday, 19.4.2016, 14:30
    Place:
    Room Auditorium 2 Taub Bld.
    Link:
    http://www.cs.technion.ac.il/~colloq/20160419_14_30_Fagin.html