Technical Report CS0085

TR#:CS0085
Class:CS
Title: Interpolation Search - a Log Log N Search
Authors: Yehoshua Perl, Alon Itai and Haim Avni
PDFCS0085.pdf
Abstract: Interpolation search is a method of retrieving a desired record by key in an ordered file, using the value of the key and the statistical distribution of the keys. It is shown that log log N file accesses on the average are required to retrieve a key, assuming that the N keys are uniformly distributed. The number of extra accesses is also estimated and shown to be very low. The same holds if the cumulative distribution function of the keys is known. Computational experiments confirm these results.
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