The Lenna (or Lena) picture is one of the most widely used standard test images used for compression algorithms.'lena' or 'lenna' is a digitized Playboy centerfold, from November 1972. (Lenna is the spelling in Playboy, Lena is the Swedish spelling of the name.) Lena Soderberg (ne Sjööblom)
simple extension to email that lets you append your entire address book to outgoing mail message without compromising your privacy. Correspondents can use this information to prioritize their mail, and learn more about their social networks.
Li Fan, Pei Cao and Jussara Almeida & Andrei Z. Broder - this new protocol, each proxy keeps a summary of the cache directory of each participating proxy, and checks these summaries for potential hits before sending any queries.
a client-side implementation of the rsync algorithm. It allows updating of files from a remote Web server without requiring a full download or a special remote server application.
Two new (in the sense that, as far as I know, they were never before programmed for a computer) algorithms for the classical Tower of Hanoi problem and their variations are discussed.
a software framework that allows for advanced sequence and protocol stream analysis by utilizing bioinformatics algorithms. The sole purpose of this software is to identify protocol fields in unknown or poorly documented network protocol formats.
a set of C++ genetic algorithm objects. The library includes tools for using genetic algorithms to do optimization in any C++ program using any representation and genetic operators. Part seems to be GPL (drats)
a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography
"To the first person to inform me of a legitimate bug in the code, I'll pay a bounty of US$10 (by check or Paypal). If directed to a charity, I'll pay US$20."
a freely available commonsense knowledgebase and natural-language-processing toolkit which supports many practical textual-reasoning tasks over real-world documents right out-of-the-box (without additional statistical training)
The numbers that control your life. You're identified by dozens of numbers. Your phone number, your driver's license number, your social security number, your zip code, your license plate, your credit card numbers. I find these numbers fascinating. Who distributes them? What can they be used for? How can you use them? How are they issued?
In k-means clustering we are given a set of n data points in d-dimensional space and an integer k, and the problem is to determine a set of k points in d-space, called centers, so as to minimize the mean squared distance from each data point to its neares
contest offers a cash prize for the winning entry. In the past it has ranged from a low of $100 to a high of $500. Cash prizes for second place are usually awarded as well.
an effort to develop parallel solver algorithms and libraries within an object-oriented software framework for the solution of large-scale, complex multi-physics engineering and scientific applications. A unique design feature of Trilinos is its focus on
Anat Levin, Dani Lischinski, Yair Weiss - a computer-assisted process of adding color to a monochrome image or movie with a relatively modest amount of user input.
a free (under GNU Lesser GPL) library which provides a uniform interface to a large number of hash algorithms. These algorithms can be used to compute checksums, message digests, and other signatures.
an edited reprint of the paper What Every Computer Scientist Should Know About Floating-Point Arithmetic, by David Goldberg, published in the March, 1991 issue of Computing Surveys. Copyright 1991