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.
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.
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
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.