Encyclopedia > Extractor

  Article Content

Extractor

An (N,M,D,K,e)-Extractor is a bipartite graph with N nodes on the left and M nodes on the right such that each node on the left has D neighbors (on the right), which has the added property that for any subset A of N of size at least K, choosing a random node in A and then following a random edge brings you to a node x on the right side with probability within e of the uniform distribution.

These graphs are called "extractors" because they can be used to "extract" randomness from weak random sources.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Adios

... 1965, Adios had sired 589 offspring. His name is synonymous with horse racing and can be found on consumer products and harness horse equipment. At his passing, the horse ...