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Topic: Perfect hashing


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  Hash function - Wikipedia, the free encyclopedia
The generally impossible/impractical ideal for a hash table's hash function is to map each key to a unique index (see perfect hashing), because this guarantees access to each data record in the first probe into the table.
Hash functions that are truly random with uniform output (including most cryptographic hash functions) are good in that, on average, only one or two probes will be needed (depending on the load factor).
The hash function is computed for the data at the sender, and the value of this hash is sent with the data.
en.wikipedia.org /wiki/Hash_function   (1355 words)

  
 hash algorithm   (Site not responding. Last check: 2007-10-31)
A hash function (or hash algorithm) is a way of creating a small digital "fingerprint" from any kind...
In cryptography, a cryptographic hash function is a hash function with certain additional security properties to...
The perfect hash algorithm I use isn't a Pearson hash.
www.linkfinding.com /l/hash+algorithm.html   (628 words)

  
 Bob Jenkins' Web Site
There's no way to save a pattern once you've rearranged the tiles though.
hash function for hash table lookup, a FAQ, some
Have the cryptographic pseudorandom number generator ISAAC, a prize for breaking ISAAC, and ISAAC's background and theory.
www.burtleburtle.net /bob   (273 words)

  
 Searching Algorithms
One of the most effective representations is a hash table.
Typically, a simple function is applied to the key to determine its place in the dictionary.
A Program That Performs Minimal Perfect Hashing Whatever THAT Is
www.softpanorama.org /Algorithms/searching.shtml   (1919 words)

  
 New and/or Improved Entries
Amira, for producing visualizations of 3-D scalar and vector fields
fsa/utr, finite state utilities for spellchecking, diacritic restoration, morphological analysis and synthesis, and perfect hashing
mhash, a C interface for several hash algorithms
stommel.tamu.edu /~baum/linuxlist/linuxlist/node3.html   (9719 words)

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