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In a well-dimensioned hash table, the average time complexity for each lookup is independent of the number of elements stored in the table. Many hash table designs also allow arbitrary insertions and deletions of key–value pairs, at amortized constant average cost per operation. [3] [4] [5] Hashing is an example of a space-time tradeoff.
In computer science, tabulation hashing is a method for constructing universal families of hash functions by combining table lookup with exclusive or operations. It was first studied in the form of Zobrist hashing for computer games; later work by Carter and Wegman extended this method to arbitrary fixed-length keys. Generalizations of ...
Robert John Jenkins Junior (born 1966 [1] in Akron, Ohio), also known as Bob Jenkins, is an American computer professional and author of several fast pseudorandom number generators such as ISAAC [2] [3] [4] and hash functions (Jenkins hash) [5] [6]
ISAAC, the International Symposium on Algorithms and Computation, is an academic conference in the field of theoretical computer science. ISAAC has been organized annually since 1990. The proceedings are published by Springer-Verlag in the LNCS series. [1]
In computer science, SUHA (Simple Uniform Hashing Assumption) is a basic assumption that facilitates the mathematical analysis of hash tables.The assumption states that a hypothetical hashing function will evenly distribute items into the slots of a hash table.
In computer science, a family of hash functions is said to be k-independent, k-wise independent or k-universal [1] if selecting a function at random from the family guarantees that the hash codes of any designated k keys are independent random variables (see precise mathematical definitions below). Such families allow good average case ...
hash HAS-160: 160 bits hash HAVAL: 128 to 256 bits hash JH: 224 to 512 bits hash LSH [19] 256 to 512 bits wide-pipe Merkle–Damgård construction: MD2: 128 bits hash MD4: 128 bits hash MD5: 128 bits Merkle–Damgård construction: MD6: up to 512 bits Merkle tree NLFSR (it is also a keyed hash function) RadioGatún: arbitrary ideal mangling ...
In computer science, hash trie can refer to: . Hash tree (persistent data structure), a trie used to map hash values to keys A space-efficient implementation of a sparse trie, in which the descendants of each node may be interleaved in memory; the name is suggested by a similarity to a closed hash table [1] [verification needed]