Search results
Results from the WOW.Com Content Network
A concurrent hash table or concurrent hash map is an implementation of hash tables allowing concurrent access by multiple threads using a hash function. [1] [2] Concurrent hash tables represent a key concurrent data structure for use in concurrent computing which allow multiple threads to more efficiently cooperate for a computation among ...
In computing, a hash table is a data structure that implements an associative array, also called a dictionary or simply map; an associative array is an abstract data type that maps keys to values. [2] A hash table uses a hash function to compute an index, also called a hash code, into an array of buckets or slots, from which the desired value ...
Extendible hashing is a type of hash system which treats a hash as a bit string and uses a trie for bucket lookup. [1] Because of the hierarchical nature of the system, re-hashing is an incremental operation (done one bucket at a time, as needed).
A HAMT is an array mapped trie where the keys are first hashed to ensure an even distribution of keys and a constant key length. In a typical implementation of HAMT's array mapped trie, each node contains a table with some fixed number N of slots with each slot containing either a nil pointer or a pointer to another node. N is commonly 32.
For example, key k could be the node ID and associated data could describe how to contact this node. This allows publication-of-presence information and often used in IM applications, etc. In the simplest case, ID is just a random number that is directly used as key k (so in a 160-bit DHT ID will be a 160-bit number, usually randomly chosen ...
There is no standard implementation of associative arrays in C, but a 3rd-party library, C Hash Table, with BSD license, is available. [1] Another 3rd-party library, uthash, also creates associative arrays from C structures. A structure represents a value, and one of the structure fields serves as the key. [2]
Linear probing is a component of open addressing schemes for using a hash table to solve the dictionary problem.In the dictionary problem, a data structure should maintain a collection of key–value pairs subject to operations that insert or delete pairs from the collection or that search for the value associated with a given key.
[1] [2] It has been analyzed by Baeza-Yates and Soza-Pollman. [3] It is the first in a number of schemes known as dynamic hashing [ 3 ] [ 4 ] such as Larson's Linear Hashing with Partial Extensions, [ 5 ] Linear Hashing with Priority Splitting, [ 6 ] Linear Hashing with Partial Expansions and Priority Splitting, [ 7 ] or Recursive Linear Hashing.