Definitions for hash function
hash func·tion

WiktionaryRate this definition:0.0 / 0 votes

1. hash functionnoun

   an algorithm that generates a numeric, or fixed-size character output from a variable-sized piece of text or other data; used in database table queries, cryptography and in error-checking

WikipediaRate this definition:0.0 / 0 votes

1. Hash function

   A hash function is any function that can be used to map data of arbitrary size to fixed-size values, though there are some hash functions that support variable length output. The values returned by a hash function are called hash values, hash codes, digests, or simply hashes. The values are usually used to index a fixed-size table called a hash table. Use of a hash function to index a hash table is called hashing or scatter storage addressing. Hash functions and their associated hash tables are used in data storage and retrieval applications to access data in a small and nearly constant time per retrieval. They require an amount of storage space only fractionally greater than the total space required for the data or records themselves. Hashing is a computationally and storage space-efficient form of data access that avoids the non-constant access time of ordered and unordered lists and structured trees, and the often exponential storage requirements of direct access of state spaces of large or variable-length keys. Use of hash functions relies on statistical properties of key and function interaction: worst-case behaviour is intolerably bad with a vanishingly small probability, and average-case behaviour can be nearly optimal (minimal collision).Hash functions are related to (and often confused with) checksums, check digits, fingerprints, lossy compression, randomization functions, error-correcting codes, and ciphers. Although the concepts overlap to some extent, each one has its own uses and requirements and is designed and optimized differently. The hash function differs from these concepts mainly in terms of data integrity.

WikidataRate this definition:0.0 / 0 votes

1. Hash function

   A hash function is any algorithm or subroutine that maps data sets of variable length to data sets of a fixed length. For example, a person's name, having a variable length, could be hashed to a single integer of bounded size. The values returned by a hash function are called hash values, hash codes, hash sums, checksums or simply hashes.

How to pronounce hash function?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say hash function in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of hash function in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of hash function in Pythagorean Numerology is: 3

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Hash_Function
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Hash_Function
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=hash function