Rehashing: meaning, definitions and examples

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rehashing

 

[ riหˆhรฆสƒษชล‹ ]

Noun / Verb
Context #1 | Noun

computer science

Rehashing is a process used in data structures, particularly in hash tables, to resolve collisions by creating a new hash function or adjusting the existing one. It typically occurs when the number of entries exceeds a certain threshold, prompting the table to expand and re-evaluate the position of existing entries based on the new function or table size.

Synonyms

rehash, rehashing function, transforming

Examples of usage

  • Rehashing improved the efficiency of our hash table.
  • After rehashing, the search times decreased significantly.
  • The algorithm supports automatic rehashing for smoother performance.
Context #2 | Verb

data structures

To rehash means to apply a new hash function to the existing data in a hash table to improve its distribution. This operation is essential when dealing with increasing data loads to minimize collisions and enhance retrieval speed.

Synonyms

recalculate, recompute, transform

Examples of usage

  • We need to rehash the data to accommodate more entries.
  • Rehashing the database helped organize the records better.
  • It is crucial to rehash after expanding the hash table.

Translations

Translations of the word "rehashing" in other languages:

๐Ÿ‡ต๐Ÿ‡น rehashing

๐Ÿ‡ฎ๐Ÿ‡ณ เคชเฅเคจเคƒ เคนเฅˆเคถเคฟเค‚เค—

๐Ÿ‡ฉ๐Ÿ‡ช Rehashing

๐Ÿ‡ฎ๐Ÿ‡ฉ rehashing

๐Ÿ‡บ๐Ÿ‡ฆ ะฟะตั€ะตั…ะตัˆัƒะฒะฐะฝะฝั

๐Ÿ‡ต๐Ÿ‡ฑ rehashing

๐Ÿ‡ฏ๐Ÿ‡ต ใƒชใƒใƒƒใ‚ทใƒณใ‚ฐ

๐Ÿ‡ซ๐Ÿ‡ท rehashing

๐Ÿ‡ช๐Ÿ‡ธ rehashing

๐Ÿ‡น๐Ÿ‡ท rehashing

๐Ÿ‡ฐ๐Ÿ‡ท ๋ฆฌํ•ด์‹ฑ

๐Ÿ‡ธ๐Ÿ‡ฆ ุฅุนุงุฏุฉ ุงู„ุชุฌุฒุฆุฉ

๐Ÿ‡จ๐Ÿ‡ฟ rehashing

๐Ÿ‡ธ๐Ÿ‡ฐ rehashing

๐Ÿ‡จ๐Ÿ‡ณ ้‡ๆ–ฐๅ“ˆๅธŒ

๐Ÿ‡ธ๐Ÿ‡ฎ rehashing

๐Ÿ‡ฎ๐Ÿ‡ธ rehashing

๐Ÿ‡ฐ๐Ÿ‡ฟ า›ะฐะนั‚ะฐ ั…ะตัˆั‚ะตัƒ

๐Ÿ‡ฌ๐Ÿ‡ช แƒ แƒ”แƒฐแƒแƒจแƒ˜แƒœแƒ’แƒ˜

๐Ÿ‡ฆ๐Ÿ‡ฟ rehashing

๐Ÿ‡ฒ๐Ÿ‡ฝ rehashing

Word origin

The term 'rehashing' originated in computer science terminology during the late 20th century as part of the development of hash tables and data structures. The prefix 're-' indicates repetition, while 'hash' pertains to the hashing algorithms used to convert data into fixed-size values or keys. This process is essential for efficient data retrieval in computer systems. The concept has evolved as computing technology advanced, with modern implementations of hash tables often incorporating dynamic resizing and enhanced collision resolution techniques. The idea of rehashing reflects the growing need for adaptive methods to manage data integrity and speed amidst increasing informational loads in database systems. As programming languages and algorithms have expanded, so has the understanding and necessity of rehashing in ensuring optimal performance in various applications, from databases to caching mechanisms.