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information entropy

expected value of the amount of information delivered by a message
Thing mathematical_expression Q204570
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Summary

information entropy is a mathematical expression[1]. It ranks in the top 10% of mathematical expression entities by monthly Wikipedia readership (10,548 views/month).[2]

Key Facts

  • Discoverer or inventor: Claude Shannon[3]
  • Instance of: mathematical concept[4]
  • Subclass of: information content[5], physical quantity[6]
  • Commons category: Entropy and information[7]
  • Opposite of: negentropy[8]
  • Topic's main category: Category:Entropy and information[9]
  • Facet of: information[10]
  • Described by source: IEC 80000-13:2008 Quantities and units — Part 13: Information science and technology[11]
  • Main Wikidata property: P10746[12]
  • Different from: negentropy[13], data size[14]
  • Studied by: thermodynamics[15], information theory[16]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[17]
  • Maintained by WikiProject: WikiProject Mathematics[18]
  • Recommended unit of measurement: shannon[19], hartley[20], nat[21]

Why It Matters

information entropy has Wikipedia articles in 27 language editions, a strong signal of global cultural recognition.[22] It is known by 71 alternative names across languages and contexts.[23]

Related Entities

Claude Shannon information theory thermodynamics

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . IEC 80000-13:2008 Quantities and units — Part 13: Information science and technology. wikidata.org.
  18. [20] ↑ . IEC 80000-13:2008 Quantities and units — Part 13: Information science and technology. wikidata.org.
  19. [21] ↑ . IEC 80000-13:2008 Quantities and units — Part 13: Information science and technology. wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [22] ↑ . Wikidata sitelinks. wikidata.org.
  3. [23] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). information entropy. Retrieved October 14, 2026, from https://4ort.xyz/entity/information-entropy
MLA “information entropy.” 4ort.xyz Knowledge Graph, 4ort.xyz, 14 Oct. 2026, https://4ort.xyz/entity/information-entropy.
BibTeX @misc{4ortxyz_information-entropy_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{information entropy}}, year = {2026}, url = {https://4ort.xyz/entity/information-entropy}, note = {Accessed: 2026-10-14}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): information entropy — https://4ort.xyz/entity/information-entropy (retrieved 2026-10-14)

Canonical URL: https://4ort.xyz/entity/information-entropy · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 13w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 4JTDsM
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  2. 17w ago · MariuszRokin · 2026-06-12 view diff on Wikidata ↗
    Svkkl authority id → 0300972-informacni-entropie
    "/* wbcreateclaim-create:1| */ Svkkl authority id: 0300972-informacni-entropie, [[:toollabs:quickstatements/#/batch/259599|batch #259599]]"
  3. 20w ago · Twofivesixbot bot · 2026-05-24 view diff on Wikidata ↗
    Studied by → thermodynamics, information theory
    Recommended unit of measurement → shannon, hartley, nat
    Facet of → information
    Main wikidata property → P10746
    + 12 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|2 */ National library of israel j9u id: 987007550784405171, mv to monolingual text names on J9U statements"
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