Binary independence model
Open-knowledge reference entry
In computing and information science, the binary independence model (BIM) is a probabilistic information retrieval technique. The model makes some simple assumptions to make the estimation of document/query similarity probable and feasible.
Definitions
The binary independence assumption states that documents are binary vectors; that is, only the presence or absence of terms in documents is recorded. Terms are independently distributed in the set of relevant documents and they are also independently distributed in the set of irrelevant documents.
The representation is an ordered set of Boolean variables. That is, the representation of a document or query is a vector with one Boolean element for each term under consideration. More specifically, a document is represented by a vector d = (x1, ..., xm) where xt=1 if term t is present in the document d and xt=0 if it's not. Many documents can have the same vector representation with this simplification. Queries are represented in a similar way.
"Independence" signifies that terms in the document are considered independently from each other and no association between terms is modeled.
“Binary independence model” enters the record as open-knowledge reference entry. Crown Archives preserves that source wording while asking what Binary, independence and model can confirm, complicate or overturn.
Why this record matters
“Binary independence model” is worth following because a concise public description often conceals a longer documentary argument. Here, Binary, independence and model provides the most credible route into that argument.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Dec 18, 2025. The linked authority identifier is Q3531721. None of the 0 selected statements returned an explicit reference.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
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The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
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- Expand the search: follow Binary independence model primary sources, Binary independence model archive and Binary research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
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This entry incorporates text from “Binary independence model” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.