relevance

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Related to relevancy: pertinence

relevance

(information science)
A measure of how closely a given object (file, web page, database record, etc.) matches a user's search for information.

The relevance algorithms used in most large web search engines today are based on fairly simple word-occurence measurement: if the word "daffodil" occurs on a given page, then that page is considered relevant to a query on the word "daffodil"; and its relevance is quantised as a factor of the number of times the word occurs in the page, on whether "daffodil" occurs in title of the page or in its META keywords, in the first N words of the page, in a heading, and so on; and similarly for words that a stemmer says are based on "daffodil".

More elaborate (and resource-expensive) relevance algorithms may involve thesaurus (or synonym ring) lookup; e.g. it might rank a document about narcissuses (but which may not mention the word "daffodil" anywhere) as relevant to a query on "daffodil", since narcissuses and daffodils are basically the same thing. Ditto for queries on "jail" and "gaol", etc.

More elaborate forms of thesaurus lookup may involve multilingual thesauri (e.g. knowing that documents in Japanese which mention the Japanese word for "narcissus" are relevant to your search on "narcissus"), or may involve thesauri (often auto-generated) based not on equivalence of meaning, but on word-proximity, such that "bulb" or "bloom" may be in the thesaurus entry for "daffodil".

Word spamming essentially attempts to falsely increase a web page's relevance to certain common searches.

See also subject index.
References in periodicals archive ?
The factor scores of usefulness of research (Mdn = 5.56) was significantly higher than the factor scores of the other factors: research anxiety (Mdn = 4.38), z = -4.302, p <.0001; research difficulty (Mdn = 4.33), z = -3.774, p <.0001; life relevancy of research (Mdn = 4.25), z = -4.410, p < 0.0001; and attitude toward research (Mdn = 4.63), z = -4.655, p <.0001.
The insurer landed in the top spot based on criteria including strong reputation, relevancy, expressiveness (brand strength, informativeness, relevancy), products and services, governance, citizenship and innovation.
The knee injury was the only thing that could stop Cansino, who was a major reason for the Growling Tigers' return to relevancy after coming off a horrible year where they finished with a 1-13 record.
After retweeting a suggestion that someone tag themself "I'm maggie," Grande replied "thank u, next" and then, "For somebody who claims to hate relevancy u sure love clinging to it huh." She later deleted the tweets.
According to the application, the court in its July 6 verdict 'has given its findings in respect of (i) status and relevancy of the JIT [joint investigation team] report, (ii) pleading of the co-accused...
(9) For instance, given a surface form with multiple senses, we select the one with the highest Google Search ranking (by relevancy).
Before, Google was much worse at detecting manipulative links, and relevancy was not a priority criterion for ranking in search results.
Napa, CA, July 07, 2016 --(PR.com)-- VeraCentra, a leading customer relationship agency, published the findings of a recent study: "Fulfilling the Relevancy Promise: How People, Process and Technology Strategies Impact Customer Loyalty." The May 2016 commissioned study, conducted by Forrester Consulting on behalf of VeraCentra, was designed to better understand how consumer brand marketers are investing in new and different strategies to engage today's customers with greater relevancy and ultimately win their loyalty.
Based on these common words, the link content and the page content are checked for relevancy. If the weight is more for these common words, then that particular page is considered as a relevant page.
Relevancy tuning helps users zero in on the content they want.
Searching through large amounts of data 39% Identifying/accessing data sources for collection 35% Developing search criteria for determining document relevancy 15% Using In-house e-discovery search/collection 8% software effectively Working with third-party collection/processing providers 3% Source: Exterro Note: Table made from bar graph.