Keyword (library and information sciences)
See also: Key word
A keyword (or key word , key word or keyword ) indicates, in the vocabulary of the Documentaliste S, a catchword of a topic treated by a Document. A list of key words thus makes it possible to define the sets of themes represented in a document.
Within the framework of research tools of information, one frequently assimilates the research topics with key words: it is actually an abuse language, except if the research tools of information contain a Thesaurus in which the research topics potentially entered by the users are connected to the key words actually used for to index the documents.
Research by keyword or label is one of the florets of the Web 2.0. The concept of Folksonomie in great part being managed by the use of key words.
Key word (research Internet)
In a research Internet, a keyword is a relevant term used to find the corresponding Web pages. The term was popularized at the beginnings of the development of the Search engines Internet: It was impossible to raise questions in natural language to find the pages adapted, but research gave the best results if research related to some selected key words. These " words clés" reflected the gasoline of the required topic; they were likely to be present on all the referred sites by the search engine.
The key words are always used today. Many modern search engines have methods (based on secret algorithms of research held) to determine which words in a research field are important and must be treated. The common words such as the articles (has, one, it) and the conjunctions (and, or, but) are not treated as key words because it would be ineffective to proceed thus. Almost each page in French language on Internet contains the article " le" , there is thus no direction to seek it.
- the index of density of the key words and Google
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