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  2. Key Word in Context - Wikipedia

    en.wikipedia.org/wiki/Key_Word_in_Context

    A KWIC index is a special case of a permuted index. [4] This term refers to the fact that it indexes all cyclic permutations of the headings. Books composed of many short sections with their own descriptive headings, most notably collections of manual pages, often ended with a permuted index section, allowing the reader to easily find a section by any word from its heading.

  3. Keyword clustering - Wikipedia

    en.wikipedia.org/wiki/Keyword_clustering

    A keyword clustering tool scans the list of keywords and then picks the most popular keyword. The most popular keyword is a keyword with the highest search volume.Then a tool compares the TOP 10 search result listings that showed up for the taken keyword to the TOP10 search results that showed up for another keyword to detect the number of matching URLs.

  4. Keyword research - Wikipedia

    en.wikipedia.org/wiki/Keyword_research

    Keyword research is a practice search engine optimization (SEO) professionals use to find and analyze search terms that users enter into search engines when looking ...

  5. Keyword (linguistics) - Wikipedia

    en.wikipedia.org/wiki/Keyword_(linguistics)

    In corpus linguistics a key word is a word which occurs in a text more often than we would expect to occur by chance alone. [1] Key words are calculated by carrying out a statistical test (e.g., loglinear or chi-squared) which compares the word frequencies in a text against their expected frequencies derived in a much larger corpus, which acts as a reference for general language use.

  6. Keyword density - Wikipedia

    en.wikipedia.org/wiki/Keyword_density

    Keyword density is the percentage of times a keyword or phrase appears on a web page compared to the total number of words on the page. In the context of search engine optimization , keyword density can be used to determine whether a web page is relevant to a specified keyword or keyword phrase.

  7. Lexical analysis - Wikipedia

    en.wikipedia.org/wiki/Lexical_analysis

    The most established is lex, paired with the yacc parser generator, or rather some of their many reimplementations, like flex (often paired with GNU Bison). These generators are a form of domain-specific language , taking in a lexical specification – generally regular expressions with some markup – and emitting a lexer.