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  2. Ranking (information retrieval) - Wikipedia

    en.wikipedia.org/wiki/Ranking_(information...

    Ranking of query is one of the fundamental problems in information retrieval (IR), [1] the scientific/engineering discipline behind search engines. [2] Given a query q and a collection D of documents that match the query, the problem is to rank, that is, sort, the documents in D according to some criterion so that the "best" results appear early in the result list displayed to the user.

  3. Discounted cumulative gain - Wikipedia

    en.wikipedia.org/wiki/Discounted_cumulative_gain

    The nDCG values for all queries can be averaged to obtain a measure of the average performance of a search engine's ranking algorithm. Note that in a perfect ranking algorithm, the will be the same as the producing an nDCG of 1.0. All nDCG calculations are then relative values on the interval 0.0 to 1.0 and so are cross-query comparable.

  4. Indiana Code - Wikipedia

    en.wikipedia.org/wiki/Indiana_Code

    The Indiana Code in book form. The Indiana Code is the code of laws for the U.S. state of Indiana. The contents are the codification of all the laws currently in effect within Indiana. With roots going back to the Northwest Ordinance of 1787, the laws of Indiana have been revised many times.

  5. Evaluation measures (information retrieval) - Wikipedia

    en.wikipedia.org/wiki/Evaluation_measures...

    Evaluation of IR systems is central to the success of any search engine including internet search, website search, databases and library catalogues. Evaluations measures are used in studies of information behaviour, usability testing, business costs and efficiency assessments.

  6. PageRank - Wikipedia

    en.wikipedia.org/wiki/PageRank

    A search engine called "RankDex" from IDD Information Services, designed by Robin Li in 1996, developed a strategy for site-scoring and page-ranking. [15] Li referred to his search mechanism as "link analysis," which involved ranking the popularity of a web site based on how many other sites had linked to it. [16] RankDex, the first search ...

  7. Position paper - Wikipedia

    en.wikipedia.org/wiki/Position_paper

    A position paper (sometimes position piece for brief items) is an essay that presents an arguable opinion about an issue – typically that of the author or some specified entity. Position papers are published in academia, in politics, in law and other domains. The goal of a position paper is to convince the audience that the opinion presented ...

  8. TrustRank - Wikipedia

    en.wikipedia.org/wiki/TrustRank

    Today, this algorithm is a part of major web search engines like Yahoo! and Google. [2] One of the most important factors that help web search engine determine the quality of a web page when returning results are backlinks. Search engines take a number and quality of backlinks into consideration when assigning a place to a certain web page in ...

  9. Search engine optimization - Wikipedia

    en.wikipedia.org/wiki/Search_engine_optimization

    Search engine optimization (SEO) is the process of improving the quality and quantity of website traffic to a website or a web page from search engines. [ 1 ] [ 2 ] SEO targets unpaid search traffic (usually referred to as " organic " results) rather than direct traffic, referral traffic, social media traffic, or paid traffic .