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  2. Wikipedia : United States government document search tools

    en.wikipedia.org/wiki/Wikipedia:United_States...

    Wikipedia Editors should be aware that as part of the current policy of open access and freedom of information in the United States of America there are a variety of search engines available on the internet to help people to find online government documents and related reference information that can be used as sources for Wikipedia articles.

  3. Information retrieval - Wikipedia

    en.wikipedia.org/wiki/Information_retrieval

    Emanuel Goldberg submits patents for his "Statistical Machine", a document search engine that used photoelectric cells and pattern recognition to search the metadata on rolls of microfilmed documents. 1940s–1950s late 1940s: The US military confronted problems of indexing and retrieval of wartime scientific research documents captured from ...

  4. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    Indian Citation Index (ICI) is a home grown abstracts and citation database, with multidisciplinary objective knowledge contents from about 1000 top Indian scholarly journals. It provides powerful search engine to fulfill search and evaluation purposes for researchers, policy makers, decision makers etc. Subscription ICI [78] IARP ...

  5. AOL Search FAQs - AOL Help

    help.aol.com/articles/aol-search-faqs

    When seeking online information, many people turn to search engines like Google, Bing, Yahoo, or AOL Search. These search engines function as digital indexes, organizing available content by topic and sub-topic, much like an index in a book. Each search engine builds its index using distinct methods, typically beginning with an automated ...

  6. List of search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_search_engines

    Search engines, including web search engines, ... Semantic web documents Yebol: defunct Yummly: Semantic web search for food, cooking, and recipes: food related

  7. Contextual searching - Wikipedia

    en.wikipedia.org/wiki/Contextual_searching

    Contextual search is a form of optimizing web-based search results based on context provided by the user and the computer being used to enter the query. [1] Contextual search services differ from current search engines based on traditional information retrieval that return lists of documents based on their relevance to the query.

  8. Federated search - Wikipedia

    en.wikipedia.org/wiki/Federated_search

    Federating across three search engines. One application of federated searching is the metasearch engine. However, the metasearch approach does not overcome the shortcomings of the component search engines, such as incomplete indexes. Documents that are not indexed by search engines create what is known as the deep Web, or invisible Web.

  9. Search engine indexing - Wikipedia

    en.wikipedia.org/wiki/Search_engine_indexing

    Popular search engines focus on the full-text indexing of online, natural language documents. [1] Media types such as pictures, video, audio, [2] and graphics [3] are also searchable. Meta search engines reuse the indices of other services and do not store a local index whereas cache-based search engines permanently store the index along with ...