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Access to digital data through web servers and databases is facilitated by search tools. Following a user query, the search engine has a long list of bibliographic references and web pages. The efficient selection of relevant documents is very difficult given the low accuracy in the list. Typically, the user visits the first page referenced in the list, but it does not consult the fiftieth. In this article, we describe the problem of the queries language when we look for information in an automatic system (search ...

With the increased production of data related to the web and library collections, database growth continues to grow. This scalable web has generated derived information from social networks. Indeed, information (true and/or false) comes from social media (Twitter, Facebook, Blogs, etc.), and that appear in the results of the search engines. All these productions generate problems of documentary noise linked to the increasing number of multilingual resources on the Internet. The search for information in several la...