the main challenge of a search engine is ranking web documents to provide the best response to a user`s query. despite the huge number of the extracted results for user`s query, only a small number of the first results are examined by users; therefore, the insertion of the related results in the first ranks is of great importance. in this paper, a ranking algorithm based on the reinforcement le...

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objective: the present study aims to verify web preservation projects and programs in order to explore their preferred solutions in tackling the technical challenges.   method: a documentary method was used to identify and analyze web-preservation-related literature, including papers, handbooks, web sites and documents. the programs’ persons in charge were also questioned. besides, top web pres...