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I'm going to add the beginning of another possible set of sources here, but I'd like to know if people think they sound right. The way the the described process basically looks for mix-and-match meaning that web pages have regions, a lot of the regions may be identical, but other regions are different, and then also that they may be somewhat rearranged on ...


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From Elin's comment of 1/14/2014: Information retrieval system and method that generates weighted comparison results to analyze the degree of dissimilarity between a reference corpus and a candidate document US 6167398 A ABSTRACT An internet information agent accepts a reference document, performs an analysis upon it in accordance with metrics defined ...


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This sounds the same as Netscape Navigator's "What's Related" feature. This may overlap with their "What's Cool" functionality too. Both of which were present in their Navigator product circa ~1995. Their may be others, but this is at least one patent tied to those features: "Shared document repository with coupled recommender system" US 6999962 B2 ...


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A Vector Space Model for Automatic Indexing (1975) by G. Salton, A. Wong, and C. S. Yang. The first two paragraphs (after the abstract) describe how to compute a similarity coefficient between two documents. The documents are associated with one or more index terms; a weight for each term may be computed according to its importance in the given document; ...


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