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Excerpt: Introduction The PageRank algorithm is a global ranking metric used to determine the overall quality of a page. The Hilltop algorithm determines the quality of a result based on the relevance to the query term. The original paper is available. The algorithm overcomes problems with broad search terms which return large sets of documents that have to be ranked by checking them against expert sites are derived from the terms in the query. An expert site is be one which has many one-way links to other expert sites. Affiliated sites are discounted. (Sites are deemed affiliated if they share the…