Hilltop algorithm

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The Hilltop algorithm is a patented algorithm created by Krishna Bharath and George A. Mihaila of the University of Toronto. The algorithm is used to find topic relevant documents to the particular keyword topic.

The algorithm operates on a special index of expert documents. These are pages that are about a specific topic and have links to many non-affiliated pages on that topic. Pages are defined as non-affiliated if they are authored by authors from non-affiliated organizations. Results are ranked based on the match between the query and relevant descriptive text for hyperlinks on expert pages pointing to a given result page. Websites which have backlinks from many of the best expert pages are authorities and are rank well.

Google acquired the algorithm in February, 2003.

[edit] See also

• PageRank
• TrustRank
• HITS algorithm

[edit] External links

• Hilltop: A Search Engine based on Expert Documents by K. Bharath and G.A. Mihaila
• The Hilltop algorithm