26. The method of claim 1 , wherein the relevance model comprises a plurality of features including at least one document-specific feature and at least one query-specific feature.
26. The method of claim 1 , wherein the relevance model comprises a plurality of features including at least one document-specific feature and at least one query-specific feature. 27. The method of claim 26 , wherein the plurality of features comprises one of: frequency of a term within the document, frequency of a term in a hyperlink to the document, frequency of a term in a summary of the document, location of a term within the document, the structure of the document, the length of the document, the type of the document, the date of creation of the document, number of hyperlinks to the document, quality of hyperlinks to the document, terms with which the document has been tagged, or ratings for the document.