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Abstract

Embodiments of methods and apparatuses for searching contents, including structured search for search expressions associated with documents, are described herein. Embodiments may use tree structures (or more generally, graph structures), layout structures, and/or other information to capture within search results relevant content, including sub-document constituents, and/or to improve the accuracy of rankings within search results, and/or to classify documents within hierarchies of documents, and/or to cluster documents. Embodiments may use distance and/or scoring functions to generate scores for the structures to indicate relevance, including usage of local geometry, and linear iteration over portions of the content at a level to capture potential of a portion to influence other portions of the level, and influence received by a portion from the other portions of the level, and influence received by a portion from lower levels. Other embodiments may be described and claimed.

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First Claim