RETRIEVAL AND RANKING OF ITEMS UTILIZING SIMILARITY
First Claim
1. A system for ordering items, comprising:
- a search component that obtains an original ranking of at least a subset of a plurality of items;
a similarity model component that utilizes a Markov Random Field as a representation of relationships among the plurality of items; and
a rank adjustment component that generates an adjusted ranking of at least the subset as a function of the original ranking and the representation.
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Abstract
The subject disclosure pertains to systems and methods for facilitating item retrieval and/or ranking. An original ranking of items can be modified and enhanced utilizing a Markov Random Field (MRF) approach based upon item similarity. Item similarity can be measured utilizing a variety of methods. An MRF similarity model can be generated by measuring of similarity between items. An original ranking of items can be obtained, where each document is evaluated independently based upon a query. For example, the original ranking can be obtained using a keyword search. The original ranking can be enhanced based upon similarity of items. For example, items that are deemed to be similar should have similar rankings. The MRF model can be used in conjunction with original rankings to adjust rankings to reflect item relationships.
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Citations
20 Claims
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1. A system for ordering items, comprising:
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a search component that obtains an original ranking of at least a subset of a plurality of items; a similarity model component that utilizes a Markov Random Field as a representation of relationships among the plurality of items; and a rank adjustment component that generates an adjusted ranking of at least the subset as a function of the original ranking and the representation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of facilitating item retrieval from a set of items, comprising:
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obtaining initial search results of at least for the set of items; and updating the initial search results as a function of a Markov Random Field modeling similarity of items within the set. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A system for ordering a set of items, comprising:
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means for receiving an initial ordering of at least a subset of the items; and means for modifying the initial ordering based at least in part upon a Markov Random Field model of item similarity based at least in part upon text of the items. - View Dependent Claims (20)
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Specification