Using a weighted tree to determine document relevance

Details Using a weighted tree to determine document relevance Using a weighted tree to determine document relevance

2011-06-14

2011-06-14

Trujillo, James (Department: 2159)

Data processing: database and file management or data structures

Database and file access

Post processing of search results

C707S730000, C707S750000, C707S803000, C707S804000

Reexamination Certificate

active

07962480

ABSTRACT:
The relevance of documents is automatically determined based upon a weighted tree. Terms considered to be relevant are assigned to the leaf nodes of a tree data structure. A location can also be specified in a leaf node, indicating where in a document the term must appear to be considered relevant. Internal nodes of the tree are assigned operators (e.g., add, maximum or minimum). The connections between nodes are assigned weights. A relevance value for a given document is calculated as a function of occurrence in the document of terms assigned to leaves, operators assigned to internal nodes, and weights assigned to the associated node connections. Weighted trees can be used to process search queries. Documents with high relevance scores calculated against the tree can be returned to a user as the results to a query.

REFERENCES:
patent: 5873081 (1999-02-01), Harel
patent: 7596581 (2009-09-01), Frank et al.
patent: 2009/0319565 (2009-12-01), Greenwald et al.

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