Method of generating a distributed text index for parallel...

Details Method of generating a distributed text index for parallel... Method of generating a distributed text index for parallel...

2008-01-29

2008-01-29

Wong, Don (Department: 2163)

Data processing: database and file management or data structures

Database design

Data structure types

Reexamination Certificate

active

07324988

ABSTRACT:
The present invention relates to a method of generating a distributed text index for parallel query processing by a number of nodes. A set of node indices is generated for text indexing a set of documents, each node text index covering a subset of the documents. For each node text index, a local frequency measure for each term of the node text index is calculated on the basis of a frequency of documents containing the term in the subset of the documents of the node. A global frequency measure for each term is calculated on the basis of a frequency of documents containing the term in the set of documents. A quality measure for each node text index is calculated on the basis of the local frequency measures of the terms of the node and the global frequency measure of the terms of the node.

REFERENCES:
patent: 2004/0002973 (2004-01-01), Chaudhuri et al.
patent: 2004/0172378 (2004-09-01), Shanahan et al.
patent: 2004/0199419 (2004-10-01), Kim et al.

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