Method and system for indexing and searching...

Details Method and system for indexing and searching... Method and system for indexing and searching...

2008-04-22

2011-10-04

Trujillo, James (Department: 2159)

Data processing: database and file management or data structures

Database and file access

Preparing data for information retrieval

Reexamination Certificate

active

08032534

ABSTRACT:
Provided are a content-based searching method and system for multimedia objects using a high-dimensional feature vector data based on a 2-level signature. The method for searching the high-dimensional data using a signature file includes calculating a first-level query signature and a second-level query signature by using the query feature vector, performing a first filtering operation to obtain a primary candidate cell group by searching a second-level signature file, and performing a secondary filtering operation to obtain a secondary candidate cell group having a high similarity in a primary candidate cell group. Accordingly, the high-dimensional data searching method and system can process a query quickly and accurately and can increase the searching accuracy by using an enhanced signature of the query feature vector.

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Stefan Berchtold et al., “The X-tree: An Index Structure for High-Dimensional Data”, Proceedings of the 22ndVLDB Conference Mumbai (Bombay), India, 1996, pp. 28-39.

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