| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a system for indexing and searching databases. SOLUTION: A search system generates an index for databases by generatively sampling the databases and uses that index to identify and formulate queries for searching the databases. The generated index is referred to as a domain-attribute index and contains a domain-level index and site-level indexes. A site-level index for a database maps site attribute to distinct attribute values within the databases. The domain-level index for a domain maps attribute values to database and site attributes pairs that contain those attribute values. COPYRIGHT: (C)2006,JPO&NCIPI
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