A search engine is disclosed which suggests related terms to the user to allow the user to refine a search. The related terms are generated using query term correlation data which reflects the frequencies with which specific terms have previously appeared within the same query. The correlation data is generated and stored in a look-up table (137) using an off-line process (136) which parses a query log file (135). The table (137) is regenerated periodically from the most recent query submissions (e.g., the last two weeks of query submissions), and thus strongly reflects the current preferences of users. Each related term is presented to the user via a respective hyperlink (910) which can be selected by the user to submit a modified query. In one embodiment, the related terms are added to and selected from the table (137) so as to guarantee that the modified queries will not produce a NULL query result.

Title
Dispositif et procede pour affiner des interrogations de recherche
System and method for refining search queries
Publication Number
2334792
Application Date
June 11, 1999
Publication Date
December 23, 1999
Inventor
Kohn Timothy R
Spiegel Joel R
Hamrick Michael L
Ortega Ruben E
Bowman Dwayne E
Agent
FETHERSTONHAUGH & CO
Assignee
A9com
Assignee
Amazoncom
IPC
G06F 17/30
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