AAAI
1994
13 years 6 months ago
1994
Conceptual information retrieval systems use structured document indices, domain knowledge and a set of heuristic retrieval strategies to match user queries with a set of indices ...
CIKM
1999
Springer
13 years 9 months ago
1999
Springer
Prior work has shown that combining results of various retrieval approaches and query representations can improve search effectiveness. Today, many meta-search engines exist which...