2228 search results - page 84 / 446 » A System for Semantic Query Optimization |
AMW
2009
13 years 10 months ago
2009
Conventional operators for data retrieval are either based on exact matching or on total order relationship among elements. Neither of them is appropriate to manage complex data, s...
IDEAS
2007
IEEE
14 years 3 months ago
2007
IEEE
In this paper we study the problem of deciding whether a regular path query over views in data-integration systems can be re-expressed without recursion. The problem becomes chall...
ICDE
2007
IEEE
14 years 3 months ago
2007
IEEE
Main memory is a critical resource when processing non-blocking queries with state intensive operators that require real-time responses. While partitioned parallel processing can ...
KR
1992
Springer
14 years 1 months ago
1992
Springer
While the task of answering queries from an arbitrary propositional theory is intractable in general, it can typicallybe performed e ciently if the theory is Horn. This suggests t...
ACL
2009
13 years 7 months ago
2009
Query segmentation is essential to query processing. It aims to tokenize query words into several semantic segments and help the search engine to improve the precision of retrieva...