306 search results - page 37 / 62 » Data Exchange: Semantics and Query Answering |
103
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ACL
2011
14 years 3 months ago
2011
We develop a novel approach to the semantic analysis of short text segments and demonstrate its utility on a large corpus of Web search queries. Extracting meaning from short text...
SIGMOD
1990
ACM
15 years 3 months ago
1990
ACM
The role of database knowledge 1susually limited to the evaluation of data queries In this paper we argue that when this knowledge 1sof substantial volume and complexity, there 1s...
175
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VLDB
2007
ACM
15 years 12 months ago
2007
ACM
Several recent papers have focused on OLAP over imprecise data, where each fact can be a region, instead of a point, in a multidimensional space. They have provided a multiple-wor...
JELIA
1998
Springer
15 years 4 months ago
1998
Springer
Abstract. One of the maincharacteristics of logical reasoning in knowledge based systems is its high computational complexity. Anytime deduction and anytime compilation are two att...
112
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AICOM
2004
14 years 11 months ago
2004
Abstract. We address the problem of answering queries using expressive symmetric inter-schema constraints which allow to establish mappings between several heterogeneous informatio...