5954 search results - page 307 / 1191 » Querying Bi-level Information |
203
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SIGMOD
2004
ACM
16 years 6 months ago
2004
ACM
We study the problem of answering queries through a target schema, given a set of mappings between one or more source schemas and this target schema, and given that the data is at...
175
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PODS
2005
ACM
16 years 6 months ago
2005
ACM
We investigate the question of whether a query can be answered using a set V of views. We first define the problem in information-theoretic terms: we say that V determines if V pr...
199
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ICDE
2009
IEEE
16 years 1 months ago
2009
IEEE
— A paramount challenge in probabilistic databases is the scalable computation of confidences of tuples in query results. This paper introduces an efficient secondary-storage o...
165
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SEMCO
2008
IEEE
16 years 1 months ago
2008
IEEE
One challenge for relevance ranking in Web search is underspecified queries. For such queries, top-ranked documents may contain information irrelevant to the search goal of the us...
165
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ICMCS
2006
IEEE
16 years 24 days ago
2006
IEEE
In order to solve medical multimodal queries, we propose to split the queries in different dimensions using ontology. We extract both textual and visual terms depending on the ont...