331 search results - page 17 / 67 » A framework for selective query expansion |
SIGMOD
2001
ACM
14 years 8 months ago
2001
ACM
Estimating the result size of complex queries that involve selection on multiple attributes and the join of several relations is a difficult but fundamental task in database query...
CVPR
2008
IEEE
14 years 10 months ago
2008
IEEE
The state of the art in visual object retrieval from large databases is achieved by systems that are inspired by text retrieval. A key component of these approaches is that local ...
VLDB
1991
ACM
14 years 3 days ago
1991
ACM
We propose a two-pha.se algorithm for physical database design. In phase one the algorithm, for each logical query, losesrules to determine characteristics of a physical design (s...
SIGMOD
2009
ACM
14 years 8 months ago
2009
ACM
We present a complete XPath cost-based optimization and execution framework and demonstrate its effectiveness and efficiency for a variety of queries and datasets. The framework i...
SIGMOD
2007
ACM
14 years 8 months ago
2007
ACM
This paper proposes a demo of the TopX search engine, an extensive framework for unified indexing, querying, and ranking of large collections of unstructured, semistructured, and ...