3269 search results - page 288 / 654 » Query Optimization for XML |
130
Voted
CICLING
2005
Springer
15 years 10 months ago
2005
Springer
Abstract. With the current method of query formation, a Question Answering system retrieves a set of documents that are similar to a question, while what is mostly required is a se...
182
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VLDB
2001
ACM
15 years 9 months ago
2001
ACM
Most modern DBMS optimizers rely upon a cost model to choose the best query execution plan (QEP) for any given query. Cost estimates are heavily dependent upon the optimizer’s e...
260
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ICDE
2006
IEEE
16 years 6 months ago
2006
IEEE
The XPath language incorporates powerful primitives for formulating queries containing nested subexpressions which are existentially or universally quantified. However, even the b...
154
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DAWAK
2003
Springer
15 years 10 months ago
2003
Springer
We introduce a new method for optimization of SQL queries with nested subqueries. The method is based on the idea of Boolean aggregates, aggregates that compute the conjunction or ...
165
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SIGMOD
2012
ACM
13 years 7 months ago
2012
ACM
Query substitution is an important problem in information retrieval. Much work focuses on how to find substitutes for any given query. In this paper, we study how to efficiently ...