1559 search results - page 16 / 312 » Evaluation of Query Performance Prediction Methods by Range |
SSD
1999
Springer
13 years 11 months ago
1999
Springer
We provide an evaluation of query execution plans (QEP) in the case of queries with one or two spatial joins. The QEPs assume R -tree indexed relations and use a common set of spat...
WWW
2006
ACM
14 years 8 months ago
2006
ACM
Structural summaries are data structures that preserve all structural features of XML documents in a compact form. We investigate the applicability of the most popular summaries a...
ICDE
2002
IEEE
14 years 9 months ago
2002
IEEE
Obtaining fast and good quality approximations to data distributions is a problem of central interest to database management. A variety of popular database applications including,...
RE
2002
Springer
13 years 7 months ago
2002
Springer
Posing speculative questions about a software system is an important yet often unsupported activity. Current impact analysis techniques tend to focus upon the functionality of the...
ECIR
2010
Springer
13 years 9 months ago
2010
Springer
Abstract. This paper explores how to predict query difficulty for contextual image retrieval. We reformulate the problem as the task of predicting how difficult to represent a quer...