Sciweavers

5954 search results - page 282 / 1191
» Querying Bi-level Information
Sort
View
WWW
2010
ACM
15 years 7 months ago
Classification-enhanced ranking
Many have speculated that classifying web pages can improve a search engine's ranking of results. Intuitively results should be more relevant when they match the class of a q...
Paul N. Bennett, Krysta Marie Svore, Susan T. Duma...
EDBT
2002
ACM
125views Database» more  EDBT 2002»
16 years 6 months ago
Estimating Answer Sizes for XML Queries
Abstract. Estimating the sizes of query results, and intermediate results, is crucial to many aspects of query processing. In particular, it is necessary for effective query optimi...
Yuqing Wu, Jignesh M. Patel, H. V. Jagadish
CIKM
2009
Springer
15 years 11 months ago
Answering XML queries using materialized views revisited
Answering queries using views is a well-established technique in databases. In this context, two outstanding problems can be formulated. The first one consists in deciding whethe...
Xiaoying Wu, Dimitri Theodoratos, Wendy Hui Wang
SIGMOD
2000
ACM
99views Database» more  SIGMOD 2000»
15 years 11 months ago
WSQ/DSQ: A Practical Approach for Combined Querying of Databases and the Web
We present WSQ/DSQ (pronounced “wisk-disk”), a new approach for combining the query facilities of traditional databases with existing search engines on the Web. WSQ, for Web-S...
Roy Goldman, Jennifer Widom
DPD
1998
117views more  DPD 1998»
15 years 6 months ago
Solving Local Cost Estimation Problem for Global Query Optimization in Multidatabase Systems
To meet users’ growing needs for accessing pre-existing heterogeneous databases, a multidatabase system (MDBS) integrating multiple databases has attracted many researchers recen...
Qiang Zhu, Per-Åke Larson