525 search results - page 96 / 105 » On Query Algebras for Probabilistic Databases |
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
We study the problem of e cient maintenance of materialized views that may contain duplicates. This problem is particularly important when queries against such views involve aggre...
ICANN
2005
Springer
14 years 28 days ago
2005
Springer
Text categorization and retrieval tasks are often based on a good representation of textual data. Departing from the classical vector space model, several probabilistic models have...
CHI
1995
ACM
13 years 11 months ago
1995
ACM
ld is a prototype IR user interface. It implements visualizations of an abstract information space – fulltext. The presentation demonstrates a visual user interface for the prob...
RIAO
1994
13 years 8 months ago
1994
Although commonly used in both commercial and experimental information retrieval systems, thesauri have not demonstrated consistent bene ts for retrieval performance, and it is di...
ICDE
2006
IEEE
14 years 1 months ago
2006
IEEE
— XML stream applications bring the challenge of efficiently processing queries on sequentially accessible tokenbased data. For efficient processing of queries, we need to ensu...