383 search results - page 22 / 77 » Query Containment for Conjunctive Queries with Regular Expre... |
ICDE
2010
IEEE
14 years 8 months ago
2010
IEEE
Many online or local data sources provide powerful querying mechanisms but limited ranking capabilities. For instance, PubMed allows users to submit highly expressive Boolean keywo...
ICDT
2011
ACM
13 years 3 days ago
2011
ACM
The goal of Knowledge Compilation is to represent a Boolean expression in a format in which it can answer a range of online-queries in PTIME. The online-query of main interest to ...
SIGIR
2012
ACM
11 years 11 months ago
2012
ACM
People are seldom aware that their search queries frequently mismatch a majority of the relevant documents. This may not be a big problem for topics with a large and diverse set o...
PODS
2010
ACM
14 years 1 months ago
2010
ACM
Both semantic and type-based query optimization rely on the idea that queries often exhibit non-trivial rewritings if the state space of the database is restricted. Despite their ...
DEXAW
1998
IEEE
14 years 28 days ago
1998
IEEE
Materialized views offer opportunities for significant performance gain in query evaluation by providing fast access to pre-computed data. The question of when and how to use a ma...