203 search results - page 9 / 41 » Answering Queries Using Views with Arithmetic Comparisons |
PODS
2005
ACM
14 years 7 months ago
2005
ACM
We investigate the question of whether a query can be answered using a set V of views. We first define the problem in information-theoretic terms: we say that V determines if V pr...
EDBT
2000
ACM
13 years 11 months ago
2000
ACM
The MIX mediator systems incorporates a novel framework for navigation-driven evaluation of virtual mediated views. Its architecture allows the on-demand computation of views and q...
VLDB
2002
ACM
14 years 7 months ago
2002
ACM
The view selection problem is to choose a set of views to materialize over a database schema, such that the cost of evaluating a set of workload queries is minimized and such that ...
EMNLP
2004
13 years 8 months ago
2004
Anticipating the availability of large questionanswer datasets, we propose a principled, datadriven Instance-Based approach to Question Answering. Most question answering systems ...
VLDB
2004
ACM
14 years 21 days ago
2004
ACM
XML languages, such as XQuery, XSLT and SQL/XML, employ XPath as the search and extraction language. XPath expressions often define complicated navigation, resulting in expensive...