1263 search results - page 17 / 253 » A Scalable Algorithm for Answering Queries Using Views |
PVLDB
2010
13 years 5 months ago
2010
This paper addresses the problem of explaining missing answers in queries that include selection, projection, join, union, aggregation and grouping (SPJUA). Explaining missing ans...
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 ...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
We study the problem of answering queries through a target schema, given a set of mappings between one or more source schemas and this target schema, and given that the data is at...
CIKM
2010
Springer
13 years 5 months ago
2010
Springer
We introduce EntityEngine, a system for answering entityrelationship queries over text. Such queries combine SQLlike structures with IR-style keyword constraints and therefore, ca...