1263 search results - page 25 / 253 » A Scalable Algorithm for Answering Queries Using Views |
AMW
2009
13 years 9 months ago
2009
Abstract. A Data Warehouse (DW) is a data repository that organizes and physically integrates data from multiple sources under special kinds of schemas. A DW is composed by a set o...
AICOM
2004
13 years 8 months ago
2004
Abstract. We address the problem of answering queries using expressive symmetric inter-schema constraints which allow to establish mappings between several heterogeneous informatio...
DMDW
2000
13 years 9 months ago
2000
As views in a data warehouse become more complex, the view maintenance process can become very complicated and potentially very inefficient. Storing auxiliary views in the warehou...
ICDT
2007
ACM
14 years 2 months ago
2007
ACM
Abstract. In many cases, users may want to consider incomplete answers to their queries. Often, however, there is an overwhelming number of such answers, even if subsumed answers a...
TREC
2000
13 years 9 months ago
2000
In this paper we report on the effectiveness of query-biased summaries for a question-answering task. Our summarisation system presents searchers with short summaries of documents...