151 search results - page 17 / 31 » Materializing views with minimal size to answer queries |
STOC
2006
ACM
16 years 4 hour ago
2006
ACM
Producing a small DNF expression consistent with given data is a classical problem in computer science that occurs in a number of forms and has numerous applications. We consider ...
SEMWEB
2004
Springer
15 years 5 months ago
2004
Springer
Abstract. Increasing the number of peers in a peer-to-peer network usually increases the number of answers to a given query as well. While having more answers is nice in principle,...
100
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SIGMOD
1995
ACM
15 years 3 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...
VLDB
1995
ACM
15 years 3 months ago
1995
ACM
In this paper we introduce generalized projections (GPs), an extension of duplicateeliminating projections, that capture aggregations, groupbys, duplicate-eliminating projections ...
115
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PVLDB
2010
14 years 6 months ago
2010
Top-k spatial preference queries return a ranked set of the k best data objects based on the scores of feature objects in their spatial neighborhood. Despite the wide range of loc...