4276 search results - page 646 / 856 » Techniques for Empirical Validation |
257
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VLDB
2006
ACM
16 years 6 months ago
2006
ACM
In this paper we study the following problem. Given a database and a set of queries, we want to find a set of views that can compute the answers to the queries, such that the amoun...
244
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VLDB
2008
ACM
16 years 6 months ago
2008
ACM
This paper studies aggregate search in transaction time databases. Specifically, each object in such a database can be modeled as a horizontal segment, whose y-projection is its s...
272
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VLDB
2009
ACM
16 years 6 months ago
2009
ACM
Top-k queries on large multi-attribute data sets are fundamental operations in information retrieval and ranking applications. In this article, we initiate research on the anytime ...
251
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Many kinds of real-life data exhibit logical ordering among their data items and are thus sequential in nature. However, traditional online analytical processing (OLAP) systems an...
278
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SIGMOD
2006
ACM
16 years 6 months ago
2006
ACM
This paper introduces the Tuple Graph (TuG) synopses, a new class of data summaries that enable accurate selectivity estimates for complex relational queries. The proposed summari...