525 search results - page 56 / 105 » On Query Algebras for Probabilistic Databases |
117
Voted
DOLAP
2006
ACM
15 years 9 months ago
2006
ACM
Motivated by the increasing need to analyze complex, uncertain multidimensional data this paper proposes probabilistic OLAP queries that are computed using probability distributio...
143
Voted
SIGMOD
2005
ACM
15 years 9 months ago
2005
ACM
One of the most powerful features of SQL is the use of nested queries. Most research work on the optimization of nested queries focuses on aggregate subqueries. However, the solut...
125
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SIGMOD
2010
ACM
15 years 8 months ago
2010
ACM
The probabilistic threshold query (PTQ) is one of the most common queries in uncertain databases, where all results satisfying the query with probabilities that meet the threshold...
208
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SIGMOD
2007
ACM
16 years 3 months ago
2007
ACM
This paper describes query processing in the DBO database system. Like other database systems designed for ad-hoc, analytic processing, DBO is able to compute the exact answer to ...
157
Voted
ICDT
1997
ACM
15 years 7 months ago
1997
ACM
Abstract. The goal of this paper is to study tractable iteration mechanisms for bags. The presence of duplicates in bags prevents iteration mechanisms developed in the context of s...