750 search results - page 28 / 150 » Aggregates in Possibilistic Databases |
DEXA
2005
Springer
14 years 9 days ago
2005
Springer
Computing aggregates over distributed data sets constitutes an interesting class of distributed queries. Recent advances in peer-to-peer discovery of data sources and query process...
ICDE
2009
IEEE
14 years 1 months ago
2009
IEEE
— A paramount challenge in probabilistic databases is the scalable computation of confidences of tuples in query results. This paper introduces an efficient secondary-storage o...
CORR
2011
Springer
13 years 1 months ago
2011
Springer
We study in this paper provenance information for queries with aggregation. Provenance information was studied in the context of various query languages that do not allow for aggr...
SIGMOD
2004
ACM
14 years 6 days ago
2004
ACM
Data items are often associated with a location in which they are present or collected, and their relevance or in uence decays with their distance. Aggregate values over such data...
HT
1991
ACM
13 years 10 months ago
1991
ACM
Hypertext systems are being used in many applications because of their flexible structure and the great browsing freedom they give to diverse communities of users. However, this s...