750 search results - page 31 / 150 » Aggregates in Possibilistic Databases |
ICDE
2010
IEEE
14 years 2 months ago
2010
IEEE
— Previous studies on supporting keyword queries in RDBMSs provide users with a ranked list of relevant linked structures (e.g. joined tuples) or individual tuples. In this paper...
FQAS
2009
Springer
14 years 2 months ago
2009
Springer
Abstract. Controlled languages (CLs) are ambiguity-free subsets of natural languages such as English offering a good trade-off between the formal rigor of ontology and query langua...
SAC
2006
ACM
14 years 1 months ago
2006
ACM
In the paper we describe the problem of grouping and aggregation in the concept-oriented data model. The model is based on ordering its elements within a hierarchical multidimensi...
ICDE
2004
IEEE
14 years 8 months ago
2004
IEEE
Several spatio-temporal applications require the retrieval of summarized information about moving objects that lie in a query region during a query interval (e.g., the number of m...
DASFAA
2007
IEEE
14 years 1 months ago
2007
IEEE
Abstract. In this paper, we explore the feature of sharing partial results of multiple queries to reduce the total number of messages incurred. Those queries sharing their partial ...