383 search results - page 36 / 77 » Query Containment for Conjunctive Queries with Regular Expre... |
VLDB
2007
ACM
14 years 9 months ago
2007
ACM
Views over probabilistic data contain correlations between tuples, and the current approach is to capture these correlations using explicit lineage. In this paper we propose an al...
EDBT
2006
ACM
14 years 8 months ago
2006
ACM
Abstract. We present in this paper a new model for representing probabilistic information in a semi-structured (XML) database, based on the use of probabilistic event variables. Th...
SIGMOD
2007
ACM
14 years 8 months ago
2007
ACM
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
CACM
1998
13 years 8 months ago
1998
abstraction for modeling these problems is to view the Web as a collection of (usually small and heterogeneous) databases, and to view programs that extract and process Web data au...
LREC
2008
13 years 10 months ago
2008
We describe a web-based corpus query system, Glossa, which combines the expressiveness of regular query languages with the user-friendliness of a graphical interface. Since corpus...