522 search results - page 25 / 105 » Answering Aggregation Queries in a Secure System Model |
PODS
2005
ACM
14 years 7 months ago
2005
ACM
Abstract. We present a semantics and answer set programs for relational peer data exchange systems. When a peer answers a query, it exchanges data with other peers in order to supp...
WWW
2006
ACM
14 years 8 months ago
2006
ACM
We introduce a new, powerful class of text proximity queries: find an instance of a given "answer type" (person, place, distance) near "selector" tokens matchi...
CIKM
2010
Springer
13 years 2 months ago
2010
Springer
The gap between the user's information need and query is expanding due to the pervasiveness of Web search. Multimedia question answering is restricted by disjoint infrastruct...
DKE
2007
13 years 7 months ago
2007
Histogram techniques have been used in many commercial database management systems to estimate a query result size. Recently, it has been shown that they are very effective to su...
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
We present a system for efficient meta-data indexed querying of XML documents. Given the diversity of the information available in XML, it is very useful to annotate XML data wit...