306 search results - page 49 / 62 » Spark: top-k keyword query in relational databases |
PETRA
2009
ACM
14 years 2 months ago
2009
ACM
Event search is the problem of identifying events or activity of interest in a large database storing long sequences of activity. In this paper, our topic is the problem of identi...
FCSC
2008
13 years 7 months ago
2008
With the development of World Wide Web (WWW), storage and utilization of web data has become a big challenge for data management research community. Web data are essentially hetero...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
Given a query point and a collection of spatial features, a multi-type nearest neighbor (MTNN) query finds the shortest tour for the query point such that only one instance of eac...
WWW
2007
ACM
14 years 8 months ago
2007
ACM
As the data and ontology layers of the Semantic Web stack have achieved a certain level of maturity in standard recommendations such as RDF and OWL, the current focus lies on two ...
GIS
2004
ACM
14 years 8 months ago
2004
ACM
Modern database applications including computer-aided design, multimedia information systems, medical imaging, molecular biology, or geographical information systems impose new re...