1666 search results - page 219 / 334 » Effective and efficient structured retrieval |
MIR
2005
ACM
14 years 3 months ago
2005
ACM
In this paper, we will propose a novel semi-automatic annotation scheme for video semantic classification. It is well known that the large gap between high-level semantics and low...
ICDE
2007
IEEE
14 years 11 months ago
2007
IEEE
Linear optimization queries retrieve the top-K tuples in a sliding window of a data stream that maximize/minimize the linearly weighted sums of certain attribute values. To effici...
SIGMOD
2009
ACM
14 years 10 months ago
2009
ACM
In this paper, we study a novel form of continuous nearest neighbor queries in the presence of obstacles, namely continuous obstructed nearest neighbor (CONN) search. It considers...
SIGMOD
2004
ACM
14 years 10 months ago
2004
ACM
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...
WMPI
2004
ACM
14 years 3 months ago
2004
ACM
Abstract. The large and growing impact of memory hierarchies on overall system performance compels designers to investigate innovative techniques to improve memory-system efficienc...