1666 search results - page 219 / 334 » Effective and efficient structured retrieval |
180
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MIR
2005
ACM
15 years 9 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...
243
Voted
ICDE
2007
IEEE
16 years 4 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...
223
Voted
SIGMOD
2009
ACM
16 years 3 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...
149
Voted
SIGMOD
2004
ACM
16 years 3 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 ...
181
Voted
WMPI
2004
ACM
15 years 8 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...