664 search results - page 4 / 133 » Adaptive Selectivity Estimation Using Query Feedback |
ICC
2007
IEEE
13 years 12 months ago
2007
IEEE
Abstract— This paper presents precoding design for errorrate improvement in closed-loop multiuser orthogonal space-time block-coded (OSTBC) multiple-input multiple-output (MIMO) ...
GLOBECOM
2008
IEEE
14 years 1 days ago
2008
IEEE
— The search for optimality in the design of channel precoders and training symbols in block processing communication systems is one of paramount importance. Finding the best tra...
ICIP
2001
IEEE
14 years 7 months ago
2001
IEEE
In this paper, an optimal relevance algorithm is proposed, which adapts the response of a content-based image retrieval (CBIR) system to the user's information needs. In part...
ICDE
2002
IEEE
14 years 7 months ago
2002
IEEE
The ability to provide accurate and efficient result estimations of user queries is very important for the query optimizer in database systems. In this paper, we show that the tra...
SIGIR
2010
ACM
13 years 9 months ago
2010
ACM
Pseudo-relevance feedback is an effective technique for improving retrieval results. Traditional feedback algorithms use a whole feedback document as a unit to extract words for ...