17329 search results - page 28 / 3466 » Improved non-approximability results |
IJCAI
2003
13 years 10 months ago
2003
Many real life optimization problems contain both hard and soft constraints, as well as qualitative conditional preferences. However, there is no single formalism to specify all t...
SIGIR
2008
ACM
13 years 8 months ago
2008
ACM
We present a novel passage-based approach to re-ranking documents in an initially retrieved list so as to improve precision at top ranks. While most work on passage-based document...
DASFAA
2008
IEEE
14 years 3 months ago
2008
IEEE
State-of-the-art Peer-to-Peer Information Retrieval (P2P IR) systems suffer from their lack of response time guarantee especially with scale. To address this issue, a number of tec...
MM
2006
ACM
14 years 2 months ago
2006
ACM
In the area of image retrieval, post-retrieval processing is often used to refine the retrieval results to better satisfy users’ requirements. Previous methods mainly focus on p...
WWW
2010
ACM
14 years 3 months ago
2010
ACM
Result diversity is a topic of great importance as more facets of queries are discovered and users expect to find their desired facets in the first page of the results. However,...