537 search results - page 81 / 108 » The Impact of Query Structure and Query Expansion on Retriev... |
WWW
2008
ACM
14 years 9 months ago
2008
ACM
Current search engines do not support user searches for chemical entities (chemical names and formulae) beyond simple keyword searches. Usually a chemical molecule can be represen...
ICIP
1999
IEEE
14 years 10 months ago
1999
IEEE
A neural network scheme is presented in this paper for adaptive video indexing and retrieval. First, a limited but characteristic amount of frames are extracted from each video sc...
INFOCOM
2006
IEEE
14 years 3 months ago
2006
IEEE
— For a wide variety of sensor network environments, location information is unavailable or expensive to obtain. We propose a location-free, lightweight, distributed, and data-ce...
CIKM
2009
Springer
14 years 3 months ago
2009
Springer
Most of existing methods of keyword search over relational databases find the Steiner trees composed of relevant tuples as the answers. They identify the Steiner trees by discove...
SIGIR
2012
ACM
11 years 11 months ago
2012
ACM
Many techniques for improving search result quality have been proposed. Typically, these techniques increase average effectiveness by devising advanced ranking features and/or by...