641 search results - page 48 / 129 » Studying Query Expansion Effectiveness |
MM
2004
ACM
14 years 1 months ago
2004
ACM
Image annotations allow users to access a large image database with textual queries. There have been several studies on automatic image annotation utilizing machine learning techn...
WWW
2009
ACM
14 years 8 months ago
2009
ACM
To deal with the problem of empty or too little answers returned from a Web database in response to a user query, this paper proposes a novel approach to provide relevant and rank...
DASFAA
2007
IEEE
14 years 2 months ago
2007
IEEE
With the increasing in demand on location-based aware services and RFIDs, efficient processing of continuous queries over moving object streams becomes important. In this paper, w...
DEXAW
2007
IEEE
13 years 11 months ago
2007
IEEE
The problem of efficiently evaluating XPath and XQuery queries has become increasingly significant since more and more XML data is stored in its native form. We propose a novel op...
VLDB
1995
ACM
13 years 11 months ago
1995
ACM
Traditionally, optimizers are “programmed” to optimize queries following a set of buildin procedures. However, optimizers should be robust to its changing environment to gener...