941 search results - page 115 / 189 » Keyword Search over Dynamic Categorized Information |
CIKM
2008
Springer
13 years 10 months ago
2008
Springer
Inverse document frequency (IDF) is one of the most useful and widely used concepts in information retrieval. There have been various attempts to provide theoretical justification...
WSDM
2012
ACM
12 years 3 months ago
2012
ACM
We study the problem of correlating micro-blogging activity with stock-market events, defined as changes in the price and traded volume of stocks. Specifically, we collect messa...
WWW
2002
ACM
14 years 8 months ago
2002
ACM
Query expansion has long been suggested as an effective way to resolve the short query and word mismatching problems. A number of query expansion methods have been proposed in tra...
AIRWEB
2007
Springer
13 years 12 months ago
2007
Springer
The early success of link-based ranking algorithms was predicated on the assumption that links imply merit of the target pages. However, today many links exist for purposes other ...
SIGKDD
2000
13 years 7 months ago
2000
With over 800 million pages covering most areas of human endeavor, the World-wide Web is a fertile ground for data mining research to make a di erence to the e ectiveness of infor...