507 search results - page 43 / 102 » Portfolio theory of information retrieval |
KDD
2003
ACM
14 years 8 months ago
2003
ACM
Two-dimensional contingency or co-occurrence tables arise frequently in important applications such as text, web-log and market-basket data analysis. A basic problem in contingenc...
CIKM
2007
Springer
14 years 1 months ago
2007
Springer
Several problems in text categorization are too hard to be solved by standard bag-of-words representations. Work in kernel-based learning has approached this problem by (i) consid...
KDD
2004
ACM
14 years 1 months ago
2004
ACM
We present a graph-theoretic approach to discover storylines from search results. Storylines are windows that offer glimpses into interesting themes latent among the top search re...
SIGIR
2005
ACM
14 years 1 months ago
2005
ACM
In Information Retrieval (IR), the Dirichlet Priors have been applied to the smoothing technique of the language modeling approach. In this paper, we apply the Dirichlet Priors to...
WWW
2008
ACM
14 years 8 months ago
2008
ACM
In this paper we examine 1) the scope of geo-ontologies used especially for the purposes of information retrieval on the Web, 2) the core geographical concepts and their mutual re...