227 search results - page 11 / 46 » Rough Set Methods in Approximation of Hierarchical Concepts |
SIGIR
1999
ACM
13 years 12 months ago
1999
ACM
This paper presents a means of automatically deriving a hierarchical organization of concepts from a set of documents without use of training data or standard clustering technique...
ECIR
2006
Springer
13 years 9 months ago
2006
Springer
Abstract. In this paper we show how approximate matrix factorisations can be used to organise document summaries returned by a search engine into meaningful thematic categories. We...
JUCS
2008
13 years 7 months ago
2008
: In this paper, a new multi-layer level set method is proposed for multi-phase image segmentation. The proposed method is based on the conception of image layer and improved numer...
ALGORITHMICA
2008
13 years 7 months ago
2008
The notion of -kernel was introduced by Agarwal et al. [5] to set up a unified framework for computing various extent measures of a point set P approximately. Roughly speaking, a ...
ATAL
2008
Springer
13 years 9 months ago
2008
Springer
We define the class of games called simulation-based games, in which the payoffs are available as an output of an oracle (simulator), rather than specified analytically or using a...