394 search results - page 10 / 79 » On Feature Extraction via Kernels |
WWW
2009
ACM
14 years 10 months ago
2009
ACM
Image spam is a new obfuscating method which spammers invented to more effectively bypass conventional text based spam filters. In this paper, we extract local invariant features ...
ESANN
2007
13 years 11 months ago
2007
We study dimensionality reduction or feature selection in text document categorization problem. We focus on the first step in building text categorization systems, that is the cho...
AIIA
2007
Springer
14 years 4 months ago
2007
Springer
We present a simple, two-steps supervised strategy for the identification and classification of thematic roles in natural language texts. We employ no external source of informat...
NIPS
2004
13 years 11 months ago
2004
A new distance measure between probability density functions (pdfs) is introduced, which we refer to as the Laplacian pdf distance. The Laplacian pdf distance exhibits a remarkabl...
ACL
2010
13 years 8 months ago
2010
This paper proposes a convolution forest kernel to effectively explore rich structured features embedded in a packed parse forest. As opposed to the convolution tree kernel, the p...