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IJCNN
2007
IEEE
16 years 26 days ago
Evaluation of Performance Measures for SVR Hyperparameter Selection
— To obtain accurate modeling results, it is of primal importance to find optimal values for the hyperparameters in the Support Vector Regression (SVR) model. In general, we sea...
Koen Smets, Brigitte Verdonk, Elsa Jordaan
IBPRIA
2007
Springer
16 years 22 days ago
A Fast and Robust Iris Segmentation Method
Image preprocessing stage (also known as iris segmentation) is the first step of the iris recognition process and determines its accuracy. In this paper, we propose a method for ir...
Noé Otero-Mateo, Miguel A. Vega-Rodrí...
ICANN
2007
Springer
16 years 22 days ago
Selection of Basis Functions Guided by the L2 Soft Margin
Support Vector Machines (SVMs) for classification tasks produce sparse models by maximizing the margin. Two limitations of this technique are considered in this work: firstly, th...
Ignacio Barrio, Enrique Romero, Lluís Belan...
WEBI
2007
Springer
16 years 20 days ago
An unsupervised hierarchical approach to document categorization
— We propose a hierarchical approach to document categorization that requires no pre-configuration and maps the semantic document space to a predefined taxonomy. The utilizatio...
Robert Wetzker, Tansu Alpcan, Christian Bauckhage,...
SIBGRAPI
2005
IEEE
16 years 4 days ago
Linear Complexity Stereo Matching Based on Region Indexing
This paper presents a linear complexity method for real-time stereo matching, in which the processing time is only dependent on the image resolution. Regions along each epipolar l...
Marco Antonio Floriano de Oliveira, Raul Sidnei Wa...