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Open AccessJournal ArticleDOI

Choosing Multiple Parameters for Support Vector Machines

TLDR
The problem of automatically tuning multiple parameters for pattern recognition Support Vector Machines (SVMs) is considered by minimizing some estimates of the generalization error of SVMs using a gradient descent algorithm over the set of parameters.
Abstract
The problem of automatically tuning multiple parameters for pattern recognition Support Vector Machines (SVMs) is considered. This is done by minimizing some estimates of the generalization error of SVMs using a gradient descent algorithm over the set of parameters. Usual methods for choosing parameters, based on exhaustive search become intractable as soon as the number of parameters exceeds two. Some experimental results assess the feasibility of our approach for a large number of parameters (more than 100) and demonstrate an improvement of generalization performance.

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Proceedings ArticleDOI

Learning The Discriminative Power-Invariance Trade-Off

TL;DR: This paper investigates the problem of learning optimal descriptors for a given classification task using the kernel learning framework and learns the optimal, domain-specific kernel as a combination of base kernels corresponding to base features which achieve different levels of trade-off.
Journal ArticleDOI

A Novel Transductive SVM for Semisupervised Classification of Remote-Sensing Images

TL;DR: A novel modified TSVM classifier designed for addressing ill-posed remote-sensing problems is proposed that is able to mitigate the effects of suboptimal model selection and can address multiclass cases.
Journal ArticleDOI

The Kernel Least-Mean-Square Algorithm

TL;DR: It is shown that with finite data the KLMS algorithm can be readily used in high dimensional spaces and particularly in RKHS to derive nonlinear, stable algorithms with comparable performance to batch, regularized solutions.
Journal ArticleDOI

Machine learning and radiology

TL;DR: It is shown that machine learning plays a key role in many radiology applications and the performance of machine learning-based automatic detection and diagnosis systems has shown to be comparable to that of a well-trained and experienced radiologist.
Proceedings Article

Cluster Kernels for Semi-Supervised Learning

TL;DR: A framework to incorporate unlabeled data in kernel classifier, based on the idea that two points in the same cluster are more likely to have the same label is proposed by modifying the eigenspectrum of the kernel matrix.
References
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Book

The Nature of Statistical Learning Theory

TL;DR: Setting of the learning problem consistency of learning processes bounds on the rate of convergence ofLearning processes controlling the generalization ability of learning process constructing learning algorithms what is important in learning theory?
Journal ArticleDOI

Support-Vector Networks

TL;DR: High generalization ability of support-vector networks utilizing polynomial input transformations is demonstrated and the performance of the support- vector network is compared to various classical learning algorithms that all took part in a benchmark study of Optical Character Recognition.

Statistical learning theory

TL;DR: Presenting a method for determining the necessary and sufficient conditions for consistency of learning process, the author covers function estimates from small data pools, applying these estimations to real-life problems, and much more.
Book

An Introduction to Support Vector Machines and Other Kernel-based Learning Methods

TL;DR: This is the first comprehensive introduction to Support Vector Machines (SVMs), a new generation learning system based on recent advances in statistical learning theory, and will guide practitioners to updated literature, new applications, and on-line software.
Journal ArticleDOI

Molecular classification of cancer: class discovery and class prediction by gene expression monitoring.

TL;DR: A generic approach to cancer classification based on gene expression monitoring by DNA microarrays is described and applied to human acute leukemias as a test case and suggests a general strategy for discovering and predicting cancer classes for other types of cancer, independent of previous biological knowledge.