scispace - formally typeset
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.

read more

Content maybe subject to copyright    Report

Citations
More filters
Journal ArticleDOI

Customizing Kernel Functions for SVM-Based Hyperspectral Image Classification

TL;DR: Spectrally weighted kernels based on learning weights by gradient descent are proposed and found to be slightly better than an alternative method based on estimating ";relevance"; between band information and ground truth.
Journal ArticleDOI

Developing a new intelligent system for the diagnosis of tuberculous pleural effusion

TL;DR: The proposed artificial intelligence based diagnostic model is found to be highly reliable for diagnosing TPE based on simple clinical signs, blood samples and pleural effusion samples and can be widely used in clinical practice and further evaluated for use as a substitute of invasive pleural biopsies.
Journal ArticleDOI

Classification of Heart Sound Signal Using Multiple Features

TL;DR: The methodology discussed in this paper can be used to diagnose heart disorders in patients up to 97% accuracy and is improved, automatic classification algorithm for cardiac disorder by heart sound signal.
Journal ArticleDOI

Classification of colonic tissues using near-infrared Raman spectroscopy and support vector machines.

TL;DR: NIR Raman spectroscopy in combination with a powerful SVM technique has great potential for providing an effective and accurate diagnostic schema for cancer diagnosis in the colon.
Journal ArticleDOI

Model selection for support vector machine classification

TL;DR: In this paper, an extension to the case of SVMs with quadratic slack penalties is given and a simple approximation for the evidence is derived, which can be used as a criterion for model selection.
References
More filters
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.