Linear Models for Classification: Overview
Linear Models for Classification: Overview
Sargur N. Srihari
University at Buffalo, State University of New York USA
Machine Learning
Srihari
Topics in Linear Models for Classification
? Overview 1.Discriminant Functions 2.Probabilistic Generative Models 3.Probabilistic Discriminative Models 4.The Laplace Approximation
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Machine Learning
Srihari
Topics in Overview
1. Regression vs Classification 2. Linear Classification Models 3. Converting probabilistic regression output
to classification output 4. Three classes of classification models
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Machine Learning
Srihari
Regression vs Classification
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Machine Learning
Srihari
Regression vs Classification
? In Regression we assign input vector x to one or more continuous target variables t
? Linear regression has simple analytical and computational properties
? In Classification we assign input vector x to one of K discrete classes Ck, k = 1, . . . ,K
? Common classification scenario: classes considered disjoint
? Each input assigned to only one class
? Input space is thereby divided into decision regions
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