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Machine Learning
book

Machine Learning

by Sergios Theodoridis
April 2015
Intermediate to advanced content levelIntermediate to advanced
1062 pages
40h 35m
English
Academic Press
Content preview from Machine Learning

Classification

In this case, a typical choice is to project on the half-space, Section 8.6.2, formed by the hyperplane

ynfn1,κ(,xn)=ρ,

si310_e

and the corresponding projection operator becomes

Pk(fn1)=fn1+βkκ(,xk),

si311_e

where

βk=ρykfn1,κ(,xk)κ(xk,xk),ifρykfn1,κ(,xk)>0,0,otherwise.

si312_e  (11.110)

Recall that the corresponding half-space is the 0-level set of the hinge loss function, ρ(yn,f(xn)) defined in (11.59).

Thus, for both cases, regression ...

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Publisher Resources

ISBN: 9780128015223