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-   -   Linear model in lecture 18 (http://book.caltech.edu/bookforum/showthread.php?t=1640)

Andrs 09-20-2012 02:44 AM

Linear model in lecture 18
In lecture 18("Epilogue"), there is a nice map about machine learning (slide 4/23). One class is "Models" that describes the different algorithms used in machine learning. Some of the algorithms under models are "Linear", "SVM", "Neural Networks", "nearest neighbors", etc.
I have a question about the class of models that are "linear". The most basic linear algorithm is the perceptron. But I would say that SVM (Support Vector Machine)could also be defined as a linear algorithm as well as "Linear Discriminant Analysis" and "linear regression" (not well fitted for classif but it is a linear model). That is, under the linear umbrella, there are many different algorithms. Of course, things starts becoming more difuse when we use z-transform (or kernel) in the linrear algorithms. But still there is the question about the criteria and purpose to create a generic linear class. What was the intention to have a "Linear class" and a different class called "SVM" under the models?

yaser 09-20-2012 10:11 AM

Re: Linear model in lecture 18
You are right. With the Z transform, many models fall under the linear umbrella. As a matter of terminology, the "straight" linear models such as perceptrons as linear regression are the ones often referred to as linear models.

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