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Old 01-16-2013, 06:04 PM
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yaser yaser is offline
Join Date: Aug 2009
Location: Pasadena, California, USA
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Default Re: Discussion of Lecture 3

Originally Posted by vikasatkin View Post
Question: On the slide 6/23 why do we have flat regions on the graph?

Answer: Chances are, that during this flat regions, we don't change the classification of any point. We may change the coefficients on some steps, but most of the time we are just looking at the points, which are classified correctly, so we even don't change any coefficients (and probably we count these steps as iterations too and, therefore, getting flat regions in the graph of E_{in} and E_{out} for hundreds of iterations).
Indeed, this is how the plot in this slide was created. It would have looked different if we had counted only the iterations involving a misclassified point (hence a genuine update to the weight vector).
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