Weekly plans and update for week 39_澳门葡京手机版app下载

mhjensen
2020-09-22T21:56:08.345Z
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www.uio.no

Hi all and welcome back to a new week with FYS-STK3155/4155. Last week we started our discussion of logistic regression and classification problems, as well as trying to summarize linear regression and project 1.

This week we extend the logistic regression formalism to include more classes. We limited our discussion last week to a binary classification problem. As we also saw last week, logistic regression leads to an optimization problem which cannot be solved analytically as we obtained in Ridge or OLS regression. This leads us to a central theme (and the working horses of all supervised learning algorithms), namely the family of gradient methods. We will devote some time to this and discuss both standard gradient descent and stochastic gradient methods.

The we...