Machine Learning

author: Doina Precup, School of Computer Science, McGill University
published: Aug. 23, 2016,   recorded: August 2016,   views: 50849


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We provide a general introduction to machine learning, aimed to put all participants on the same page in terms of definitions and basic background. After a brief overview of different machine learning problems, we discuss linear regression, its objective function and closed-form solution. We discuss the bias-variance trade-off and the issue of overfitting (and the proper use of cross-validation to measure performance objectively). We discuss the probabilistic view of the sum-squared error as maximizing likelihood under specific assumptions on the data generation process, and present L2 and L1 regularization methods as priors from a Bayesian perspective. We briefly discuss Bayesian methodology for learning. Finally, we present logistic regression, the cross-entropy optimization criterion and its solution through first- and second-order methods.

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Comment1 Ryan, August 25, 2016 at 5:51 a.m.:

I can't see anything.

Comment2 Wayne, August 27, 2016 at 3:13 p.m.:

Could u pls upload the videos to youtube? This site's speedy is really shitty ...

Comment3 Linda Cobb, September 9, 2016 at 11:02 p.m.:

The streaming on this site makes the videos impossible to watch, can we please get these put on YouTube?

Comment4 louis, October 16, 2016 at 1:27 p.m.:

Had the same issue but increased the size of the slides and thus minimized size of video then went full screen to have a perfect resolution.

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