Transcription of Machine Learning and Data Mining Lecture Notes
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Machine Learning and Data Mining Lecture Notes
Machine Learning and Data MiningLecture NotesCSC 411/D11 Computer Science DepartmentUniversity of TorontoVersion: February 6, 2012 Copyrightc 2010 Aaron Hertzmann and David FleetCSC 411 / CSC D11 CONTENTSC ontentsConventions and Notationiv1 Introduction to Machine of Machine Learning .. simple problem ..22 Linear 1D case .. inputs .. outputs ..83 Nonlinear function regression .. and Regularization .. Neural Networks .. Neighbors .. a quadratic .. 185 Basic Probability logic .. definitions and rules .. random variables .. and Multinomial distributions .. expectation .. 266 Probability Density Functions (PDFs) expectation, mean, and variance .. distributions.
it works on future test data. When a model fits training data well, but performs poorly on test data, we say that the model has overfit the training data; i.e., the model has fit properties of the input that are not particularly relevant to the task at hand (e.g., Figures 1 (top row and bottom left)). Such properties are refered to as noise.
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