Transcription of Machine Learning: Generative and Discriminative Models
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Machine Learning: Generative and Discriminative Models
Machine Learning: Generative and Discriminative ModelsSargur N. Learning Course: ~srihari/CSE574 LearningSrihari2 Outline of Presentation1. What is Machine Learning?ML applications, ML as Search2. Generative and Discriminative Taxonomy3. Generative - Discriminative PairsClassifiers: Na ve Bayes and Logistic RegressionSequential Data: HMMs and CRFs4. Performance comparison in Sequential ApplicationsNLP: Table extraction, POS tagging, Shallow parsing, Handwritten word recognition, Document analysis5. Advantages, disadvantages6. Summary7. ReferencesMachine LearningSrihari31. Machine Learning Programming computers to use example data or past experience Well-Posed Learning Problems A computer program is said to learn from experience E with respect to class of tasks T and performance measure P, if its performance at tasks T, as measured by P, improves with experience LearningSrihari4 Problems Too Difficult To Program by Hand Learning to drive an autonomous vehicle Train computer-controlled vehicles to steer correctly Drive at 70 mph for 90 miles on public highways Associate steering commands with image sequencesTask T: driving on public, 4-lane highway using vision sensorsPerform measure P: average distance traveled before error (as judged by human ov)
Performance Comparison in Sequential Applications. NLP: Table extraction, POS tagging, Shallow parsing, Handwritten word recognition, Document analysis. 5. Advantages, disadvantages. 6. Summary 7. References. Machine Learning Srihari 3 1. Machine Learning • Programming computers to use
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