PPT-Learning Classifiers from

Chains of Multiple Interlinked RDF Data Stores Harris T Lin and Vasant Honavar Artificial Intelligence Research Laboratory Department of Computer Science Iowa State University htliniastateedu. Tom M Mitchell All rights reserved DRAFT OF January 19 2010 PLEASE DO NOT DISTRIBUTE WITHOUT AUTHORS PERMISSION This is a rough draft chapter intended for inclusion in a possible second edition of the textbook Machine Learn ing TM Mitchell McGraw H Machine: Adversarial Detection . of Malicious . Crowdsourcing Workers . Gang . Wang. , Tianyi Wang, Haitao . Zheng, Ben . Y. Zhao . UC Santa Barbara. gangw@cs.ucsb.edu. Machine Learning for Security. Ata . Kaban. Motivation & beginnings. Suppose we have a learning algorithm that is guaranteed with high probability to be slightly better than random guessing – we call this a . weak learner. E.g. if an email contains the work “money” then classify it as spam, otherwise as non-spam. Reading. Ch. 18.6-18.12, 20.1-20.3.2. (Not Ch. 18.5). Outline. Different types of learning problems. Different types of learning algorithms. Supervised learning. Decision trees. Naïve Bayes. Perceptrons. Handshapes that represent people, objects, and descriptions.. Note: You cannot use the classifier without naming the object first.. Types of Classifiers. We will look at the types of classifiers . Size and Shape . Usman Roshan. CS 675. Comparison of classifiers. Empirical comparison of supervised classifiers – ICML 2006. Do we need hundreds of classifiers – JMLR 2014. Empirical comparison of supervised classifiers – ICML 2006 . Which of the two options increases your chances of having a good grade on the exam? . Solving the test individually. Solving the test in groups. Why?. Ensemble Learning. Weak classifier A. Ensemble Learning. Lifeng. Yan. 1361158. 1. Ensemble of classifiers. Given a set . of . training . examples, . a learning algorithm outputs a . classifier which . is an hypothesis about the true . function f that generate label values y from input training samples x. Given . Harris T. Lin. , . Sanghack. Lee, . Ngot. Bui and . Vasant. . Honavar. Artificial Intelligence Research Laboratory. Department of Computer Science. Iowa State University. htlin@iastate.edu. Introduction. Jenna Wiens*, John . Guttag. Massachusetts Institute of Technology, Cambridge, MA USA. How can we use Machine Learning to to automatically interpret an ECG?. Supervised Learning. +. +. +. -. -. -. -. . Nathalie Japkowicz. School of Electrical Engineering . & Computer Science. . University of Ottawa. nat@site.uottawa.ca. . Motivation: My story. A student and I designed a new algorithm for data that had been provided to us by the National Institute of Health (NIH).. . Nathalie Japkowicz. School of Electrical Engineering . & Computer Science. . University of Ottawa. nat@site.uottawa.ca. . Motivation: My story. A student and I designed a new algorithm for data that had been provided to us by the National Institute of Health (NIH).. Kernels Boost. Decision Trees. 1. Midterms. 2. Will be available at the TA sessions this week. Projects feedback . has been sent. . Recall that this is 25% of your grade!. Grades are on a curve. Ifeoma. Nwogu. i. on. @. cs.rit.edu. Lecture . 13 . – . Classifiers for images. Schedule. Last class . RANSAC and robust line fitting. Today. Review mid-term. Start classifiers. Readings for today: .