PPT-Class 4 – More Classifiers

Ramoza Ahsan Yun Lu Dongyun Zhang Zhongfang Zhuang Xiao Qin Salah Uddin Ahmed Lesson 41 Classification Boundaries Classification Boundaries Visualization of the data in the training stage of building a classifier can provide guidance in parameter selection. . Schütze. and Christina . Lioma. Lecture . 14: Vector Space Classification. 1. Overview. Recap . . Feature selection. Intro vector space classification . . Rocchio. . kNN. Linear classifiers. 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 . Traditional Clustering . Goal is to identify similar groups of objects. Groups . (clusters, new . classes) are discovered. Dataset consists of attributes. Unsupervised (class label has to be learned). 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 . Notes on Classification. Padhraic. Smyth. Department of Computer Science. University of California, Irvine. Review. Models that are linear in parameters . b. , e.g.,. y = . b. 0. + . b. . 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).. Logistic Regression, SVMs. CISC 5800. Professor Daniel Leeds. Maximum A Posteriori: a quick review. Likelihood:. Prior: . Posterior Likelihood x prior = . MAP estimate:. . .  . Choose . and . to give the prior belief of Heads bias . Machine Learning Algorithms . Mohak . Shah Nathalie . Japkowicz. GE . Software University of Ottawa. ECML 2013, . Prague. “Evaluation is the key to making real progress in data mining”. [Witten & Frank, 2005], p. 143. Donald . Solick. , Matthew Clement, Kevin Murray, Christopher Nations, and Jeffery Gruver. Western . EcoSystems. Technology (WEST), Inc.. Full-Spectrum (FS). Time and Frequency. Amplitude. Multiple frequency content. Logistic Regression, SVMs. CISC 5800. Professor Daniel Leeds. Maximum A Posteriori: a quick review. Likelihood:. Prior: . Posterior Likelihood x prior = . MAP estimate:. . .  . Choose . and . to give the prior belief of Heads bias . Chapters . 18.5-18.12; 20.2.2. Decision Regions and Decision Boundaries. Classifiers:. Decision trees. K-nearest neighbors. Perceptrons. Support . vector Machines (SVMs), Neural . Networks. Naïve . Bayes. 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: . Logistic Regression, SVMs. CISC 5800. Professor Daniel Leeds. Maximum A Posteriori: a quick review. Likelihood:. Prior: . Posterior Likelihood x prior = . MAP estimate:. . .  . Choose . and . to give the prior belief of Heads bias .