PPT-Logistic Regression

STA2101442 F 2014 See last slide for copyright information Binary outcomes are common and important The patient survives the operation or does not The accused is convicted or is not The customer makes a purchase or does not. SIT095. The Collection and Analysis of Quantitative Data II. Week 9. Luke Sloan. Introduction. Recap – Last Week. Workshop Feedback. Multinomial Logistic Regression in SPSS. Model Interpretation. In Class Exercise. SIT095. The Collection and Analysis of Quantitative Data II. Week 7. Luke Sloan. About Me. Name: Dr Luke Sloan. Office: 0.56 . Glamorgan. Email: . SloanLS@cardiff.ac.uk. To see me: . please email first. David Kauchak. CS451 – Fall 2013. Admin. Assignment 7. logistic regression: three views. linear classifier. conditional model. logistic. linear model minimizing logistic loss. Logistic regression. Why is it called logistic regression?. Learning. Part . II. Several slides from . Luke . Z. ettlemoyer. , . Carlos . Guestrin. , and . Ben . Taskar. We have talked about…. MLE. MAP and . Conjugate priors. Naïve Bayes. another probabilistic approach!!!. William Cohen. 1. SGD for Logistic Regression. 2. SGD for . Logistic regression. Start with . Rocchio. -like linear classifier:. Replace sign(. .... ) with something differentiable: . Also scale from 0-1 not -1 to +1. PERFECTION!. This is bad. Model Convergence Status. Quasi-complete separation of data points detected.. Warning:. The maximum likelihood estimate may not exist..  . Warning:. The LOGISTIC procedure continues in spite of the above warning. Results shown are based on the last maximum likelihood iteration. Validity of the model fit is questionable.. Comments on problem set. Sigmoidal growth curve. “Logistic Model” equation. Population dynamics. Management applications. Logistic growth. :. growth with limits. Because growth . is . typically . Lecture 4. September 12, 2016. School of Computer Science. Readings:. Murphy Ch. . 8.1-3, . 8.6. Elken (2014) Notes. 10-601 Introduction to Machine Learning. Slides:. Courtesy William Cohen. Reminders. Privacy-Preserving Machine Learning. Payman. . Mohassel. and . Yupeng. Zhang. Machine Learning. More data . → . Better Models. Image processing. Speech recognition. Ad recommendation. Playing Go. Weifeng Li and . Hsinchun. Chen. Credits: Hui Zou, University of Minnesota. Trevor Hastie, Stanford University. Robert . Tibshirani. , Stanford University. 1. Outline. Logistic Regression. Why Logistic Regression?. Maria - Florina Balcan 02/07/2018 Na Logistic Regression. Mark Hasegawa-Johnson, 2/2022. License: CC-BY 4.0. Outline. One-hot vectors: rewriting the perceptron to look like linear regression. Softmax. : Soft category boundaries. Cross-entropy = negative log probability of the training data. Outline. Linear regression. Regression: predicting a continuous value. Logistic regression. Classification: predicting a discrete value. Gradient descent. Very general optimization technique. Regression wants to predict a continuous-valued output for an input.. Logistic Regression. Important analytic tool in natural and social sciences. Baseline supervised machine learning tool for classification. Is also the foundation of neural networks. Generative and Discriminative Classifiers.