List of Exercises: Data Mining 1 December 12th, 2015
|
|
|
- Warren Dixon
- 5 years ago
- Views:
Transcription
1 List of Exercises: Data Mining 1 December 12th, We trained a model on a two-class balanced dataset using five-fold cross validation. One person calculated the performance of the classifier by measuring the accuracy in each fold and then averaging the results. Another person summed up all TP, FP, TN, FN, and then calculated the accuracy from these numbers. Will the results be different? If they are, which results is more trustable? 2. Table 1 summarizes a data set with three attributes A,B,C and two class labels + and. Build a two-level decision tree. Table 1: Table for question (2) A B C Number of Instances + T T T 5 0 F T T 0 20 T F T 20 0 F F T 0 5 T T F 0 0 F T F 25 0 T F F 0 0 F F F 0 25 a) According to the classification error rate, which attribute would be chosen as the first splitting attribute? For each attribute, show the contingency table and the gains in classification error rate. b) Repeat the same for the two children of the root node. c) How many instances are misclassified by the resulting decision tree? d) Repeat (a), (b) and (c) using C as the splitting attribute. 3. Draw the full decision tree for the parity function of four boolean attributes, A, B, C and D. Is it possible to simplify the tree? 4. Consider the training examples shown in Table 2 for a binary classification problem.
2 Table 2: Table for question (4) Customer ID Gender Car Type Shirt Size Class 1 M Family Small C0 2 M Sports Medium C0 3 M Sports Medium C0 4 M Sports Large C0 5 M Sports Extra Large C0 6 M Sports Extra Large C0 7 F Sports Small C0 8 F Sports Small C0 9 F Sports Medium C0 10 F Luxury Large C0 11 M Family Large C1 12 M Family Extra Large C1 13 M Family Medium C1 14 M Luxury Extra Large C1 15 F Luxury Small C1 16 F Luxury Small C1 17 F Luxury Medium C1 18 F Luxury Medium C1 19 F Luxury Medium C1 20 F Luxury Large C1
3 a) Compute the Gini index for the overall collection of training examples. b) Compute the Gini index for the Customer ID attribute. c) Compute the Gini index for the Gender attribute. d) Explain why Customer ID should not be used as the attribute test condition even though it has the lowest Gini index. 5. Consider the training examples shown in Table 3 for a binary classification problem. Table 3: Table for question (5) Instance a 1 a 2 a 3 Class 1 T T T T T F F T F T T F T F F F F F 5.0 a) What is the entropy of this collection of training examples with respect to the positive class? b) What are the information gains of a 1 and a 2 relative to these training examples? c) For a 3, which is a continuous attribute, compute the information gain for every possible split. d) What is the best split (among a 1, a 2, and a 3 ) according to the information gain? e) What is the best split (between a 1 and a 2 ) according to the classification error rate? f) What is the best split (between a 1 and a 2 ) according to the Gini index? 6. The data instances of Table 4 are sorted by decreasing probability value for the positive class (P), as returned by a classifier. For each
4 instance, compute the values for the number of true positives (TP), false positives (FP), true negatives (TN ), and false negatives (FN), for a threshold of 0.5. Compute the true positive rate (TPR) and false positive rate (FPR). Plot the ROC curve for the data. Table 4: Table for question (6) Instance Class Predicted Probability 1 P N P P N P N N N P Suppose that we want to select between two prediction models, M 1 and M 2. We have performed 10 rounds of 10-fold cross-validation on each model, where the same data partitioning in round i is used for both M 1 and M 2. The error rates obtained for M 1 are 30.5, 32.2, 20.7, 20.6, 31.0, 41.0, 27.7, 26.0, 21.5, The error rates for M 2 are 22.4, 14.5, 22.4, 19.6, 20.7, 20.4, 22.1, 19.4, 16.2, Comment on whether one model is significantly better than the other considering a significance level of 1%. 8. According to Han and Kamber (cf. reference book) what is the difference between classification and prediction? 9. Give three advantages and three disadvantages of Decision Tree models and of Support Vector Machines. 10. Knowing that 30% of the portuguese population has hypercholesterolaemia, that 60% of the same population is overweight, and that 80% of the patients with hypercholesterolaemia are overweight, what is the probability of an overweighted person having hypercholesterolaemia? Explicitly present your reasoning.
5 11. Considering the qualitative Bayesian model shown in Figure 1, and class variable LungCancer, what are the relevant nodes necessary to compute the probability of the class given the other variables? Figure 1: Bayes Network for question (11) 12. Given the dataset of Table 5 and class variable C, what would be the resulting probability table after Laplace correction? Table 5: Table for question (12) A B C T T T T F T F F T F T F T F F F F F 13. Consider that a model is trained and tested on the same dataset. What can you say about the performance of this classifier on new unseen data? 14. Consider that you are given a train-test split of a dataset. Assume that you create successively better models with respect to the testset
6 when training over and over again with the same training set. What can you say about the performance of the final model? 15. What are the main differences between Support Vector Machines and Neural Networks?
Evaluating Classifiers
Evaluating Classifiers Reading for this topic: T. Fawcett, An introduction to ROC analysis, Sections 1-4, 7 (linked from class website) Evaluating Classifiers What we want: Classifier that best predicts
Evaluating Classifiers
Evaluating Classifiers Reading for this topic: T. Fawcett, An introduction to ROC analysis, Sections 1-4, 7 (linked from class website) Evaluating Classifiers What we want: Classifier that best predicts
Data Mining Concepts & Techniques
Data Mining Concepts & Techniques Lecture No. 03 Data Processing, Data Mining Naeem Ahmed Email: naeemmahoto@gmail.com Department of Software Engineering Mehran Univeristy of Engineering and Technology
Data Mining Classification: Alternative Techniques. Imbalanced Class Problem
Data Mining Classification: Alternative Techniques Imbalanced Class Problem Introduction to Data Mining, 2 nd Edition by Tan, Steinbach, Karpatne, Kumar Class Imbalance Problem Lots of classification problems
DATA MINING LECTURE 11. Classification Basic Concepts Decision Trees Evaluation Nearest-Neighbor Classifier
DATA MINING LECTURE 11 Classification Basic Concepts Decision Trees Evaluation Nearest-Neighbor Classifier What is a hipster? Examples of hipster look A hipster is defined by facial hair Hipster or Hippie?
Probabilistic Classifiers DWML, /27
Probabilistic Classifiers DWML, 2007 1/27 Probabilistic Classifiers Conditional class probabilities Id. Savings Assets Income Credit risk 1 Medium High 75 Good 2 Low Low 50 Bad 3 High Medium 25 Bad 4 Medium
Data Mining Classification: Basic Concepts, Decision Trees, and Model Evaluation. Lecture Notes for Chapter 4. Introduction to Data Mining
Data Mining Classification: Basic Concepts, Decision Trees, and Model Evaluation Lecture Notes for Chapter 4 Introduction to Data Mining by Tan, Steinbach, Kumar Tan,Steinbach, Kumar Introduction to Data
Data Mining Classification: Basic Concepts, Decision Trees, and Model Evaluation. Lecture Notes for Chapter 4. Introduction to Data Mining
Data Mining Classification: Basic Concepts, Decision Trees, and Model Evaluation Lecture Notes for Chapter 4 Introduction to Data Mining by Tan, Steinbach, Kumar (modified by Predrag Radivojac, 2017) Classification:
ECLT 5810 Evaluation of Classification Quality
ECLT 5810 Evaluation of Classification Quality Reference: Data Mining Practical Machine Learning Tools and Techniques, by I. Witten, E. Frank, and M. Hall, Morgan Kaufmann Testing and Error Error rate:
DATA MINING LECTURE 9. Classification Basic Concepts Decision Trees Evaluation
DATA MINING LECTURE 9 Classification Basic Concepts Decision Trees Evaluation What is a hipster? Examples of hipster look A hipster is defined by facial hair Hipster or Hippie? Facial hair alone is not
MEASURING CLASSIFIER PERFORMANCE
MEASURING CLASSIFIER PERFORMANCE ERROR COUNTING Error types in a two-class problem False positives (type I error): True label is -1, predicted label is +1. False negative (type II error): True label is
Data Mining and Knowledge Discovery: Practice Notes
Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si 2016/11/16 1 Keywords Data Attribute, example, attribute-value data, target variable, class, discretization
Data Mining and Knowledge Discovery Practice notes 2
Keywords Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si Data Attribute, example, attribute-value data, target variable, class, discretization Algorithms
CS145: INTRODUCTION TO DATA MINING
CS145: INTRODUCTION TO DATA MINING 08: Classification Evaluation and Practical Issues Instructor: Yizhou Sun yzsun@cs.ucla.edu October 24, 2017 Learnt Prediction and Classification Methods Vector Data
Data Mining and Knowledge Discovery: Practice Notes
Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si 8.11.2017 1 Keywords Data Attribute, example, attribute-value data, target variable, class, discretization
Evaluation Measures. Sebastian Pölsterl. April 28, Computer Aided Medical Procedures Technische Universität München
Evaluation Measures Sebastian Pölsterl Computer Aided Medical Procedures Technische Universität München April 28, 2015 Outline 1 Classification 1. Confusion Matrix 2. Receiver operating characteristics
CSE4334/5334 DATA MINING
CSE4334/5334 DATA MINING Lecture 4: Classification (1) CSE4334/5334 Data Mining, Fall 2014 Department of Computer Science and Engineering, University of Texas at Arlington Chengkai Li (Slides courtesy
Classification Part 4
Classification Part 4 Dr. Sanjay Ranka Professor Computer and Information Science and Engineering University of Florida, Gainesville Model Evaluation Metrics for Performance Evaluation How to evaluate
Evaluating Machine-Learning Methods. Goals for the lecture
Evaluating Machine-Learning Methods Mark Craven and David Page Computer Sciences 760 Spring 2018 www.biostat.wisc.edu/~craven/cs760/ Some of the slides in these lectures have been adapted/borrowed from
DATA MINING LECTURE 9. Classification Decision Trees Evaluation
DATA MINING LECTURE 9 Classification Decision Trees Evaluation 10 10 Illustrating Classification Task Tid Attrib1 Attrib2 Attrib3 Class 1 Yes Large 125K No 2 No Medium 100K No 3 No Small 70K No 4 Yes Medium
Classification Salvatore Orlando
Classification Salvatore Orlando 1 Classification: Definition Given a collection of records (training set ) Each record contains a set of attributes, one of the attributes is the class. The values of the
CS4491/CS 7265 BIG DATA ANALYTICS
CS4491/CS 7265 BIG DATA ANALYTICS EVALUATION * Some contents are adapted from Dr. Hung Huang and Dr. Chengkai Li at UT Arlington Dr. Mingon Kang Computer Science, Kennesaw State University Evaluation for
Classification: Basic Concepts, Decision Trees, and Model Evaluation
Classification: Basic Concepts, Decision Trees, and Model Evaluation Data Warehousing and Mining Lecture 4 by Hossen Asiful Mustafa Classification: Definition Given a collection of records (training set
Weka ( )
Weka ( http://www.cs.waikato.ac.nz/ml/weka/ ) The phases in which classifier s design can be divided are reflected in WEKA s Explorer structure: Data pre-processing (filtering) and representation Supervised
Part II: A broader view
Part II: A broader view Understanding ML metrics: isometrics, basic types of linear isometric plots linear metrics and equivalences between them skew-sensitivity non-linear metrics Model manipulation:
Metrics for Performance Evaluation How to evaluate the performance of a model? Methods for Performance Evaluation How to obtain reliable estimates?
Model Evaluation Metrics for Performance Evaluation How to evaluate the performance of a model? Methods for Performance Evaluation How to obtain reliable estimates? Methods for Model Comparison How to
Classification and Regression
Classification and Regression Announcements Study guide for exam is on the LMS Sample exam will be posted by Monday Reminder that phase 3 oral presentations are being held next week during workshops Plan
Classification. Instructor: Wei Ding
Classification Part II Instructor: Wei Ding Tan,Steinbach, Kumar Introduction to Data Mining 4/18/004 1 Practical Issues of Classification Underfitting and Overfitting Missing Values Costs of Classification
CS 584 Data Mining. Classification 3
CS 584 Data Mining Classification 3 Today Model evaluation & related concepts Additional classifiers Naïve Bayes classifier Support Vector Machine Ensemble methods 2 Model Evaluation Metrics for Performance
Part I. Instructor: Wei Ding
Classification Part I Instructor: Wei Ding Tan,Steinbach, Kumar Introduction to Data Mining 4/18/2004 1 Classification: Definition Given a collection of records (training set ) Each record contains a set
Data Mining D E C I S I O N T R E E. Matteo Golfarelli
Data Mining D E C I S I O N T R E E Matteo Golfarelli Decision Tree It is one of the most widely used classification techniques that allows you to represent a set of classification rules with a tree. Tree:
Lecture Notes for Chapter 4
Classification - Basic Concepts, Decision Trees, and Model Evaluation Lecture Notes for Chapter 4 Slides by Tan, Steinbach, Kumar adapted by Michael Hahsler Look for accompanying R code on the course web
CS Machine Learning
CS 60050 Machine Learning Decision Tree Classifier Slides taken from course materials of Tan, Steinbach, Kumar 10 10 Illustrating Classification Task Tid Attrib1 Attrib2 Attrib3 Class 1 Yes Large 125K
Evaluating Machine Learning Methods: Part 1
Evaluating Machine Learning Methods: Part 1 CS 760@UW-Madison Goals for the lecture you should understand the following concepts bias of an estimator learning curves stratified sampling cross validation
BBS654 Data Mining. Pinar Duygulu. Slides are adapted from Nazli Ikizler
BBS654 Data Mining Pinar Duygulu Slides are adapted from Nazli Ikizler 1 Classification: Basic Concepts Classification: Basic Concepts Decision Tree Induction Bayes Classification Methods Model Evaluation
Data Mining Classification: Bayesian Decision Theory
Data Mining Classification: Bayesian Decision Theory Lecture Notes for Chapter 2 R. O. Duda, P. E. Hart, and D. G. Stork, Pattern classification, 2nd ed. New York: Wiley, 2001. Lecture Notes for Chapter
Naïve Bayes Classification. Material borrowed from Jonathan Huang and I. H. Witten s and E. Frank s Data Mining and Jeremy Wyatt and others
Naïve Bayes Classification Material borrowed from Jonathan Huang and I. H. Witten s and E. Frank s Data Mining and Jeremy Wyatt and others Things We d Like to Do Spam Classification Given an email, predict
CISC 4631 Data Mining
CISC 4631 Data Mining Lecture 03: Introduction to classification Linear classifier Theses slides are based on the slides by Tan, Steinbach and Kumar (textbook authors) Eamonn Koegh (UC Riverside) 1 Classification:
Part I. Classification & Decision Trees. Classification. Classification. Week 4 Based in part on slides from textbook, slides of Susan Holmes
Week 4 Based in part on slides from textbook, slides of Susan Holmes Part I Classification & Decision Trees October 19, 2012 1 / 1 2 / 1 Classification Classification Problem description We are given a
Information Management course
Università degli Studi di Milano Master Degree in Computer Science Information Management course Teacher: Alberto Ceselli Lecture 20: 10/12/2015 Data Mining: Concepts and Techniques (3 rd ed.) Chapter
Classification Algorithms in Data Mining
August 9th, 2016 Suhas Mallesh Yash Thakkar Ashok Choudhary CIS660 Data Mining and Big Data Processing -Dr. Sunnie S. Chung Classification Algorithms in Data Mining Deciding on the classification algorithms
CSE 5243 INTRO. TO DATA MINING
CSE 5243 INTRO. TO DATA MINING Classification (Basic Concepts) Huan Sun, CSE@The Ohio State University 09/12/2017 Slides adapted from UIUC CS412, Fall 2017, by Prof. Jiawei Han Classification: Basic Concepts
CS435 Introduction to Big Data Spring 2018 Colorado State University. 3/21/2018 Week 10-B Sangmi Lee Pallickara. FAQs. Collaborative filtering
W10.B.0.0 CS435 Introduction to Big Data W10.B.1 FAQs Term project 5:00PM March 29, 2018 PA2 Recitation: Friday PART 1. LARGE SCALE DATA AALYTICS 4. RECOMMEDATIO SYSTEMS 5. EVALUATIO AD VALIDATIO TECHIQUES
ECE 5470 Classification, Machine Learning, and Neural Network Review
ECE 5470 Classification, Machine Learning, and Neural Network Review Due December 1. Solution set Instructions: These questions are to be answered on this document which should be submitted to blackboard
CISC 4631 Data Mining
CISC 4631 Data Mining Lecture 05: Overfitting Evaluation: accuracy, precision, recall, ROC Theses slides are based on the slides by Tan, Steinbach and Kumar (textbook authors) Eamonn Koegh (UC Riverside)
Evaluation of different biological data and computational classification methods for use in protein interaction prediction.
Evaluation of different biological data and computational classification methods for use in protein interaction prediction. Yanjun Qi, Ziv Bar-Joseph, Judith Klein-Seetharaman Protein 2006 Motivation Correctly
Naïve Bayes Classification. Material borrowed from Jonathan Huang and I. H. Witten s and E. Frank s Data Mining and Jeremy Wyatt and others
Naïve Bayes Classification Material borrowed from Jonathan Huang and I. H. Witten s and E. Frank s Data Mining and Jeremy Wyatt and others Things We d Like to Do Spam Classification Given an email, predict
A Program demonstrating Gini Index Classification
A Program demonstrating Gini Index Classification Abstract In this document, a small program demonstrating Gini Index Classification is introduced. Users can select specified training data set, build the
2. On classification and related tasks
2. On classification and related tasks In this part of the course we take a concise bird s-eye view of different central tasks and concepts involved in machine learning and classification particularly.
Model s Performance Measures
Model s Performance Measures Evaluating the performance of a classifier Section 4.5 of course book. Taking into account misclassification costs Class imbalance problem Section 5.7 of course book. TNM033:
DATA MINING INTRODUCTION TO CLASSIFICATION USING LINEAR CLASSIFIERS
DATA MINING INTRODUCTION TO CLASSIFICATION USING LINEAR CLASSIFIERS 1 Classification: Definition Given a collection of records (training set ) Each record contains a set of attributes and a class attribute
Statistics 202: Statistical Aspects of Data Mining
Statistics 202: Statistical Aspects of Data Mining Professor Rajan Patel Lecture 9 = More of Chapter 5 Agenda: 1) Lecture over more of Chapter 5 1 Introduction to Data Mining by Tan, Steinbach, Kumar Chapter
Machine Learning. Decision Trees. Le Song /15-781, Spring Lecture 6, September 6, 2012 Based on slides from Eric Xing, CMU
Machine Learning 10-701/15-781, Spring 2008 Decision Trees Le Song Lecture 6, September 6, 2012 Based on slides from Eric Xing, CMU Reading: Chap. 1.6, CB & Chap 3, TM Learning non-linear functions f:
Pattern recognition (4)
Pattern recognition (4) 1 Things we have discussed until now Statistical pattern recognition Building simple classifiers Supervised classification Minimum distance classifier Bayesian classifier (1D and
Evaluation Metrics. (Classifiers) CS229 Section Anand Avati
Evaluation Metrics (Classifiers) CS Section Anand Avati Topics Why? Binary classifiers Metrics Rank view Thresholding Confusion Matrix Point metrics: Accuracy, Precision, Recall / Sensitivity, Specificity,
DATA MINING AND MACHINE LEARNING. Lecture 6: Data preprocessing and model selection Lecturer: Simone Scardapane
DATA MINING AND MACHINE LEARNING Lecture 6: Data preprocessing and model selection Lecturer: Simone Scardapane Academic Year 2016/2017 Table of contents Data preprocessing Feature normalization Missing
Classification. Slide sources:
Classification Slide sources: Gideon Dror, Academic College of TA Yaffo Nathan Ifill, Leicester MA4102 Data Mining and Neural Networks Andrew Moore, CMU : http://www.cs.cmu.edu/~awm/tutorials 1 Outline
Classification. Instructor: Wei Ding
Classification Decision Tree Instructor: Wei Ding Tan,Steinbach, Kumar Introduction to Data Mining 4/18/2004 1 Preliminaries Each data record is characterized by a tuple (x, y), where x is the attribute
Lecture 7: Decision Trees
Lecture 7: Decision Trees Instructor: Outline 1 Geometric Perspective of Classification 2 Decision Trees Geometric Perspective of Classification Perspective of Classification Algorithmic Geometric Probabilistic...
CREDIT RISK MODELING IN R. Finding the right cut-off: the strategy curve
CREDIT RISK MODELING IN R Finding the right cut-off: the strategy curve Constructing a confusion matrix > predict(log_reg_model, newdata = test_set, type = "response") 1 2 3 4 5 0.08825517 0.3502768 0.28632298
DATA MINING OVERFITTING AND EVALUATION
DATA MINING OVERFITTING AND EVALUATION 1 Overfitting Will cover mechanisms for preventing overfitting in decision trees But some of the mechanisms and concepts will apply to other algorithms 2 Occam s
CS249: ADVANCED DATA MINING
CS249: ADVANCED DATA MINING Classification Evaluation and Practical Issues Instructor: Yizhou Sun yzsun@cs.ucla.edu April 24, 2017 Homework 2 out Announcements Due May 3 rd (11:59pm) Course project proposal
CLASSIFICATION WITH RADIAL BASIS AND PROBABILISTIC NEURAL NETWORKS
CLASSIFICATION WITH RADIAL BASIS AND PROBABILISTIC NEURAL NETWORKS CHAPTER 4 CLASSIFICATION WITH RADIAL BASIS AND PROBABILISTIC NEURAL NETWORKS 4.1 Introduction Optical character recognition is one of
Business Club. Decision Trees
Business Club Decision Trees Business Club Analytics Team December 2017 Index 1. Motivation- A Case Study 2. The Trees a. What is a decision tree b. Representation 3. Regression v/s Classification 4. Building
Machine learning in fmri
Machine learning in fmri Validation Alexandre Savio, Maite Termenón, Manuel Graña 1 Computational Intelligence Group, University of the Basque Country December, 2010 1/18 Outline 1 Motivation The validation
Machine Learning for. Artem Lind & Aleskandr Tkachenko
Machine Learning for Object Recognition Artem Lind & Aleskandr Tkachenko Outline Problem overview Classification demo Examples of learning algorithms Probabilistic modeling Bayes classifier Maximum margin
Data Mining: Classifier Evaluation. CSCI-B490 Seminar in Computer Science (Data Mining)
Data Mining: Classifier Evaluation CSCI-B490 Seminar in Computer Science (Data Mining) Predictor Evaluation 1. Question: how good is our algorithm? how will we estimate its performance? 2. Question: what
Evaluation. Evaluate what? For really large amounts of data... A: Use a validation set.
Evaluate what? Evaluation Charles Sutton Data Mining and Exploration Spring 2012 Do you want to evaluate a classifier or a learning algorithm? Do you want to predict accuracy or predict which one is better?
INTRODUCTION TO MACHINE LEARNING. Measuring model performance or error
INTRODUCTION TO MACHINE LEARNING Measuring model performance or error Is our model any good? Context of task Accuracy Computation time Interpretability 3 types of tasks Classification Regression Clustering
10 Classification: Evaluation
CSE4334/5334 Data Mining 10 Classification: Evaluation Chengkai Li Department of Computer Science and Engineering University of Texas at Arlington Fall 2018 (Slides courtesy of Pang-Ning Tan, Michael Steinbach
Extra readings beyond the lecture slides are important:
1 Notes To preview next lecture: Check the lecture notes, if slides are not available: http://web.cse.ohio-state.edu/~sun.397/courses/au2017/cse5243-new.html Check UIUC course on the same topic. All their
CLASSIFICATION JELENA JOVANOVIĆ. Web:
CLASSIFICATION JELENA JOVANOVIĆ Email: jeljov@gmail.com Web: http://jelenajovanovic.net OUTLINE What is classification? Binary and multiclass classification Classification algorithms Naïve Bayes (NB) algorithm
Supervised Learning. Decision trees Artificial neural nets K-nearest neighbor Support vectors Linear regression Logistic regression...
Supervised Learning Decision trees Artificial neural nets K-nearest neighbor Support vectors Linear regression Logistic regression... Supervised Learning y=f(x): true function (usually not known) D: training
Network Traffic Measurements and Analysis
DEIB - Politecnico di Milano Fall, 2017 Sources Hastie, Tibshirani, Friedman: The Elements of Statistical Learning James, Witten, Hastie, Tibshirani: An Introduction to Statistical Learning Andrew Ng:
A Comparative Study of Locality Preserving Projection and Principle Component Analysis on Classification Performance Using Logistic Regression
Journal of Data Analysis and Information Processing, 2016, 4, 55-63 Published Online May 2016 in SciRes. http://www.scirp.org/journal/jdaip http://dx.doi.org/10.4236/jdaip.2016.42005 A Comparative Study
CS229 Lecture notes. Raphael John Lamarre Townshend
CS229 Lecture notes Raphael John Lamarre Townshend Decision Trees We now turn our attention to decision trees, a simple yet flexible class of algorithms. We will first consider the non-linear, region-based
Section A. 1. a) Explain the evolution of information systems into today s complex information ecosystems and its consequences.
Section A 1. a) Explain the evolution of information systems into today s complex information ecosystems and its consequences. b) Discuss the reasons behind the phenomenon of data retention, its disadvantages,
Data Mining and Knowledge Discovery Practice notes: Numeric Prediction, Association Rules
Keywords Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si Data Attribute, example, attribute-value data, target variable, class, discretization Algorithms
CS6375: Machine Learning Gautam Kunapuli. Mid-Term Review
Gautam Kunapuli Machine Learning Data is identically and independently distributed Goal is to learn a function that maps to Data is generated using an unknown function Learn a hypothesis that minimizes
An Efficient Decision Tree Model for Classification of Attacks with Feature Selection
An Efficient Decision Tree Model for Classification of Attacks with Feature Selection Akhilesh Kumar Shrivas Research Scholar, CVRU, Bilaspur (C.G.), India S. K. Singhai Govt. Engineering College Bilaspur
Machine Learning nearest neighbors classification. Luigi Cerulo Department of Science and Technology University of Sannio
Machine Learning nearest neighbors classification Luigi Cerulo Department of Science and Technology University of Sannio Nearest Neighbors Classification The idea is based on the hypothesis that things
Decision Trees Dr. G. Bharadwaja Kumar VIT Chennai
Decision Trees Decision Tree Decision Trees (DTs) are a nonparametric supervised learning method used for classification and regression. The goal is to create a model that predicts the value of a target
Predictive Analysis: Evaluation and Experimentation. Heejun Kim
Predictive Analysis: Evaluation and Experimentation Heejun Kim June 19, 2018 Evaluation and Experimentation Evaluation Metrics Cross-Validation Significance Tests Evaluation Predictive analysis: training
Fall 2018 CSE 482 Big Data Analysis: Exam 1 Total: 36 (+3 bonus points)
Fall 2018 CSE 482 Big Data Analysis: Exam 1 Total: 36 (+3 bonus points) Name: This exam is open book and notes. You can use a calculator but no laptops, cell phones, nor other electronic devices are allowed.
Classification with Decision Tree Induction
Classification with Decision Tree Induction This algorithm makes Classification Decision for a test sample with the help of tree like structure (Similar to Binary Tree OR k-ary tree) Nodes in the tree
Enhancing Forecasting Performance of Naïve-Bayes Classifiers with Discretization Techniques
24 Enhancing Forecasting Performance of Naïve-Bayes Classifiers with Discretization Techniques Enhancing Forecasting Performance of Naïve-Bayes Classifiers with Discretization Techniques Ruxandra PETRE
MACHINE LEARNING TOOLBOX. Logistic regression on Sonar
MACHINE LEARNING TOOLBOX Logistic regression on Sonar Classification models Categorical (i.e. qualitative) target variable Example: will a loan default? Still a form of supervised learning Use a train/test
Advanced Video Content Analysis and Video Compression (5LSH0), Module 8B
Advanced Video Content Analysis and Video Compression (5LSH0), Module 8B 1 Supervised learning Catogarized / labeled data Objects in a picture: chair, desk, person, 2 Classification Fons van der Sommen
CS570: Introduction to Data Mining
CS570: Introduction to Data Mining Classification Advanced Reading: Chapter 8.4 & 8.5 Han, Chapters 4.5 & 4.6 Tan Anca Doloc-Mihu, Ph.D. Slides courtesy of Li Xiong, Ph.D., 2011 Han, Kamber & Pei. Data
.. Cal Poly CSC 466: Knowledge Discovery from Data Alexander Dekhtyar.. for each element of the dataset we are given its class label.
.. Cal Poly CSC 466: Knowledge Discovery from Data Alexander Dekhtyar.. Data Mining: Classification/Supervised Learning Definitions Data. Consider a set A = {A 1,...,A n } of attributes, and an additional
Artificial Intelligence. Programming Styles
Artificial Intelligence Intro to Machine Learning Programming Styles Standard CS: Explicitly program computer to do something Early AI: Derive a problem description (state) and use general algorithms to
For continuous responses: the Actual by Predicted plot how well the model fits the models. For a perfect fit, all the points would be on the diagonal.
1 ROC Curve and Lift Curve : GRAPHS F0R GOODNESS OF FIT Reference 1. StatSoft, Inc. (2011). STATISTICA (data analysis software system), version 10. www.statsoft.com. 2. JMP, Version 9. SAS Institute Inc.,
Use of Synthetic Data in Testing Administrative Records Systems
Use of Synthetic Data in Testing Administrative Records Systems K. Bradley Paxton and Thomas Hager ADI, LLC 200 Canal View Boulevard, Rochester, NY 14623 brad.paxton@adillc.net, tom.hager@adillc.net Executive
Cross- Valida+on & ROC curve. Anna Helena Reali Costa PCS 5024
Cross- Valida+on & ROC curve Anna Helena Reali Costa PCS 5024 Resampling Methods Involve repeatedly drawing samples from a training set and refibng a model on each sample. Used in model assessment (evalua+ng
Machine Learning: Symbolische Ansätze
Machine Learning: Symbolische Ansätze Evaluation and Cost-Sensitive Learning Evaluation Hold-out Estimates Cross-validation Significance Testing Sign test ROC Analysis Cost-Sensitive Evaluation ROC space
Tutorials Case studies
1. Subject Three curves for the evaluation of supervised learning methods. Evaluation of classifiers is an important step of the supervised learning process. We want to measure the performance of the classifier.
CLASSIFICATION OF C4.5 AND CART ALGORITHMS USING DECISION TREE METHOD
CLASSIFICATION OF C4.5 AND CART ALGORITHMS USING DECISION TREE METHOD Khin Lay Myint 1, Aye Aye Cho 2, Aye Mon Win 3 1 Lecturer, Faculty of Information Science, University of Computer Studies, Hinthada,
Data Mining Classification - Part 1 -
Data Mining Classification - Part 1 - Universität Mannheim Bizer: Data Mining I FSS2019 (Version: 20.2.2018) Slide 1 Outline 1. What is Classification? 2. K-Nearest-Neighbors 3. Decision Trees 4. Model
Knowledge Discovery and Data Mining
Knowledge Discovery and Data Mining Lecture 10 - Classification trees Tom Kelsey School of Computer Science University of St Andrews http://tom.home.cs.st-andrews.ac.uk twk@st-andrews.ac.uk Tom Kelsey
Unknown Malicious Code Detection Based on Bayesian
Available online at www.sciencedirect.com Procedia Engineering 15 (2011) 3836 3842 Advanced in Control Engineering and Information Science Unknown Malicious Code Detection Based on Bayesian Yingxu Lai