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Informationen zum Autor Daniel T. Larose earned his PhD in Statistics at the University of Connecticut. He is Professor of Mathematical Sciences and Director of the Data Mining programs at Central Connecticut State University. His consulting clients have included Microsoft, Forbes Magazine, the CIT Group, KPMG International, Computer Associates, and Deloitte, Inc. This is Larose's fourth book for Wiley. Chantal D. Larose is an Assistant Professor of Statistics & Data Science at Eastern Connecticut State University (ECSU). She has co-authored three books on data science and predictive analytics. She helped develop data science programs at ECSU and at SUNY New Paltz. She received her PhD in Statistics from the University of Connecticut, Storrs in 2015 (dissertation title: Model-based Clustering of Incomplete Data). Klappentext The field of data mining lies at the confluence of predictive analytics, statistical analysis, and business intelligence. Due to the ever-increasing complexity and size of data sets and the wide range of applications in computer science, business, and health care, the process of discovering knowledge in data is more relevant than ever before. This book provides the tools needed to thrive in today's big data world. The author demonstrates how to leverage a company's existing databases to increase profits and market share, and carefully explains the most current data science methods and techniques. The reader will "learn data mining by doing data mining". By adding chapters on data modelling preparation, imputation of missing data, and multivariate statistical analysis, Discovering Knowledge in Data, Second Edition remains the eminent reference on data mining . Zusammenfassung The field of data mining lies at the confluence of predictive analytics, statistical analysis, and business intelligence. Due to the ever-increasing complexity and size of data sets and the wide range of applications in computer science, business, and health care, the process of discovering knowledge in data is more relevant than ever before. Inhaltsverzeichnis Preface xi Chapter 1 An Introduction to Data Mining 1 1.1 What is Data Mining? 1 1.2 Wanted: Data Miners 2 1.3 The Need for Human Direction of Data Mining 3 1.4 The Cross-Industry Standard Practice for Data Mining 4 1.4.1 Crisp-DM: The Six Phases 5 1.5 Fallacies of Data Mining 6 1.6 What Tasks Can Data Mining Accomplish? 8 1.6.1 Description 8 1.6.2 Estimation 8 1.6.3 Prediction 10 1.6.4 Classification 10 1.6.5 Clustering 12 1.6.6 Association 14 References 14 Exercises 15 Chapter 2 Data Preprocessing 16 2.1 Why do We Need to Preprocess the Data? 17 2.2 Data Cleaning 17 2.3 Handling Missing Data 19 2.4 Identifying Misclassifications 22 2.5 Graphical Methods for Identifying Outliers 22 2.6 Measures of Center and Spread 23 2.7 Data Transformation 26 2.8 Min-Max Normalization 26 2.9 Z -Score Standardization 27 2.10 Decimal Scaling 28 2.11 Transformations to Achieve Normality 28 2.12 Numerical Methods for Identifying Outliers 35 2.13 Flag Variables 36 2.14 Transforming Categorical Variables into Numerical Variables 37 2.15 Binning Numerical Variables 38 2.16 Reclassifying Categorical Variables 39 2.17 Adding an Index Field 39 2.18 Removing Variables that are Not Useful 39 2.19 Variables that Should Probably Not Be Removed 40 2.20 Removal of Duplicate Records 41 2.21 A Word About ID Fields 41 The R Zone 42 References 48 Exercises 48 Hands-On Analysis 50 Chapter 3 Exploratory Data Analysis 51 3.1 Hypothesis Testing Versus Exploratory Dat...
