Data Mining: Concepts and Techniques
Chapter 2 Data Preprocessing 47 2.1 Why Preprocess the Data? 48 2.2 Descriptive Data Summarization 51 2.2.1 Measuring the Central Tendency 51 2.2.2 Measuring the Dispersion of Data 53 2.2.3 Graphic Displays of Basic Descriptive Data Summaries 56 2.3 Data Cleaning 61 2.3.1 Missing Values 61 2.3.2 Noisy Data 62 2.3.3 Data Cleaning as a Process 65 ...
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2.4.8 Kullback-Leibler Divergence
hanj.cs.illinois.edufrom an observed frequency distribution, as illustrate in the following example. Example 2.24. Computing the KL Divergence by Smoothing. Sup-pose there are two sample distributions P and Q as follows: P: (a: 3/5,b:
Data Mining: Concepts and Techniques
hanj.cs.illinois.edu3.5 From Data Warehousing to Data Mining 146 3.5.1 Data Warehouse Usage 146 3.5.2 From On-Line Analytical Processing to On-Line Analytical Mining 148 3.6 Summary 150 Exercises 152 Bibliographic Notes 154 Chapter 4 Data Cube Computation and Data Generalization 157 4.1 Efficient Methods for Data Cube Computation 157
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