'Data transformation normalization' presentation slideshows

UNIT-II Data Preprocessing

UNIT-II Data Preprocessing. Why preprocess the data?. Why Data Preprocessing?. Data in the real world is dirty incomplete : lacking attribute values, lacking certain attributes of interest, or containing only aggregate data noisy : containing errors or outliers

1.86k views • 144 slides

Data Mining: Concepts and Techniques

Data Mining: Concepts and Techniques. Chapter 2: Data Preprocessing. Why preprocess the data? Descriptive data summarization Data cleaning Data integration and transformation Data reduction Discretization and concept hierarchy generation Summary. Major Tasks in Data Preprocessing.

1.07k views • 82 slides

Data Mining: Concepts and Techniques

Data Mining: Concepts and Techniques. Chapter 2: Data Preprocessing. Why preprocess the data? Descriptive data summarization Data cleaning Data integration and transformation Data reduction Discretization and concept hierarchy generation Summary. Major Tasks in Data Preprocessing.

821 views • 82 slides

814 views • 66 slides

Data Mining: Data

Data Mining: Data. Lecture Notes for Chapter 2 Introduction to Data Mining by Tan, Steinbach, Kumar (edited by S. Parthasarathy 3/2007). What is Data?. Collection of data objects and their attributes An attribute is a property or characteristic of an object

682 views • 42 slides

Data Mining: Data

Data Mining: Data. Lecture Notes for Chapter 2 Introduction to Data Mining by Tan, Steinbach, Kumar (edited by S. Parthasarathy 3/2007). What is Data?. Collection of data objects and their attributes An attribute is a property or characteristic of an object

497 views • 42 slides

302 views • 30 slides

Chapter 2: Data Preprocessing

Chapter 2: Data Preprocessing. Why preprocess the data? Descriptive data summarization Data cleaning Data integration and transformation Data reduction Discretization and concept hierarchy generation Summary. Data Cleaning. Importance

216 views • 21 slides