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Popular data reduction technique - PowerPoint PPT Presentation

Data Pre-processing

Data Pre-processing

Data Pre-processing. Data cleaning Fill in missing values, smooth noisy data, identify or remove outliers, and resolve inconsistencies Data integration Integration of multiple databases, data cubes, or files Data transformation Normalization and aggregation Data reduction

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1.16k views • 55 slides
Data Mining: Data Preparation

Data Mining: Data Preparation

Data Mining: Data Preparation. Data Preprocessing. Why preprocess the data? Data cleaning Data integration and transformation Data reduction Discretization and concept hierarchy generation Summary. Why Data Preprocessing?. Data in the real world is dirty

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636 views • 37 slides
Data Mining: Data Preparation

Data Mining: Data Preparation

Data Mining: Data Preparation. Data Preprocessing. Why preprocess the data? Data cleaning Data integration and transformation Data reduction Discretization and concept hierarchy generation Summary. Why Data Preprocessing?. Data in the real world is dirty

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675 views • 37 slides
Chapter 2 Data Preprocessing

Chapter 2 Data Preprocessing

Chapter 2 Data Preprocessing. Data Types and Forms. Attribute-value data: Data types numeric, categorical ( see the hierarchy for its relationship ) static, dynamic (temporal) Other kinds of data distributed data text, Web, meta data images, audio/video. Chapter 2: Data Preprocessing.

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736 views • 33 slides
Chapter 1 Data Preprocessing

Chapter 1 Data Preprocessing

Chapter 1 Data Preprocessing. Data Types and Forms. Attribute-value data: Data types numeric, categorical ( see the hierarchy for its relationship ) static, dynamic (temporal) Other kinds of data distributed data text, Web, meta data images, audio/video. Chapter 2: Data Preprocessing.

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1.8k views • 33 slides

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