Data Preprocessing_1

Data Preprocessing_1

1. Data Cleaning

   • Missing Values
   • Noisy Data
   • Data Cleaning as a Process

2. Data Integration and Transformation

   • Data Integration
   • Data Tansformation

3. Data Reduction

   • Data Cube Aggregation
   • Attribute Subset Selection
   • Dimensionality Reduction
   • Numerosity Reduction

4. Data Discretization and concept Hierarchy Generation

   • Discretization and Concept Hierarchy Generation for Numerical Data
   • Concept Hierarchy Generation for Categorical