Data Mining Learn(Preface)
Necessity, who is the mother of invention. --Plato
Exm01:Data mining turns a large collection of data into knowledge.
Data warehouse: data repository architecture.
The knowledge discovery process:
- Data cleaning;
- Data integration; (these 2 steps resulting in data warehouse)
- Data selsction;(from DB)
- Data transformation; (these 4 steps are data preprocessing)
- Data mining; (to extract data patterns)
- Pattern evaluation
- Knowlege presentation
Data mining is the process of discovering interesting patterns and knowledge from large amount of data. The data sources can include databases, data warehouses, the Web, other information repositories, or data that are streamed into the system dynamically.
