Extension Data Mining Based on Extension Set and Rough Set

Data mining has gained popularity in the database field recently, the gained knowledge is static because of the static nature of the database, and does not reflect the dynamic nature of knowledge. Extension data mining is a product combining Extenics with data mining, By using the theory and method of Extenics, it can mine the knowledge from database which is relative to solve contradictory problems. And the knowledge includes the Extension classification knowledge, conductive knowledge and other knowledge associated with transformation, which collectively called Extension knowledge. Its Application to enterprise brands segmentation will help the enterprises to gain their ends on the best way. Research result indicates that extension data mining can provide effective decide support for the Decision-making of enterprise.