ID3 algorithm is the earliest and most influential of decision tree algorithm. This paper discusses the basic idea and implementation methods of the ID3 algorithm. A new algorithm based on attribute similarity for multivalued bias of ID3 algorithm was proposed, and the experimental results proved that the improved algorithm has strong predictive accuracy and better understandability.
In the electronic commerce (e-commerce) environment, customer relationship management (CRM) is the core of e-commerce activities, and the customer in the CRM plays a vital role to the enterprise's development. Data mining technology can provide decision support for enterprises in the aspects such as the acquisition and maintaince of customers and the analysis of consumer satisfaction research research (CSR), to improve the market competitiveness of enterprises. This article tells the application of data mining techniques in some areas of CRM.
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