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.
Based on the uncertainty measurement theory and entropy weight method, the classification model for rock burst tendency of coal was established. Four indexes were selected as evaluation indexes, i.e., the dynamic failure time (DT), the elastic energy index (WET), the impact energy index (KE) and the uniaxial compressive strength (RC).The weight coefficients of above four evaluation indexes were calculated by the entropy theory. Finally, the model of rock burst tendency classification based on the uncertainty measurement theory was applied to the classification of five different coal samples. Compared with the comprehensive evaluation method and fuzzy comprehensive method, the results show that the uncertainty measurement model has excellent performance and high accuracy prediction, which proves that this method used to classify the rock burst tendency of coal is reasonable and effective.
In this paper, the distribution network structures divided as per the possible state configuration sequences based on different switch states (close/open) are analyzed with FMEA algorithm and calculated with regional equivalent improvement method. All switch configuration solutions will be assessed after the different regional economic advantages are fully considered and then the highest power availability solution on average is found. The case research shows that when the switch configuration comes to 111001, we get relatively balanced powersupply load of every branch and relatively high standard indexes.
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