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To extract classification rules of hypertension more effectively, the C4.5 decision tree algorithm was put forward. Firstly, C4.5 algorithm was used to analyse pre-processed hypertension data and a decision tree model was constructed. Then, the understandable classification rules were extracted and the maintaining method was used to test the accuracy of the classification results. Finally, the improved...
This paper is based on data analysis and literatures, land use system, demographic factors, and economic development situation, fiscal and financial policies which have influence on the price of the house are studied. In order to discuss housing price purely on the basis of statistical data, the main factors and their weights are calculated based on the survey of house price and usage of grey theory...
Power transformer is a complicated system due to its stochastic, fuzzy and alterable behavior. It is a decision-making problem of engineering system to assess transformer behavior. Qualitative knowledge and quantitative data need to be integrated. Quantitative change and qualitative change all need be reflected in the assessment results of transformer behavior. The behavior of whole transformer system...
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