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Outlier detection is an important issue in data mining and knowledge discovery. The aim is to find the patterns that deviate too much from others. In this paper, a universal outlier detection method based on normalized residual is proposed. Different from previous methods, the residual of a pattern is calculated corresponding to its nearest normal patterns, so that the interaction between outliers...
Based on data mining, the main impact factors of urban life water consumption are made gray relational analysis with the water consumption. The main driving factors of urban life water consumption are discussed. By the gray forecasting of the development trends of the main impact factors, a grey prediction of GM (0, N) model on urban life water is established. An instance proves to fit the data better...
When there is limited objective failure data, a method for developing the possibility distribution by subjective assignment strategies is put forward, which is illustrated by the lifetime data from fatigue reliability tests. Based on a limited fatigue life data, a study on reliability analysis of 40 axle-steel is presented, by constructing the possibility distribution function of the locomotive axle...
As the end point of the power system, a distribution system directly connects with the consumers. The reliability of power supply is directly related with consumers. However, uncertainty of the original parameters of components may be caused by lacking of statistical information and the statistic error. It will inevitably produce large errors if we directly use these parameters for evaluation. The...
Solid geometry is the emphasis and the difficulty in high school mathematical teaching. This paper described the design and implementation, Dragon 3D Sketchpad, a solid geometry intelligent educational platform for assisting the teaching and learning of solid geometry. It was a dynamic solid geometry software and had the ability of automated geometry reasoning, it could generate short and readable...
The practice-based design education is a common feature in design education. The art design teaching include two parts: theory education and practice education. How to construct the system of practice teaching is an core issue. This paper outlined a study of practice types in use about design, then it analyzed and summarized some principles about practice-based design roundly. At last, the effect...
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