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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...
The development of automation technology has opened a new field — sensor fault diagnosis. Sensor is the source and foundation of information, once the sensor faults occur, which will lead to the degradation of automation system's performance, even disastrous consequences. There are various sensor fault diagnosis methods, while each method has its imperfection, so this paper has proposed to use fractal...
HF channel sounding requires perfect autocorrelation property of the sounding sequences. Compared with other pseudonoise sounding sequences, Zadoff-Chu sequence gets great attention due to its predominant periodic autocorrelation property. In order to adapt the spectrum property of Zadoff-Chu sequence to the requirement of HF channel sounding transmitter-receiver, the Formula Direct Interpolation...
APT model not only subverted the traditional theory of equilibrium pricing, but brought arbitrage pricing model into people's sight. But the key of APT is selection of factors. This paper used factor analysis attributed 10 factors to 4 common ones. Furthermore, it calculated the common factor expression and the linear regression model by data of 22 stocks from different fields in China's stock market,...
The periodic characteristics of the time series of yearly highest water level and yearly lowest water level in the lower tidal reaches of the Yangtze River are analyzed by using periodogram analysis and maximum entropy spectrum analysis according to the data (1964 ∼ 1987) of Wuhu, Nanjing and Jiangyin hydrologic station. The results show that the period all obtained in the yearly highest water level...
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...
In order to rapid restoration of motion blurred coal dust image, proposes a improved motion blur parameter estmation algorithm. Motion angle is estmated based on threshold filtering of image spectrum then Radon transform. Motion length is estmated based on median filtering, block averaging and autocorrelation function method. Restoration image uses Z transform. Experiment compare results show that...
Based on full investigation and further research of DSM, this paper established comprehensive evaluation index system, adopting fuzzy mathematics and Grey Theory. It established evaluation matrix of ray fuzzy in grey statistics, defining the weight of evaluation index according to grey correlation analysis. Evaluating the effect of DSM according to maximum membership degree principle, furthermore,...
Based on the financing scale data of Chinese listed companies, this article made an empirical analysis of the relationship between ownership arrangement and risk of tunneling, and drew some relevant conclusions. Compared with the SOEs, the risk of tunneling is higher in private listed companies, and therefore the financing scales were notably higher than the former. The higher proportion of shares...
During the period of e-government innovation, the occurrence of surplus of objects and asymmetry of information, along with the imperfection of market result in the corrupt activities of rent-seeking. The behavior of rent-seeking always yields such bad results that society resources wasted, procurement quality reduced and society atmosphere ruined. This paper starts with a review on the related work...
A modified MIMO channel estimation method based on superimposed training sequence was proposed for the frequency selective channel. By exploiting the uncorrelation between the training and information sequences, accurate primary channel parameters could be obtained without loss of bandwidth, and using weight factor averaged neighboring channel parameters. This mew method was presented to track the...
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...
In order to eliminate noise and singularities from dynamical test data, this paper employs spatial correlation of wavelet coefficients to remove noise by the feature, which noise-decomposed coefficients using wavelet transform are not correlative at the different finest scales, and uses the characteristic of the singularities through decomposing wavelet to eliminate these singularities, that is denoising...
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