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Telecom broadband is a main channel supporting internet surfing in China. With the market competition development, customer churn management has become a kernel task of marketing for telecommunication operators. The traditional market research methods are difficult to support the challenge of churn. Data mining techniques are applied to the customer churn management, to establish an early-warning...
Considering the current situation of the data on oil and gas resources in China, which is relatively multi-sourced, heterogeneous and decentralized, as well as the actual demand of OLAP, MVC model is employed as the system constructing model. Besides, ODBC and XML technology are combined to achieve dynamic mapping on database connection. Thus the National Petroleum Resource Database ETL System which...
In the past data mining and knowledge discovery, people mainly focused on the study of data mining algorithms, while neglected of research on knowledge expression, quantitative and qualitative transformation. The paper put the quantitative and qualitative characteristics of cloud model into hydrological time series analysis, and the construction method of runoff temporal and spatial distribution based...
To determine the buy and sell time is one of the most important issues for investors in stock market. In this paper, a fuzzy approach to stock market timing is investigated. A fuzzy decision system is constructed based on experiences and techniques of stock and future opportunist. The fuzzy rules are optimized by taking exchange volume into account for better fitting the stock market of mainland China...
According to the absolute income hypotheses of J. M. Keynes, it constructed the consumption model of Chinese urban households by using the statistical data from 1990 to 2007, and studied the long-term equilibrium as well as short-term fluctuations between per capita annual living expenditure and annual per capita disposable income of urban households in China. The result of Granger causality test...
Itpsilas a key problem for each country to balance and choose among money supply, inflation and economic growth. A DAG model can place restrictions on over recognitions of the innotion terms in a structural VAR model constituted by macroeconomic variables and can show the corresponding period and dynamic causality of economic variables at the same time. Using DAG model this paper finds that monetary...
This article used VAR model to analyze and verify the symbiosis between Chinese coal mining machinery enterprises and coal mining enterprises from the perspective of static state and dynamic state, it concluded that: there is a co-integration relationship between the actual output value of Chinese coal mining machinery enterprises and the actual value of Chinese coal mining enterprises, namely, there...
Aiming at the insufficiencies of traditional agricultural land grading methods, this study discussed the process and technical route of agricultural land grading based on decision tree analysis method and GIS, constructed an agricultural land grading model based on MATLAB and decision tree C4.5 algorithm. Furthermore, we took Luanwan village of Pingyin county in China for the empirical study, selected...
Based on snow depth data of Special Sensor Microwave Imager (SSM/I), snow cover data of NOAA/AVHRR, and snow depth and snow cover data of six weather stations over Northern Tibet Plateau (NTP), we studied snow cover distribution in temporal and spatial scales, and analyzed the influencing factors of snow in the NTP region. The results shown that, in the seasonal cycle, the snow over extent increased...
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