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One important feature of geography phenomenon or spatial object is that there exists the spatial autocorrelation between them. As for a spatial sampling scheme for crop acreage estimation, the spatial autocorrelation of the sampling units has an important effect on the design of the sampling scheme and the improvement of the sampling efficiency. While the related researches on spatial autocorrelation...
In order to provide an effective decision assistance for food safety management department, this paper proposes a new evaluation model for food safety based on fuzzy hierarchical theory. During evaluating index calculation, fuzzy mathematics is used to calculate risk index of corresponding variety hazards and integrate comprehensive index of safety. The implementation results show that provided method...
In this paper, we broaden traditional marketplace segmentation index by creating a dynamic index system based on customer value, as in today's changing electronic business environment, customer purchasing behavior is more complicated, diversified and fast changing with more channels to choose. BP neural network is applied to create dynamic customer segmentation model. This segmentation model helps...
The relationship between the intensity of South Asia High (SAH) and North Atlantic sea surface temperature is further explored. The result shows not only Pacific Ocean and Indian Ocean sea surface temperature (SST) can affect SAH, but the North Atlantic SST can also have impact on SAH. The correlation coefficients between SAH intensity index (SI) and North-Atlantic index (NAI) is beyond 0.7 leading...
Arbitrage function is one of the most significant functions of ETF (exchange traded fund). The purpose of this research is to establish an ETF arbitrage decision support system. Through the analysis of arbitrage mechanism and arbitrage costs, the paper sets up an accurate ETF arbitrage model, and then exploit the system rely on the model above. The operations of the system mainly comprise four steps:...
Commercial real estate investment analysis is very important for the commercial real estate industry, which is influenced by a series of complicated and various factors. Previous research emphasized on a certain part of the investment analysis, such as, commercial real estate's market position, location, marketing strategy, risk control. Most of present works are to establish evaluation index system...
Mechanical design, mainly depending on the expert experience, is a complicated, uncertain and unstructured activity. Although mechanical products can be designed by skilled designers, the design process is still time-consuming and experience-dependent. To solve this problem, this paper develops a system applying case-based reasoning (CBR) methodology to support mechanical design process. In the CBR...
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