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The supply chain based on e-business is different from the traditional supply chain. Now, there is no effective system for the performance evaluation of the supply chain based on e-business. We build a BP neutral network model, developing a performance evaluation system of the supply chain based on e-business. After 6 times training, the performance of the network can meet the requirements. The tests...
The article introduces the structures of Information retrieval system and retrieval process, elaborate the classification of Information retrieval, describe the evaluation index of Information retrieval.
For the recognition of different similar airplane targets, a set of wavelet moment invariants are applied based on the invariant moment theory and wavelet analysis, and a feature selection algorithm based on the DB Index guidelines is presented in order to get a locally optimum feature set. The experimental results prove that this algorithm is superior to Hu's moment invariants and Zernike's moment...
It is convenient and useful to use the Monte Carlo simulation (MCS) in project schedule management, but at the same time, it provides very few management indexes for schedule risk analysis. Therefore, based on PERT network assumption, the shortcomings of current construction schedule management indexes are summarized and new construction schedule management index is put forward to calculate the criticality...
Based on the kind of phenomenon that the research of the rural travel characters almost blank, this paper focus on the travel features of the Dafeng city rural residents, it builds the quality evaluation index system of the travelling of the Dafeng city rural resident from four aspects which include: travel destination is accessibility, Travel road is comfortable, travel facilities are perfective,...
Band selection is an important problem in hyperspectral image processing. In this paper, an improved adaptive band selection method is proposed to choose the best bands combination which can provide useful information, small correlation, and good property for classification. The computing process is firstly conducted by block computation to select the more valuable bands. Secondly, the Euclidean distances...
The most fundamental means of maintaining mechanical safety is to systematically carry out safety design and analysis in the mechanical design process. The fuzzy comprehensive evaluation method is to take the advantages of the level analytic hierarchy process and fuzzy comprehensive evaluation method. Firstly, the evaluation index system is divided into ladder level structure, calculated the index...
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