With the growing worldwide awareness of environmental protection and sustainable development, green purchasing has become an important issue for companies to gain environmental and developmental sustainability. Thermal power is the main power generation form in China, and the green supplier selection is essential to the smooth and sustainable construction of thermal power plants. Therefore, sel...

Using logistic regression models to predict the probability that a unit will respond is one method for adjusting for survey nonresponse. The inverse of the propensity score can be the weight adjustment factor. This method can make use of more predictive variables than in the weighting class method. Having used this method for two previous rounds of a large physician survey, this paper describes...

Virtual enterprise can not only enhance an enterprise’s competitiveness but also increase risks it faces. According to the principles of virtual enterprise’s risk analysis and control, this paper decomposes virtual enterprise project into several tasks (nodes) and establishes virtual enterprise’s nodes as well as the whole alliance’s risk evaluation model. Then, it uses weighting method combini...

RFID technology is widely used in the fields of location and position awareness. The RFID data streams are uncertain and need accurate and timely processing, since they are influenced by many factors. We propose an uncertain data optimal algorithm for RFID data streams. By analyzing the existing deficiency in the conventional particle filter method, we use a method based on entropy to derive th...

The main purpose of this paper is to propose a novel latent semantic indexing (LSI), statistical approach to simultaneously mapping documents and terms into a latent semantic space. This approach can index documents more effectively than the vector space model (VSM). Latent semantic indexing (LSI), which is based on singular value decomposition (SVD), and probabilistic latent semantic indexing ...