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International Symposium on Computational Intelligence and Design, ISCID

作者： Xueqin Li Cong Li Li Ma College of Computer Science Sichuan Normal University Chengdu China Visual Computing and Virtual Reality Key Laboratory of Sichuan Province Chengdu China Library Sichuan Normal University Chengdu China

ISBN: (纸本)9781479970063

Online shopping has become an important and popular way of life. With the rapid C2C platform development, the credit problem in online shopping was being discussed. Serious loss of credit will leads to bad online business environment. However, till now lots of researchers just focus on seller reputation model to solve credit problem, thus buyer reputation model is seldom being considered. To solve the above problem, we proposed a Computational Buyer Reputation Model for C2C e-Commerce platform, i.e. CBRM. Five buyer reputation indicators, including transactions amount, seller ratings, buyer operations, chargeback ratio and real name authentication, were integrated into CBRM. By using AHP to distribute various indicator weights, we can obtain numeric value of buyer reputation. Therefore, these values can be used for sellers to choose appropriate buyers to deal with. Experiment results showed the efficiency and effectiveness of CBRM.

关键词： Mathematical model Computational modeling Solid modeling Authentication Numerical models visualization virtual reality

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Business process reengineering for better sale of china lubricant enterprises

Business process reengineering for better sale of china lubr...

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5th International Conference on Computational Intelligence and Communication Networks, CICN 2013

作者： Li, Cong Feng, Lin Ma, Li Visual Computing and Virtual Reality Key Laboratory of Sichuan Province Sichuan Normal University Chengdu China Library Sichuan Normal University Chengdu China

ISBN: (纸本)9780768550695

With the rapid development of new economy, China lubricant enterprises urgently need to implement effective Customer Relationship Management (CRM) to win the market. By constructing and applying CRM, lubricant enterprises can keep their old customers and find potential customers, so the profit and core competitive power of lubricant enterprises can all be increased. In this paper we optimized the traditional sales process of China lubricant enterprises, designed a new business process reengineering (BPR) and built a pyramid model of CRM application tactics. The new BPR can be helpful for effectively CRM implementation of China lubricant enterprises. © 2013 IEEE.

关键词： Sales

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A semi-supervised collaboration-training based on genetic algorithm for unlabeled data selection

A semi-supervised collaboration-training based on genetic al...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Tao Guo Guiyang Li Xia Lan Visual Computing and Virtual Reality Key Laboratory of Sichuan Province Chengdu College of Computer Science Sichuan Normal University Chengdu

ISBN: (纸本)9781479902590

When unlabeled data is selected for updating classifier, it is easy to introduce noise or unreliable data. In this paper, a semi-supervised collaboration-training based on genetic algorithm (SCGA) is proposed. This algorithm uses optimization function of genetic algorithm to help collaboration-training algorithm to select valuable unlabeled data. Experiments on UCI datasets prove that the algorithm is useful for updating classifiers effectively and can prevent the introduction of noise.

关键词： Breast cancer Diabetes Abstracts Genetics Filtering algorithms Artificial neural networks Encoding

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LIMITING BEHAVIOR OF BLOW-UP SOLUTIONS OF THE NLSE WITH A STARK POTENTIAL

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Acta Mathematica Scientia 2012年第3期32卷 1181-1192页

作者：朱世辉张健 College of Mathematics and Software Science Sichuan Normal University Visual Computing and Virtual Reality Key Laboratory Sichuan Normal University

This article is concerned with blow-up solutions of the Cauchy problem of critical nonlinear SchrSdinger equation with a Stark potential. By using the variational characterization of corresponding ground state, the limiting behavior of blow-up solutions with critical and small super-critical mass are obtained in the natural energy space ∑ = {u ∈ H^1; fRN ｜x｜^2｜u｜^2dx 〈＋∞）}. Moreover, an interesting concentration property of the blow-up solutions with critical mass is gotten, which reads that ｜u（t, x）｜^2→ ｜｜Q｜｜L^2 2 δx=x1 as t → T.

关键词： Nonlinear Schroedinger equation Stark potential blow-up solution limiting behavior mass concentration

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Real-time controlling of crowd paths via distance propagating

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Journal of Computational Information Systems 2012年第19期8卷 8009-8016页

作者： Wu, He Qi, Li Gang, Lei Chen, Weilong Visual Computing and Virtual Reality Key Laboratory of Sichuan Province Sichuan Normal University Chengdu 610068 China Digital Media Department of Sichuan Normal University Chengdu 610068 China

In this paper, we propose a novel approach for controlling of crowd paths in real-time virtual environments. The proposed algorithm focus on addressing two problems: (1) the grid-based distance propagating for controlling of crowd paths. We propose a grid-based distance propagating algorithm for controlling of crowd paths, which requires no prior knowledge of crowd and obstacles. (2) the penalty function for collision-free. We propose using the penalty function to collision-free, which incorporates safety margins around obstacle using local information. Experimental results show that the proposed algorithm could be used for real-time navigation of many moving crowd in complicated virtual environments. © 2012 Binary Information Press.

关键词： virtual reality

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A blocked statistics method based on directional derivative

A blocked statistics method based on directional derivative

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2012 International Conference on Web Information Systems and Mining, WISM 2012

作者： Li, Junli Chu, Chengxi Li, Gang Lou, Yang Visual Computing and Virtual Reality Key Laboratory of Sichuan Province Sichuan Normal University Chengdu 610066 China Information Science and Engineering College Ningbo University Ningbo 315211 China

ISBN: (纸本)9783642334689

The basic idea of identifying the motion blurred direction using the directional derivative is that the original image be an isotropic first-order Markov random process. However, the real effect of this method is not always good. There are many reasons, of which the main is that a lot of pictures do not meet the physical premises. The shapes of objects and texture of pictures would be vulnerably influenced for identifying. In this paper, according to the image characteristics of the local variance, we extract multiple blocks and identify the motion directions of the blocks to identify the motion blurred direction. Experimental results show that our method not only improve the identification accuracy, but also reduce the amount of computation. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Markov processes

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Research and realization of distributed digital registration system for universities

Research and realization of distributed digital registration...

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2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012

作者： Liao, Xue-Hua Zhu, Zhou-Sen Wu, Zhen-Dong Yu, Xiao Institute of Computer Science Sichuan Normal University Chengdu Sichuan China Visual Computing and Virtual Reality Key Laboratory of Sichuan Province Chengdu Sichuan China Institute of Physics and Electronic Engineer Sichuan Normal University Chengdu Sichuan China

ISBN: (纸本)9780769546476

In response to the changes in the registration procedure at the universities, i.e. one university has several districts and different registration requirements;this paper proposes the distributed digital registration system that can be customized. We then elaborate on the design and realization method of the system. The university registration procedure is standardized with the use of this system, and the distributed data of related departments are integrated. It is confirmed that the system can operate in good conditions. © 2012 IEEE.

关键词： component Digital Registration Distributed System Process Customization

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Traffic accident reconstruction technology research and simulation realization

Traffic accident reconstruction technology research and simu...

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2012 IEEE Symposium on Electrical and Electronics Engineering, EEESYM 2012

作者： Liao, Xuehua Zhu, Zhousen Yan, Yusong Lv, Tao Visual Computing and Virtual Reality Key Laboratory of Sichuan Province Chengdu China Institute of Physics and Electronic Engineer Sichuan Normal University Chengdu China Institute of Computer Science Sichuan Normal University Chengdu China

ISBN: (纸本)9781467323659

Accident reconstruction is not only an important way for responsibility identification or cause analysis in traffic accident but also an important step in study on traffic safety improvement. In this work, a type of physical analysis and an assumption model for traffic accident reconstruction, together with their respective realization methods, were introduced and described;simulation technology in two-vehicle collision accident was investigated;2-Dimension impact calculation of velocity variations before and after collision was specifically given;computer simulation system was established to analyze and reconstruct impact velocities and vehicle behaviors according to data measured in accident scene;software application in practice was also briefly discussed. © 2012 IEEE.

关键词： virtual reality

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ON THE CONCENTRATION PROPERTIES FOR THE NONLINEAR SCHRDINGER EQUATION WITH A STARK POTENTIAL

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Acta Mathematica Scientia 2011年第5期31卷 1923-1938页

作者：朱世辉张健 Visual Computing and Virtual Reality Key Laboratory Sichuan Normal University College of Mathematics Sichuan University

In this paper, we study blow-up solutions of the Cauchy problem to the L2 critical nonlinear Schrdinger equation with a Stark potential. Using the variational characterization of the ground state for nonlinear Schrdinger equation without any potential, we obtain some concentration properties of blow-up solutions, including that the origin is the blow-up point of the radial blow-up solutions, the phenomenon of L2-concentration and rate of L2-concentration of blow-up solutions.

关键词： nonlinear Schrdinger equation blow-up solution blow-up point L2-concentration concentration compact principle

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Traffic accident reconstruction technology research and simulation realization

Traffic accident reconstruction technology research and simu...

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IEEE Symposium on Electrical & Electronics Engineering (EEESYM)

作者： Xuehua Liao Zhousen Zhu Yusong Yan Tao Lv 1. Visual Computing and Virtual Reality Key Laboratory of Sichuan Province 2. Institute of Computer Science of Sichuan Normal University Chengdu Sichuan China Institute of Physics and Electronic Engineer of Sichuan Normal University Chengdu Sichuan China Institute of Computer Science of Sichuan Normal University Chengdu Sichuan China

ISBN: (纸本)9781467323635

Accident reconstruction is not only an important way for responsibility identification or cause analysis in traffic accident but also an important step in study on traffic safety improvement. In this work, a type of physical analysis and an assumption model for traffic accident reconstruction, together with their respective realization methods, were introduced and described; simulation technology in two-vehicle collision accident was investigated; 2-Dimension impact calculation of velocity variations before and after collision was specifically given; computer simulation system was established to analyze and reconstruct impact velocities and vehicle behaviors according to data measured in accident scene; software application in practice was also briefly discussed.

关键词： Educational institutions

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