Research On Risk Evaluation In Development Of Virtual Software Project

Virtual software project has already been a common form of software development. In this kind of project, the communication between team members would be achieved through the Internet and modern means of communication. Compared to traditional projects, virtual software project is more flexible. It can, at the lowest flexible cost, make a quick reflection on the external demand and realize resource allocation in the larger scope. While the complexity and difficulty of the project have also increased hence more risk. Therefore, we have to find out risk factors and the main sources of the risk during the development process of virtual software project. Moreover, we need to evaluate the risk accurately according to the features of the software project.Under the guide of the above issues, this paper first reviewed and analyzed status quo at home and abroad, and pointed out some issues needed to be resolved in recent research; What's more, as for the project risk, this paper analyzed the characteristic of the project, relationship between project objectives, characteristics of software project and its model during its development step by step. Thus it can be seen software risk occurred frequently.And the thesis also describes the risk identification and risk assessment method and process which have been conducted be a comparative analysis;Thirdly, this paper analyzed the characteristic of the virtual software project, operation mode and organization structure, and discussed source of risk from the perspective of virtualization. The 53 risk factors were given by combining inquisitional data.Fourthly, conducted a comprehensive statistics to virtual software project through a questionnaire, and induced, classified, summarize the results of the questionnaire. After the processing to sample data via the application of factor analysis, an evaluation system included six categories of risk had been refined, and the system provided a theory foundation to risk assessment. Fifthly, as for risk assessment method, this paper improved the multi-objective comprehensive assessment model based on triangle fuzzy function. It set the schedule, cost and performance as the evaluation objective. And the comprehensive risk of project can be calculated in terms of clients and customers' different requirements to schedule, cost and performance. Trapezoid de-fuzzy arithmetic was been used, which reduced the amount of calculation, and this method was verified in the practical application. Sixthly, this thesis established multi-stage dynamic fuzzy evaluation model, which introduces Schedule Performed Index and Cost Performed Index to denote the cost and progress of the project according to the principle of earned value method. Then, verify the result of risk assessment via the two indexes, and a practical example is given to illustrate feasibility and validity. Seventhly, risk assessment system based on Web had been developed via B/S mode. This system has strong features in interaction and versatility, which provide an online risk assessment stage for virtual software project. At last, this paper pointed the further research content in this field.