Application Of MOGA In Conflict Resolution For Architecture Cooperative Design

Computer Supported Cooperative Work (CSCW) is a new technology, which syncretizes human's cooperation behavior mode and computer technology. It makes all members of a team complete a common work based on computer technologies. When CSCW is introduced to design area, it is Computer Supported Cooperative Design (CSCD). CSCD is an important domain of CSCW. CSCD is an important domain of CSCW. It studies how to organize and manage the work, the data and the design processes.In the process of the cooperative design, different design groups and experts have the different ideas and design objects about the products and the different knowledge background. And a mass of reciprocal restricts and influencing relations consist in various product parts, so the conflicts unavoidably occur in the process of the cooperative design. In order to make CSCD go on wheels and enhance the efficiency and the quality of the design, we need a valid tactic to resolve conflicts and coordinate the processes of product development.Multi-objective optimization genetic algorithm (MOGA) is a new powerful tool for multi-objective optimization problems, and it can directly weigh the balance among multiple objectives. It is being rapidly developed in recent years. Because of high efficiency and practicability, MOGA attaches more and more importance to the academe. On the basis of studying the conflicts in cooperative design and multi-objective optimization problem, we can regard the conflicts as multi-objective optimization problem. So MOGA is an effective method to resolve conflicts. MOGA is applied to resolve conflicts which is proposed in this paper. Conflict detection can help the designer to discover the existence of the conflict, and MOGA can coordinate the objects of designers in lots of domains to achieve integral optimization.Architecture cooperative design is a new-fashioned architecture design mode. Architecture cooperative design means that all members of a group work cooperatively by using computer-aided tool in a sharing environment to achieve architecture design on the internet. On the basis of studying the architecture cooperative design, we develop an architecture cooperative design system. Conventional architecture design adopts negotiation to resolve conflicts. We apply MOGA to resolve conflicts instead of conventional negotiation mode, and it can discover the conflict promptly and solve it. Experiment shows that the results are quite satisfied, and this method can ensure architecture cooperative design go on wheels. The resolving results are many non-dominated solutions, which are propitious for decision maker to make a correct decision .The tactic provides a new way of resolving conflicts.The main content of this paper is as follows:1.The excellent performance of NSGA-II is demonstrated in resolving a typical example about multi-objective optimization in this paper. The author summarizes the characteristic, the process and the conflicts of architecture cooperative design, and makes the mathematical description for the conflicts in architecture cooperative design.2.Construct a multi-objective optimization model for the conflicts in the cooperative design.On the basis of studying the conflicts in cooperative design and multi-objective optimization problem, this paper describes the conflicts in cooperative design as multi-objective optimization problems. On the basis of this model, we can construct multi-objective optimization model for a concrete conflict when we discover a conflict in actual cooperative design system.3.Bring forward a tactic for resolving conflicts based on MOGA.Bring forward a tactic for resolving conflicts based on MOGA in this paper, and NSGA-II which is an advanced multi-objective optimization genetic algorithms on an international scale is applied to resolve conflicts. We can detect conflicts effectively by using this tactic, and the flow and concrete realization methodology of this tactic is given.4.The tactic for resolving conflicts based on MOGA is applied to conflict resolution for architecture cooperative design.Implement an architectural cooperative design system. With Hoops/Net adopted as the main skeleton, and entity modeling engine ACIS utilized as the sculpt kernel, the system is designed on Windows XP platform with VC++.NET 2003. In addition, SQL Server 2000 is used as database system. The emphasis is placed on resolving conflicts. The example which shows how to apply the MOGA to resolve conflicts is given. The resolving results are quite satisfied which proves the tactic is effective. Non-dominated solutions can make the decision maker have a thorough knowledge of the distribution of non-dominated set, and it helps the decision maker make a better decision.