Studies of Agent Composition Model of PSE-Bio Workflow

An agent is introduced into workflow management of PSE-Bio, and the agent composition model for workflow in Web service-based PSE is also proposed in this paper. In this model, workflow can cooperate with three kinds of autonomy agent which are interface agent, task agent and resource agent, so as to realize heterogeneous services integration and distributed task management based on intelligence and negotiation mechanism of agent. With this model, resource encapsulation and monitoring of service status can be implemented, the flexibility of workflow execution mode can be enhanced, and the self-determination of user to interact with workflow is improved. The workflow can be more adaptable to bioinformatics PSE in grid environment. The function modules, categorization and schedule strategy in this model are discussed. This model is implemented with protein interaction network search as an example.