Contract Net Protocol

About: Contract Net Protocol is a research topic. Over the lifetime, 606 publications have been published within this topic receiving 13729 citations.

A novel contract net negotiation model based on trust mechanism

Abstract: Traditional contract net protocols can simply and flexibly solve the negotiation problem of multi-agent system (MAS). But they canpsilat work very well within the large scale system environment and is ineffective to solve the multi-issue negotiation problem. This paper investigates the reputation contract net protocol (RCNP) and proposes a novel contract net negotiation model based on RCNP. The model synthesizes the previous trust information and the multi-issue negotiation information which can greatly reduce the computational cost introduced by the unnecessary negotiation processes. In order to demonstrate the advantages of the model, a set of experiments were carried out on the JATLite (Java agent template lite) platform. Experimental results indicate that the proposed model improved the performance of the MAS system and the accuracy of the trust evaluation of the negotiation process.

Contract net protocol using fuzzy case based reasoning

Abstract: This paper describes a new communication load reduction method ontask negotiation with Contract Net Protocol (CNP) in a multi-agent system. For coordination the agents, the CNP is widely used during the problem solving. But its performance degrades drastically when communicating agents and tasks increase. In order to overcome this problem, Fuzzy Case Based Reasoning (FCBR) is used in CNP, it can reduce the scope of competitors and communication load on task negotiation, make a distinct improvement to the efficiency. At the same time, in FCBR system a new cases maintaining method based on time-serial is proposed in order to ensure a better cooperation between agents and adapt to higher flexibility of system. Experimental results show the performance of the protocol based on FCBR improves significantly.

A Multi-Agent System Frame Model for Dynamic Integration

Abstract: Since low flexibility and non-dynamic problems exit in the process of software system integration, a multi-agent system frame model which introduces the agent techniques into system integration domain is proposed for problem solving. Based on the MAS frame model, independent software units are wrapped to agents, and their integration logic is described by the script language. Through explaining the file, the collaboration of multi-agent is under control. Dialogue expansion contract net protocol is used for the cooperation when agent cannot solve problems by itself. In order to achieve the aim of flexible and dynamic integration, new wrapped agents can be added into MAS dynamically and the edited script can be explained by the parser. Finally, the agent-based system integration tools is built upon this frame model, and an application of this model about the border and coast defense system is presented, which verifies the rationality, feasibility and efficiency.

The Smart grid scheduling based on contract net protocol with trust model

Abstract: Smart grid is the intelligent power grid, in which Scheduling system is the most important part. In this paper, we will introduce a new schedule system based on contract net protocol improved scheduling efficiency. As one of the most important coordination mechanism, contract net protocol (CNP) has been extensively studied in many areas, and many other techniques can also be used to improve the quality of decision. The new CNP is based on trust mechanism, that makes the system more efficient scheduling. Experimental results show that the initiators with trust model almost steadily get the best participants no matter the environment is honest-dominated or dishonest-dominated. Even in the dishonest-dominated environment, this approach gets better results and is proved valuable.