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.

Multi-time scale microgrid energy optimizing management system structure and method

Abstract: The invention relates to a multi-time scale microgrid energy optimizing management system structure and method. The system adopts an MAS (Mobile Agent Server) system framework which comprises a plurality of distributive power agents (Agent), a plurality of distributive power Agents, a plurality of demand response agents (Agent), a plurality of user Agents and a main electric grid dispatching Agents, wherein the Agents are collaborated and coordinated with an MAS system served as a frame based on the real-time capacity of a dynamic contract net protocol and ultra-short-term microgrid energy optimization; in case an important even that the Agents are triggered via an electric grid, the Agents are internally collaborated and collaborated with different Agents based on a set contract net coordination strategy, so as to ensure a microgrid system can run in an optimal mode under the rules of safety and speed. By adopting the structure and method provided by the invention, the gaps of the distributive power generation caused by the intermittency and the discontinuity can be filled, the robustness of the system can be improved, the response time can be reduced, the environmental benefit can be ensured as well as the economy of the electric grid in a full running period.

Reducing Communication Load on Contract Net by Case-Based Reasoning -- Extension with Directed Contract and Forgetting --

Abstract: This paper describes the communication load reduction on the task negotiation with Cont.rart Net Protor~d for multiph: autonomou~ lnobilc robots. Wc have dcvek)pe(l LEMMING. a task negotiation system with low ~xmnmtnication load for nmltiple atttonomolts mobile robots. For controlling multiple robots, Contract Net Protocol(CNP) is useful, but the broadcast of the Task Announcement messages on CNP tends to consnnic lnltdl comnnmicatitm load. In ordcr to overcome this probhun LEMMIN(; learns proper addressees for the Task Announct,nlcnt message.s with Case-Ba.~ed Rcasoning(CBl’t) so as to suppress the broadcast. The learning method is called Addrrssee Learning. In this paper, we extend LEMMING with "dirertcd contract" to r~lucc the communication load more cffectivcly. Moreover. wc extend LEMMING with "forgetting" to restrict the munbex of cases, sillcc it is impossible to have enough memory to keep MI the cases. The efficiency of LEMMI.NG is cvaluated in a silmtlated multi-robot environment to show that these extensions arc effec.tive for LEMMI.~e;.

Distributed information fusion agents

Abstract: Information fusion is typically data driven and applied to adversarial contexts. Advantages of a goal driven fusion process are emerging. An agent approach to fusion applied to friendly contexts, such as logistics, is presented. Agents are suitable for fusion because they can represent autonomous fusion eritities by modelling their capabilities, expertise and intentions. This paper promotes a level 3 centric view of information fusion, and focuses on impact and situation fusion. Extended Contract Net Protocol (ECNP) provides a distributed fusion approach, but has its shortfalls for the fusion domain. Provisional Agreement Prorocol (PAP) is an extension of the ECNP. It allows backtracking and a deliberative approach to fusion. Details of PAP are presented. © 2003 ISlF.

Protocol synthesis and re-synthesis with optimal allocation of resources based on extended petri nets

Abstract: Protocol synthesis is used to derive a protocol specification, that is, the specification of a set of application components running in a distributed system of networked computers, from a specification of services (called the service specification) to be provided by the distributed application to its users. Protocol synthesis reduces design costs and errors by specifying the message exchanges between the application components, as defined by the protocol specification. In general, maintaining such a distributed application involves applying frequent minor modifications to the service specification due to changes in the user requirements. Deriving the protocol specification after each modification using the existing synthesis methods is considered expensive and time consuming. Moreover, we cannot identify what changes we should make to the protocol specification in correspondence to the changes in the service specification, in this paper, we present a new synthesis method to re-synthesize only those parts of the protocol specification that must be modified in order to satisfy the changes in the service specification. The method consists of a set of simple rules that are applied to the protocol specification written in an extended Petri net model. An application example is given along with some experimental results.

Correction to "The Contract Net Protocol: High-Level Communication and Control in a Distributed Problem Solver"

Abstract: For the above-named paper (ibid., vol. C-29, pp. 1104-1113, December 1980), lines 21 and 22 of Fig. 5 on p. 1111 are corrected.