An agent-based approach for building complex software systems
Communications of the ACM
Ensuring consistency in the joint beliefs of interacting agents
AAMAS '03 Proceedings of the second international joint conference on Autonomous agents and multiagent systems
The Contract Net Protocol: High-Level Communication and Control in a Distributed Problem Solver
IEEE Transactions on Computers
Access control enforcement for conversation-based web services
Proceedings of the 15th international conference on World Wide Web
Automatic web services composition in trustaware communities
Proceedings of the 3rd ACM workshop on Secure web services
A Framework for Web service negotiation
ACM Transactions on Autonomous and Adaptive Systems (TAAS)
Computer Networks: The International Journal of Computer and Telecommunications Networking
Dynamic Execution of Coordination Protocols in Open and Distributed Multi-Agent Systems
KES-AMSTA '09 Proceedings of the Third KES International Symposium on Agent and Multi-Agent Systems: Technologies and Applications
Engineering deontic protocols by means of organizational Petri nets
Engineering Applications of Artificial Intelligence
An extended XACML model to ensure secure information access for web services
Journal of Systems and Software
Z-based agents for service oriented computing
AAMAS'07/SOCASE'07 Proceedings of the 2007 AAMAS international workshop and SOCASE 2007 conference on Service-oriented computing: agents, semantics, and engineering
Design of a SOA-oriented E-diagnostics system for hydroelectric generating sets
IEA/AIE'07 Proceedings of the 20th international conference on Industrial, engineering, and other applications of applied intelligent systems
A dynamic privacy model for web services
Computer Standards & Interfaces
A trust and context aware access control model for web services conversations
TrustBus'07 Proceedings of the 4th international conference on Trust, Privacy and Security in Digital Business
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Although web services aim to bring about seamless and effective communication in a wide variety of Internet applications, the interactions between them are currently limited to simple request-response exchanges. However, in the longer term we believe this is unsustainable. In particular, we believe that more complex protocols for web service conversations are necessary if the participants are to tailor their needs and offers to the prevailing context and they are to coordinate multiple services in open and realistic environments. To this end, this paper combines and extends two recent web service languages, WS-Conversation Language (WSCL) and WS-Agreement, in order to obtain a method for engineering protocols of sufficient expressiveness for the next generation of flexible and autonomous services. Specifically, we propose that the protocols include speech-acts as the individual messages and we show how to model such speech-acts as WS-Agreement schemas, which can, in turn, be imported into the specification of the protocols in WSCL. To demonstrate our approach, we express a standard contracting protocol in the extended WSCL/WS-Agreement languages. Furthermore, we use statechart notation as a visual counterpart to help developers write clients that flexibly interact with a service and to help users to better understand how to interact with a service. Finally, we show that the translation between statecharts and WSCL/WS-Agreement protocols is straightforward.