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UML as a Modeling Tool for Developing an Agent-based Auction System Arnold Aribowo ( Department of Computer Engineering, Pelita Harapan University, Indonesia ) Maria Indrawan ( CSSE, Monash University, Australia ). Outline. Buying Model Negotiation Types UML Notations

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Outline

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  1. UML as a Modeling Tool for Developing an Agent-basedAuction SystemArnold Aribowo(Department of Computer Engineering, Pelita Harapan University, Indonesia)Maria Indrawan(CSSE, Monash University, Australia)

  2. Outline • Buying Model • Negotiation Types • UML Notations • UML Activity diagrams for Auction Protocol • Conclusion and future works

  3. negotiation Product identification Product selection Buying Model prepurchase Product consummation Payment authorization Product delivery Order placement Post purchase After sales services

  4. Negotiation Types • Distributive Negotiation (win-lose) • One issue is negotiated. • Parties involved have opposing interests. • Agreement does not need to satisfy joint gains for both parties. • Integrative Negotiation (win-win) • Multiple issues are negotiated. • Parties involved have different preferences towards these issues. • Agreement need to satisfy joint gains for both parties.

  5. Integrative vs Distributive

  6. Type of Auctions • English Auction • open cry auction • Sealed-bid Auction • single round or multiple rounds • Dutch Auction

  7. What is Agent? • Dictionary: • Latin ‘agans” -> to act • the producer of an effect, an active substance, a person or thing that performs an action, a representative, etc. • Common characteristics: • perform some task on our behalf (action) • has responsibility • access to some of our resources • proactive/reactive

  8. There are two roles in Agent based Auction System: • Buying Agent. • Selling Agent. • These agents needs to interact and exchange information. • Pre-defined set of rules during this communication process protocol Agent-based Auction Systems

  9. UML to Model Agent Protocol in an Auction System • UML has been proved to facilitate many software developers to express and exchange the idea about the design and specification of the software systems. • The wide acceptance of UML as a modeling tools. • The existing elements are sufficient in modelling agent-based auction systems.

  10. UML Activity Diagram Notations (1) • Initial and final states • Action state • Transition

  11. UML Activity Diagram Notations (2) • Decision • Fork and Join

  12. UML Activity Diagram Notations (3) • Swimlanes

  13. English Auction

  14. Single Round Sealed Bid Auction

  15. Multiple Round Sealed Bid Auction

  16. Dutch Auction

  17. Conclusion • UML has the ability on modelling agent interactions. • The interactions modelled: • the flow of messages during the auction process. • the expected actions in different states of the auctions. • Future works: • defining the message format • mapping the message into an existing Agent Communication Languages, such as FIPA ACL.

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