Metodologia: I Star Exemplo: Expert Committee

Transcrição

1 Metodologia: I Star Exemplo: Expert Committee Disciplina: Engenharia de Requisitos Disciplina: Introdução a Engenharia de Software de Sistemas Multi-Agentes Antonio de Pádua Albuquerque Oliveira padua@inf.puc-rio.br Eduardo Magno Lages Figueiredo emagno@inf.puc-rio.br DI / PUC-Rio

2 Conteúdo 1) Motivação e conceituação básica 2) Conceitos da i* a) Conceitos básicos b) The Strategic Dependency Model c) The Strategic Rationale Model 3) Exemplo - Expert Committee 4) Bibliografia

3 But why Agent Orientation? The world (application environment) has become more distributed, autonomous, networked I.e. the agent properties are being found in the world. E.g. E-commerce, e-health, e-learning, groupwork, kn mgt Question is: how to make the software systems meet these desired properties (in the world) That s the job of RE (and SE). But previously, no way of expressing these properties. RE languages need to be social, intentional. Most AOSE methodologies focus the system, not on relationship to the world Eric Yu

4 Agent-Oriented Software Situated sense the environment and perform actions that change the environment Autonomous have control over their own actions and internal states can act without direct intervention from humans Flexible responsive to changes in environment, goal-oriented, opportunistic, take initiatives Social interact with other artificial agents and humans to complete their tasks and help others Jennings, Sycara, Wooldridge (1998) A Roadmap of Agent Research & Development. Autonomous Agents & Multi-Agent Systems journal.

5 Modelling Strategic Actor Relationships and Rationales - the i* modelling framework 1. Have goals, beliefs, abilities, commitments. 2. Depend on each other for: goals to be achieved, tasks to be performed, resources to be furnished; are semi-autonomous -- not fully knowable / controllable. Eric Yu

6 Relacionamento de Dependência Estratégica Representação de desejos e habilidades eu quero... eu posso... Chair D Articles BeReviewed D Reviewer ator1 ator2

7 i* modeling - objectives, premises, key concepts explicit intentionality goals functional decomposition means-ends alternatives implicit intentionality agents inputs outputs D wants and abilities D

8 Conteúdo

9 Os passos seguidos: 1. Identificar os atores no ambiente. 2. Modelar as interdependências entre os atores. Feito através do modelo Strategic Dependency (SD). 3. Modelar, para cada ator, a internal rationale. Feito através do modelo Strategic Rationale (SR) para expressar os relacionamentos intencionais internos. Goals, tasks, resources e softgoals aparecem como elementos intencionais dentro da linha de fronteira do ator (dot-dashed circle) no modelo SR. Elementos internos são conectados por links intencionais (means-ends, decomposition, and contribution).

10 Strategic Dependency (SD) model

11 SR model Autor & Chair

12 SR model Coordenador & Chair

13 SR model Membro CP & Chair

14 SR model Revisor & Chair

15 Bibliografia (provisória): Castro, J.; Kolp, M.; Mylopoulos, J. (2002) "Towards Requirements-Driven Information Systems Engineering: The Tropos Project." In: The 13th international conference on advanced information systems engineering, Oxford: Elsevier Science Ltd, v.27, n.6. p E. Yu, Agent-Oriented Modelling: Software Versus the World In Agent- Oriented Software Engineering AOSE-2001 Workshop Proceedings, Montreal, Canada - May 29th LNCS E. Yu, Towards Modeling ad Reasoning Support for Early-Phase Requirements Engineering, Proceedings of the 3rd IEEE International Symposium on Requirements Engineering, Washington D.C., USA, Jan. 1997, pp Mulopoulos, J., Kolps, M., Casro, J. (2001) "UML for Agent-Oriented Software Development: the Tropos Proposal." In: Proceedings of the Fourth International Conference on the Unified Modeling Language, Canada. Paolo Bresciani, Anna Perini, Paolo Giorgini, Fausto Giunchiglia, J. Mylopoulos, Tropos: An Agent-Oriented Software Development Methodology,, In: Journal of Autonomous Agents and Multi-Agent Systems, v:8, i:3, pp , Zheng You, Julio Cesar Leite, Eric Yu, An Assessment of i* Modeling and Evaluation Using the London Ambulance Service Case Study, Department of Computer Science, University of Toronto.