Abstract not found

Contents 1 Introduction 2 2 Interactive systems 2 2.1 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1.1 Overview development methods for interactive systems . . . . . . . . . 2 2.1.2 Prototyping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1.3 Techniques, tools, development environment, and management . . . . 2 2.2 Techniques per development stage . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2.1 Task analysis and global design specification . . . . . . . . . . . . . . 3 2.2.2 Detailed-design stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2.3 Scenario-based design . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2.4 Evaluation criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2.5 Evaluation techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Multi-agent systems 4 3.1 Agent systems and models . . . . . . . . . .

This text presents results of ongoing research, which is aimed at developing a framework for developing multimodal natural language dialogue systems operating within virtual environments. The aspects of multimodality and presence in a virtual environment are chosen as the main focus of this research. It may be argued that specification techniques would form the basis of such a framework. Therefore, a general overview and evaluation is given of existing specification techniques for interactive systems, based on both literature and previous research results. This includes the object-oriented model, process algebras, interactor models, and agent systems. Agent systems are further subdivided into intentional logics, production rule systems, agent communication languages, agent platforms, and agent architectures.

Agents which exist in a multi-agent environment and wish to cooperate must individually form plans which incorporate the actions of their fellow agents. In this paper we present an agent architecture which permits high-level adaptive plans to be formed and revised, based on perceptions of the actions of other agents in the environment. This is achieved through a belief revision system based on constraint satisfaction in which high level beliefs concerning the relationships between values, norms, and intentions are represented and manipulated.