Abs t r ac t . This paper describes how a proven planning technique can be employed within a structured approach to knowledge based system development (KADS), via the definition of a mode! of expertise. This paper proposes a KADS model of expertise for hierarchical skeletal plan refinement. This model is based on a conceptual analysis by Kiihn and Schrnalhofer (1992) of skeletal planning as des...

Traditional approaches to building intelligent information systems employ an object model to define a representational structure for the information of interest within the target domain of the system. At runtime, the model provides a constrained template for the creation of the individual object instances and relationships that together define the state of the system at a given point in time. T...

This paper presents the results of a comprehensive empirical study of the impact of integrating complex game characters in multi-player Role Playing Games across tabletop and digital formats. Players were provided with characters that had detailed background history, personality and goals. Player and character personality were assessed using the Extended Personal Attributes Questionnaire (EPAQ)...

The purpose of this study was to examine the impact of a problem-based hypermedia learning environment on sixth graders’ performance and attitudes. We were interested in finding the ways hypermedia technology could be used as cognitive tools to share the responsibilities of teachers to provide necessary scaffolding to support students’ learning in a problem-based learning (PBL) environment. Of ...

In recent years, research on IT usage has increasingly focused on post-adoption usage, rather than initial acceptance of a technology regarded as new. Consistent with this recent trend, we seek to understand what factors influence employees’ ongoing IT use and processes they rely on for expanding their knowledge and skills within organizational workgroups. Based on recommendations by Jasperson,...

Reasoning about multi-agents systems at the knowledge level allows us to abstract away from many concrete details of the systems we are considering. Fagin et al. introduced two notions to facilitate designing and reasoning about systems in terms of knowledge. The first notion is that of knowledge-basedprograms. Knowledge-based programs are defined as syntactic objects: programs with tests for k...

As the first A A A I presidential address, this paper focuses o n a basic substantive problem: the nature of knowledge and representation. There are ample indications that artificial intell igence is in need of substantial work in this area, eg, a recent S I G A R T special issue on Knowledge Representation edited by Ron Brachman and Brian Smith. T h e paper proposes a theory of the nature of k...

This report presents a toolkit for automatic analysis and visualization of software written in NUT. This work is a continuation of the research described in TRITA-IT R 95:16; KTH/IT/R-95/16-SE. It uses the set of reflective functions for analysis of classes developed in the latter. The main part of the report is a description of the automatic layout algorithm which guarantees good quality of au...

In this paper we try to answer the following questions: Is it possible to program solely at the level of an agent communication language? If this is the case, ii) what requirements and conditions need to be taken into account? We argue that, although a number of languages defining abstract communication primitives have been proposed in the past few years, knowledge-level programming can only be...