| 1. |
- Avatare, Anneli, et al.
(författare)
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The APS/AMID Project
- 1991
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 2. |
- Bosch, Jan
(författare)
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Paradigm, Language Model and Method
- 1994
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Programming languages and software engineering methods are highly related in that both are images of an underlying paradigm. In this paper we investigate the role of the paradigm, the language model and the software development method and define requirements on each of the three concepts. Subsequently, we describe the {\em layered object model}, an extended object model which allows for first-class representation of relations between objects and constraints on the behaviour of an object, and discuss how it achieves {\em paradigm extensibility}, i.e. extensibility of the paradigm and the supporting language model.
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| 3. |
- Bosch, Jan
(författare)
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Parser Delegation : An Object-Oriented Approach to Parsing
- 1994
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Conventional grammar specification and parsing is generally done in a monolithic manner, i.e. the syntax and semantics of a grammar are specified in one large specification. Although this might be sufficient in static environments, a modular approach is required in situations where the syntax or semantics of a grammar specification are subject to frequent changes. The problems with monolithic grammars are related to (1) dealing with the complexity, (2) extensibility and (3) reusability. We propose the concept of {\em parser delegation} as a solution to these problems. Parser delegation allows one to modularise and reuse grammar specifications. To achieve this, the notion of a production rule is specialised into (1) overriding, (2) extending and (3) delegating production rule types. To experiment with parser delegation, we have developed D-yacc, a graphical tool for defining grammars. Parser delegation has been applied for constructing a translator for an experimental language and is currently applied in other domains.
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| 4. |
- Bosch, Jan
(författare)
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Relations as Object Model Components
- 1994
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Although object-oriented methods make extensive use of relations between objects, these relations, other than inheritance and part-of, can not directly be represented by the conventional object-oriented model. This means that relations which are identified during analysis and design have to be implemented on top of the object model, i.e. by using method code and message passing, rather than by expressing relations directly within in the model. It would be beneficial if the object-oriented model would support the specification of all relevant types of relations within the model, including application-domain specific relation types. Therefore, we propose a mechanism, implemented in LayOM -- an extended object model, that supports the specification of all types of relations between objects within the model as components of the object model. In addition, an approach for identifying and specifying application-domain relation types is presented.
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| 5. |
- Bosch, Jan
(författare)
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Software Artifacts as Autonomous Agents
- 1994
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Rapport (refereegranskat)abstract
- In this paper, a number of problems of conventional automated software engineering support environments are described. These problems are related to the functional approach these environments take, the lack of initiative these systems exhibit and the causal connection gap between design information and the operational entity. As an alternative, we suggest an autonomous agent approach. Each artifact is modelled as an autonomous agent that is responsible for its own development. Artifacts are organised in specialisation hierarchies which can be traversed by agents. As a consequence, the methodology needs to be inverted, i.e. specified from the artifact's perspective rather than from the software engineer's perspective.
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| 6. |
- Gustavsson, Rune
(författare)
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Agent Oriented Software Engineering. A Motivation for and an Introduction to a Novel Approach to Modeling and Development of Open Distributed Systems
- 1994
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The purpose of this paper is to give a short motivation for and an introduction to a novel approach of how to view and develop flexible open distributed systems of the future. We propose that the emerging style of Agent Oriented Sofnyare Engineering (AOSE) has high potentials as a candidate for future models of system development. We indicate in this paper some recent and upcoming applications of AO-SE. Furthermore, we round off the paper by giving an overview of an ongoing project within an AOSE frame work, Societies of Computation (SoC) at the University of Karlskrona/Ronneby. We also give an overview of an experimental SoC-platform, developed together with Sydkraft AB, for applications in Intelligent Distribution Automation
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| 7. |
- Gustavsson, Rune, et al.
(författare)
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Societies of Computation. A Framework for Computing & Communication
- 1994
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Societies of Computation (SoC) is proposed as a frame work for design of real world complex systems involving computing and communication. The computational paradigm behind SoC is communities of rational agents. The framework has three components; Foundational research, Generic technologies and Applications.
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| 8. |
- Hägg, Staffan, et al.
(författare)
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An Architecture for Agent-Oriented Programming with a Programmable Model of Interaction
- 1994
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Rapport (refereegranskat)abstract
- Distributed computing, where the underlying network is complex, heterogeneous and un-reliable, is hard to realize with traditional approaches. Energy Distribution Automation (DA), where the power line is used for communication, and the processing is highly distributed, is our application domain for assessments of new technologies for this kind of system. In this paper we propose a Multi-Agent approach with a large expected number of heavily distributed, medium grain agents. The concept of Agent-Oriented Programming (AOP) is adopted, and an architecture, the DA-SoC, is developed. The language DAAL is used for pro-gramming the agents, and the most important feature is a novel programmable Model of Inter-action (MoI), which allows the user to tailor agent interaction and the social behaviour of agents in the society. The semantic addressing is a powerful abstraction mechanism, that facilitates run-time network management. The emphasis of the paper is on describing and analysing the architecture, the language and the programmable MoI. An example from the DA application domain illustrates how the DA-SoC can be used. The research reported here is a cooperation between the authors’ affiliations mentioned above, and it is a part of the larger projects, Intelligent Distribution Automation (IDA) at Syd-kraft, Malmoe, Sweden, and Societies of Computation (SoC) at the University of Karlskrona/Ronneby, Sweden.
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| 9. |
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| 10. |
- Hägg, Staffan, et al.
(författare)
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DA-SoC : A Testbed for Modelling Distribution Automation Applications Using Agent-Oriented Programming
- 1994
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Rapport (refereegranskat)abstract
- As computing systems are being applied to ever more demanding and complex domains, the infeasibility of constructing a single, monolithic problem solver becomes more apparent. Furthermore, important applications such as different types of management control systems for power generation and distribution are inherently distributed. A promising novel research direction to overcome complexity barriers in the design and maintenance of complex distributed applications is based on the view of such systems as societies of cooperating agents. In this paper we describe an agent oriented design for load man-agement in an automated power distribution system and a testbed for implementations of such systems. We also present an agent with some novel and important features. The research reported here is a cooperation between the authors’ affiliations mentioned above, and it is a part of the larger projects, Intelligent Distribution Automation (IDA) at Sydkraft, Sweden, and Societies of Computation (SoC) at the University of Karlskrona/Ronneby, Sweden.
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