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Strata of Intervenient Concepts in Normative Systems
Faculty of Law, University of Lund.
KTH, School of Information and Communication Technology (ICT), Computer and Systems Sciences, DSV.
2008 (English)In: Lecture notes in artificial intelligence, ISSN 0302-9743, Vol. 5076, 203-217 p.Article in journal (Refereed) Published
Abstract [en]

Writing a contract of a specific content is a ground for purchase, purchase is a ground for ownership, ownership is a ground for power to dispose. Also power to dispose is a consequence of ownership, ownership is a consequence of purchase. etc. The paper presents a continuation of the authors’ previous algebraic representation on ground - consequence chains in normative systems.The paper analyzes different kinds of “implicative closeness” between grounds and consequences in chains of legal concepts, in particular combinations of “weakest ground”, “strongest consequence” and “minimal joining”. The idea of a concept’s being intermediate between concepts of two different sorts is captured by the technical notion of “intervenient”, defined in terms of weakest ground and strongest consequence. A legal example concerning grounds and consequences of “ownership” and “trust” is used to illustrate the application of the formal theory.

Place, publisher, year, edition, pages
2008. Vol. 5076, 203-217 p.
Keyword [en]
Normative system, Legal concept, Intermediate concept, Intervenient, Weakest ground, Strongest consequence, Intervenient minimality, Ownership
National Category
Information Science
Identifiers
URN: urn:nbn:se:kth:diva-9622DOI: 10.1007/978-3-540-70525-3_16ISI: 000257946600016Scopus ID: 2-s2.0-48949098215OAI: oai:DiVA.org:kth-9622DiVA: diva2:126747
Note
QC 20100901. Ingår i 9th International Conference on Deontic Logic in Computer Science, DEON 2008.Available from: 2008-11-20 Created: 2008-11-20 Last updated: 2010-09-01Bibliographically approved
In thesis
1. Many-Sorted Implicative Conceptual Systems
Open this publication in new window or tab >>Many-Sorted Implicative Conceptual Systems
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

A theory of many-sorted implicative conceptual systems (abbreviated msic-systems) is presented. Examples of msic-systems include legal systems, normative systems, systems of rules and instructions, and systems expressing policies and various kinds of scientific theories. In computer science, msic-systems can be used in, for instance, legal information systems, decision support systems, and multi-agent systems. In the thesis, msic-systems are studied from a logical and algebraic perspective aiming at clarifying their structure and developing effective methods for representing them. Of special interest are the most narrow links or joinings between different strata in a system, that is between subsystems of different sorts of concepts, and the intermediate concepts intervening between such strata. Special emphasis is put on normative systems, and the role that intermediate concepts play in such systems, with an eye on knowledge representation issues. Normative concepts are constructed out of descriptive concepts using operators based on the Kanger-Lindahl theory of normative positions. An abstract architecture for a norm-regulated multi-agent system is suggested, containing a scheme for how normative positions will restrict the set of actions that the agents are permitted to choose from. Technical results inlude a characterization of an msic-system in terms of the most narrow joinings between different strata, characterization of the structure of the most narrow joinings between two strata, conditions for the extendability of intermediate concepts, and finally, a specification of the conditions such that the Boolean operations on intermediate concepts will result in intermediate concepts and characterization of most narrow joinings in terms of weakest grounds and strongest consequences.

Place, publisher, year, edition, pages
Stockholm: Department of Computer and Systems Sciences, Royal Institute of Technology, 2008. xiv, 61 p.
Series
Report series / Department of Computer & Systems Sciences, ISSN 1101-8526 ; 08-012
National Category
Information Science
Identifiers
urn:nbn:se:hig:diva-3967 (URN)978-91-7415-141-1 (ISBN)
Public defence
2008-12-03, Hall C,KTH-Forum, Isafjordsgatan 39, Kista, 13:00 (Swedish)
Opponent
Supervisors
Note
Teknologie doktorsexamenAvailable from: 2009-03-19 Created: 2009-03-18 Last updated: 2009-05-08Bibliographically approved
2. Many-Sorted Implicative Conceptual Systems
Open this publication in new window or tab >>Many-Sorted Implicative Conceptual Systems
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

A theory of many-sorted implicative conceptual systems (abbreviated msic-systems) is presented. Examples of msic-systems include legal systems, normative systems, systems of rules and instructions, and systems expressing policies and various kinds of scientific theories. In computer science, msic-systems can be used in, for instance, legal information systems, decision support systems, and multi-agent systems. In the thesis, msic-systems are studied from a logical and algebraic perspective aiming at clarifying their structure and developing effective methods for representing them. Of special interest are the most narrow links or joinings between different strata in a system, that is between subsystems of different sorts of concepts, and the intermediate concepts intervening between such strata. Special emphasis is put on normative systems, and the role that intermediate concepts play in such systems, with an eye on knowledge representation issues. Normative concepts are constructed out of descriptive concepts using operators based on the Kanger-Lindahl theory of normative positions. An abstract architecture for a norm-regulated multi-agent system is suggested, containing a scheme for how normative positions will restrict the set of actions that the agents are permitted to choose from. Technical results inlude a characterization of an msic-system in terms of the most narrow joinings between different strata, characterization of the structure of the most narrow joinings between two strata, conditions for the extendability of intermediate concepts, and finally, a specification of the conditions such that the Boolean operations on intermediate concepts will result in intermediate concepts and characterization of most narrow joinings in terms of weakest grounds and strongest consequences.

Place, publisher, year, edition, pages
Stockholm: KTH, 2008. xiv, 61 p.
Series
Report series / DSV, ISSN 1101-8526 ; 08-012
National Category
Information Science
Identifiers
urn:nbn:se:kth:diva-9624 (URN)978-91-7415-141-1 (ISBN)
Public defence
2008-12-03, Hall C, KTH-Forum, Isafjordsgatan 39, Kista, 13:00 (English)
Opponent
Supervisors
Note
QC 20100901Available from: 2009-01-26 Created: 2008-11-20 Last updated: 2010-09-01Bibliographically approved

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