A Coherence Based Framework for Institutional Agents

Joseph, Sindhu; Sierra, Carles; Schorlemmer, Marco

doi:10.1007/978-3-540-79003-7_21

Cited by 3 publications

(7 citation statements)

References 11 publications

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“…Moving away from the purely utilitarian approach, Joseph et al . (2008) use the notion of coherence to evaluate a new norm for the purposes of deciding whether an agent should adopt a norm. In their approach, norms that are more coherent with existing norms and beliefs are evaluated more highly.…”

Section: Norm Evaluationmentioning

confidence: 99%

Engineering the emergence of norms: a review

Haynes¹,

Lück²,

McBurney³

et al. 2017

The Knowledge Engineering Review

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Complex systems often exhibit emergent behaviour, unexpected macro-level behaviour caused by the interaction of micro-level components. In multiagent systems, these micro-level components may be autonomous agents and the emergent behaviour may be expressed as norms -patterns of behaviour that arise among the agents in response to their environment and each other. These emergent norms may be beneficial (for example, by encouraging cooperative behaviour), or detrimental, but in either case it is useful to recognise these norms as they emerge and either encourage or discourage their establishment. We term this process engineering the emergence of norms and have identified three steps: the identification of a possible norm, evaluation of its benefit, and its encouragement (or discouragement). This paper is an attempt to provide a survey of existing research related to these steps. We also provide an analysis of the approaches based upon their suitability for a variety of normative systems: we examine the requirements for agents to have autonomy over their choice of norms, the degree of observability required in the system, and the norm enforcement methods. The paper concludes with an discussion of open issues.

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Section: Norm Evaluationmentioning

confidence: 99%

Engineering the emergence of norms: a review

Haynes¹,

Lück²,

McBurney³

et al. 2017

The Knowledge Engineering Review

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“…The framework, introduced by Joseph et al [14,13], is based on Thagard's formulation of the theory of coherence as maximising constraint satisfaction [21]. This theory is based on the assumption that pieces of information can be associated with each other, the association being either positive or negative.…”

Section: Coherence Frameworkmentioning

confidence: 99%

“…This theory is based on the assumption that pieces of information can be associated with each other, the association being either positive or negative. The framework of [14,13] differs from other coherence-based agent theories [6,16] as it modifies the way an agent framework is perceived by making the associations in the cognitions explicit in representation and analysis. That is, in this framework coherence is treated as a fundamental property of the mind of an agent.…”

Section: Coherence Frameworkmentioning

confidence: 99%

Coherence-driven argumentation to norm consensus

Joseph

Prakken

2009

Proceedings of the 12th International Conference on Artificial Intelligence and Law

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In this paper coherence-based models are proposed as an alternative to logic-based BDI and argumentation models for the reasoning of normative agents. A model is provided for how two coherence-based agents can deliberate on how to regulate a domain of interest. First a deductive coherence model presented, in which the coherence values are derived from the deduction relation of an underlying logic; this makes it possible to identify the reasons for why a proposition is accepted or rejected. Then it is shown how coherencedriven agents can generate candidate norms for deliberation, after which a dialogue protocol for such deliberations is proposed. The resulting model is compared to current logicbased argumentation systems for deliberation over action.

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“…On top of that, modal belief and norm operators are introduced to enable epistemic and deontic reasoning. Algorithms for computing coherence are described in a PhD Thesis (Joseph, 2010) and elsewhere (Joseph et al, 2008. In (Joseph, 2010) a reference to a Prolog implementation is given and it is claimed that this implementation has given good results for testing purposes.…”

mentioning

confidence: 99%

“…Joseph et al (Joseph, 2010;Joseph and Prakken, 2009;Joseph et al, 2008Joseph et al, , 2010) define a theory of coherence that is inspired on Thagard's work on coherence, but otherwise clearly deviates from it. The main difference with Thagard's work and ours is that nodes are no longer atomic propositions but may in fact be propositional formulas that are constituted from atoms and logical connectives.…”

mentioning

confidence: 99%

Extensions and modifications to explanatory coherence

Vreeswijk

2016

Law, Probability and Risk

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Thagard's theory of explanatory coherence (TEC) and its implementation ECHO might be considered as the de facto calculus of explanatory coherence. It is an elaborate framework to compare competing scientific theories. Recently, it has become apparent that TEC is also useful as a tool for the analysis of different scenarios in so-called sense-making systems. To this end, it is expedient to discuss a number of extensions and modifications to TEC. This article proposes a number of extensions and modifications to TEC in the context of sense-making systems. The following topics are discussed: input format, representation of false formulas, representation languages, relaxation methods, schemes of coherence, metaexplanations, scenarios, leaking hypotheses, knowledge acquisition, and contextual explanation. The discussion is detailed enough to carry through changes in existing sense-making systems.

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A Coherence Based Framework for Institutional Agents

Cited by 3 publications

References 11 publications

Engineering the emergence of norms: a review

Engineering the emergence of norms: a review

Coherence-driven argumentation to norm consensus

Extensions and modifications to explanatory coherence

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