Agent oriented programming: An overview of the framework and summary of recent research

This is a short overview of the agent-oriented programming (AOP) framework. AOP can be viewed as an specialization of object-oriented programming. The state of an agent consists of components called beliefs, choices, capabilities, commitments, and possibly others; for this reason the state of an agent is called its mental state. The mental state of agents is captured formally in an extension of standard epistemic logics: beside temporalizing the knowledge and belief operators, AOP introduces operators for commitment, choice and capability. Agents are controlled by agent programs, which include primitives for communicating with other agents. In the spirit of speech-act theory, each communication primitive is of a certain type: informing, requesting, offering, etc. This document describes these features in more detail and summarizes recent results and ongoing AOP-related work

The organisation of sociality: a manifesto for a new science of multi-agent systems

In this paper, we pose and motivate a challenge, namely the need for a new science of multi-agent systems. We propose that this new science should be grounded, theoretically on a richer conception of sociality, and methodologically on the extensive use of computational modelling for real-world applications and social simulations. Here, the steps we set forth towards meeting that challenge are mainly theoretical. In this respect, we provide a new model of multi-agent systems that reflects a fully explicated conception of cognition, both at the individual and the collective level. Finally, the mechanisms and principles underpinning the model will be examined with particular emphasis on the contributions provided by contemporary organisation theory

The *subjectivity* of subjective experience - A representationalist analysis of the first-person perspective

This is a brief and accessible English summary of the "Self-model Theory of Subjectivity" (SMT), which is only available as German book in this archive. It introduces two new theoretical entities, the "phenomenal self-model" (PSM) and the "phenomenal model of the intentionality-relation" PMIR. A representationalist analysis of the phenomenal first-person persepctive is offered. This is a revised version, including two pictures

Discrete Entailment-Based Linking and -EE Nouns in English

Barker (1998) argues that since the referent of an -ee noun can be an indirect object, a direct object, a prepositional object, or a subject, -ee nouns cannot be described as a syntactic natural class. Portero Muñoz (2003) concurs and offers a semantic analysis based on Logical Structure (LS) in the framework of Role and Reference Grammar (RRG). This article proposes that RRG's macroroles (Actor and Undergoer) can be derived with two entailments and without any need for LS. Its analysis improves Portero Muñoz's, presenting additional evidence that subjects that allow -ee noun formation are Undergoers. It also explains why most -ee nouns are direct objects in spite of the fact that the suffix originated as a referent for indirect objects. Finally, it offers an explanation for nouns like amputee, pluckee, twistee, benefactee, malefactee, biographee, catapultee, razee, standee, attendee

The Roles of Thematic Knowledge in Sentence Comprehension

People possess a great deal of knowledge concerning what commonly happens in various types of events. This knowledge, specifically with respect to event participants and their relations within an event (thematic knowledge), is an important component of how people understand language. A number of studies have shown a rapid influence of thematic knowledge during moment-to-moment sentence processing, in both investigations of lexical processing in sentential contexts, and temporary syntactic ambiguity resolution. The main goal of this dissertation is to further our understanding about the roles of thematic knowledge during sentence processing and sentence understanding by examining two critical unresolved issues. Chapter 2 investigated whether manipulation of thematic knowledge can lead to processing disruption in sentences that are otherwise assumed to be free of processing difficulty. That is, I investigated whether simple sentences can be made more difficult. This issue is particularly important for adjudicating among two major theories of sentence comprehension, two-stage and constraint-based theories. I found that main clause sentences could be made more difficult by manipulating thematic fit of the initial noun phrase, as in The host invited versus The guest invited. Because the influence of thematic fit was found at the earliest point at which it could be expected, the results strongly support constraint-based models. Chapter 3 investigated how thematic knowledge affects the construction of sentential meaning representations, and how misinterpretations can occur during that process. Specifically, the study evaluated several possibilities regarding how misanalyses of thematic roles might occur in full passive sentences that varied in plausibility. Participants’ understanding was determined by asking them to recall the agent or patient of each target sentence. The novel aspects of this study involved in-depth analyses of the types of errors that participants make, and using ERPs to investigate on-line processing differences. A major result was that the N400 ERP component was smaller for trials on which participants made an error versus when they responded correctly, indicating that errors occurred when readers were not sensitive to thematic implausibility. In summary, the studies reported in this dissertation provide novel and important theoretical insights into thematic role processing during sentence comprehension

A theoretical framework for computer models of cooperative dialogue, acknowledging multi-agent conflict

This thesis describes a theoretical framework for modelling cooperative dialogue. The linguistic theory is a version of speech act theory adopted from Cohen and Levesque, in which dialogue utterances are generated and interpreted pragmatically in the context of a theory of rational interaction. The latter is expressed as explicitly and formally represented principles of rational agenthood and cooperative interaction. The focus is the development of strategic principles of multi-agent interaction as such a basis for cooperative dialogue. In contrast to the majority of existing work, these acknowledge the Positive role of conflict to multi-agent cooperation. and make no assumptions regarding the benevolence and sincerity of agents. The result is a framework wherein agents can resolve conflicts by negotiation. It is a preliminary stage to the future building of computer models of cooperative dialogue for both HCI and DAI, which will therefore be more widely and generally applicable than those currently in existence. The theory of conflict and cooperation is expressed in the different patterns of mental states which characterise multi-agent conflict, cooperation and indifference as three alternative postural relations. Agents can recognise and potentially create these. Dialogue actions are the strategic tools with which mental states can be manipulated, whilst acknowledging that agents are autonomous over their mental states; they have control over what they acquire and reveal in dialogue. Strategic principles of belief and goal adoption are described in terms of the relationships between autonomous agents' beliefs, goals, preferences, and interests, and the relation of these to action. Veracity, mendacity, concealing and revealing are defined as properties of acts. The role of all these elements in reasoning about dialogue action and conflict resolution, is tester in analyses of two example dialogues; a record of a real trade union negotiation and an extract from "Othello" by Shakespeare

From SMART to agent systems development

In order for agent-oriented software engineering to prove effective it must use principled notions of agents and enabling specification and reasoning, while still considering routes to practical implementation. This paper deals with the issue of individual agent specification and construction, departing from the conceptual basis provided by the SMART agent framework. SMART offers a descriptive specification of an agent architecture but omits consideration of issues relating to construction and control. In response, we introduce two new views to complement SMART: a behavioural specification and a structural specification which, together, determine the components that make up an agent, and how they operate. In this way, we move from abstract agent system specification to practical implementation. These three aspects are combined to create an agent construction model, actSMART, which is then used to define the AgentSpeak(L) architecture in order to illustrate the application of actSMART

Can models of agents be transferred between different areas?

One of the main reasons for the sustained activity and interest in the field of agent-based systems, apart from the obvious recognition of its value as a natural and intuitive way of understanding the world, is its reach into very many different and distinct fields of investigation. Indeed, the notions of agents and multi-agent systems are relevant to fields ranging from economics to robotics, in contributing to the foundations of the field, being influenced by ongoing research, and in providing many domains of application. While these various disciplines constitute a rich and diverse environment for agent research, the way in which they may have been linked by it is a much less considered issue. The purpose of this panel was to examine just this concern, in the relationships between different areas that have resulted from agent research. Informed by the experience of the participants in the areas of robotics, social simulation, economics, computer science and artificial intelligence, the discussion was lively and sometimes heated

Social Influence and the Generation of Joint Mental Attitudes in Multi-agent Systems

This work examines the social structural and cognitive foundations of joint mental attitudes in complexly differentated multi-agent systems, and incorporates insights from a variety of disciplines, including mainstream Distributed Artificial Intelligence, sociology, administrative science, social psychology, and organisational perspectives. At the heart of this work lies the understanding of the on-going processes by which socially and cognitively differentiated agents come to be socially and cognitively integrated. Here we claim that such understanding rests on the consideration of the nature of the influence processes that affect socialisation intensity. To this end, we provide a logic-based computational model of social influence and we undertake a set of virtual experiments to investigate whether and to what extent this process, when it is played out in a system of negotiating agents, results in a modification of the agents' mental attitudes and impacts on negotiation performance

Meeting Trees Halfway: Environmental Encounters in Theatre and Performance

abstract: How do trees (live and representational) participate in our theatrical and performed encounters with them? If trees are not inherently scenic, as their treatment in language and on stage might reinforce, how can they be retheorized as agents and participants in dramatic encounters? Using Diana Taylor’s theory of scenario to understand embodied encounters, I propose an alternative approach to understanding environmental beings (like trees) called “synercentrism,” which takes as its central tenet the active, if not 100 percent “willed,” participation of both human and non-human beings. I begin by mapping a continuum from objecthood to agenthood to trace the different ways that plants and trees are used, represented, and included in our encounters. The continuum provides a framework that more comprehensively unpacks human-plant relationships. My dissertation addresses the rich variety of representations and embodiments by focusing on three central chapter topics: the history of tree representation and inclusion in dramatic literature and performance; interactions with living trees in gardens, parks, and other dramatic arenas; and individual plays and plants that have a particularly strong grasp on cultural imaginaries. Each chapter is followed by one or more corresponding case studies (the first chapter is followed by case studies on plants in musical theatre; the second on performing plants and collaborative performance events; and the last on the dance drama Memory Rings and the Methuselah tree). I conclude with a discussion of how the framework of synercentrism can aid in the disruption of terministic screens and facilitate reciprocal relationships with trees and other environmental agents.Dissertation/ThesisDoctoral Dissertation Theatre 201