Speakers’ perception of a visual scene influences the language they use to describe it—which objects they choose to mention and how they characterize the relationships between them. We show that visual complexity can either delay or facilitate description generation, depending on how much disambiguating information is required and how useful the scene's complexity can be in providing, for example, helpful landmarks. To do so, we measure speech onset times, eye gaze, and utterance content in a reference production experiment in which (...) the target object is either unique or non-unique in a visual scene of varying size and complexity. Speakers delay speech onset if the target object is non-unique and requires disambiguation, and we argue that this reflects the cost of deciding on a high-level strategy for describing it. The eye-tracking data demonstrate that these delays increase when speakers are able to conduct an extensive early visual search, implying that when speakers scan too little of the scene early on, they may decide to begin speaking before becoming aware that their description is underspecified. Speakers’ content choices reflect the visual makeup of the scene—the number of distractors present and the availability of useful landmarks. Our results highlight the complex role of visual perception in reference production, showing that speakers can make good use of complexity in ways that reflect their visual processing of the scene. (shrink)

The first issue of _Artificial Intelligence and Law_ journal was published in 1992. This paper discusses several topics that relate more naturally to groups of papers than a single paper published in the journal: ontologies, reasoning about evidence, the various contributions of Douglas Walton, and the practical application of the techniques of AI and Law.

v. 1. Opuscula logica, physica, allegorica, alia -- v. 2. Opuscula psychologica, theologica, daemonologica.

We provide a retrospective of 25 years of the International Conference on AI and Law, which was first held in 1987. Fifty papers have been selected from the thirteen conferences and each of them is described in a short subsection individually written by one of the 24 authors. These subsections attempt to place the paper discussed in the context of the development of AI and Law, while often offering some personal reactions and reflections. As a whole, the subsections build into (...) a history of the last quarter century of the field, and provide some insights into where it has come from, where it is now, and where it might go. (shrink)

Interiority and Law presents a groundbreaking reassessment of a medieval Jewish classic, Baḥya ibn Paquda's Guide to the Duties of the Hearts. Michaelis reads this work anew as a revolutionary intervention in Jewish law, or halakha. Overturning perceptions of Baḥya as the shaper of an ethical-religious form of life that exceeds halakha, Michaelis offers a pioneering historical and conceptual analysis of the category of "inner commandments" developed by Baḥya. Interiority and Law reveals that Baḥya's main effort revolved around establishing a (...) new legal formation - namely, the "duties of the hearts" - which would deal entirely with human interiority. Michaelis takes up the implications of Baḥya's radical innovation, examining his unique mystical model of proximity to God, which he based on an increasingly growing fulfillment of the inner commandments. With an integrative approach that puts Baḥya in dialogue with other medieval Muslim and Jewish religious thinkers, this work offers a fresh perspective on our understanding of the interconnectedness of the dynamic, neighboring religious traditions of Judaism and Islam. Contributing to conversations in the history of religion, Jewish studies, and medieval studies on interiority and mysticism, this book reveals Baḥya as a revolutionary and demanding thinker of Jewish law. (shrink)

Robert Nozick’s Anarchy, State and Utopia contains one of the earliest and best-known criticisms of John Rawls’s theory of justice in general and the difference principle in particular. The discussion of Nozick’s critique of Rawls in the literature has focused on his argument against “patterned” conceptions of justice, of which the difference principle as Nozick understands it constitutes merely one version among others. In this article I consider the objection Nozick raises against the difference principle specifically, namely that it unfairly (...) favors the “worse endowed” over the “better endowed” members of society. I argue that Nozick’s charge of unfairness against the difference principle is ambiguous between two distinct interpretations of the difference principle and as such divides into two distinct objections, the pre-cooperative and the cooperative fairness objection. I then argue that neither of these two interpretations of the difference principle represents the actual, Rawlsian difference principle accurately and that, more fundamentally, Nozick lacks the concept of politics as the distinctive moral category implicitly at work in Rawls’s theory of justice. Not as much of Nozick’s charge of unfairness against the difference principle therefore remains on reflection as may have appeared at first sight. (shrink)

The first issue of Artificial Intelligence and Law journal was published in 1992. This paper offers some commentaries on papers drawn from the Journal’s third decade. They indicate a major shift within Artificial Intelligence, both generally and in AI and Law: away from symbolic techniques to those based on Machine Learning approaches, especially those based on Natural Language texts rather than feature sets. Eight papers are discussed: two concern the management and use of documents available on the World Wide Web, (...) and six apply machine learning techniques to a variety of legal applications. (shrink)

This is a report on the Doctoral Consortium co-located with the 17th International Conference on Artificial Intelligence and Law in Montreal.

One of the few points of consensus in the Kantian literature is that Kant’s Moral Law is binding universally and unconditionally. Hence, the Moral Law is binding for all human agents (universally) irrespective of the agents’ particular interests (unconditionally). Whether or not we intend to act on the Moral Law, this is the law we ought to follow. Beyond this point of consensus, however, even the most important details are matters of controversy. What exactly does the Moral Law require of (...) us? What, if anything, grounds its bindingness? In particular, does Kant argue that the Moral Law is binding because it is ‘self-legislated’? What is the relation between the Moral Law (supreme principle of morality) and substantive moral laws such as the law that we ought to promote the happiness of others? What does Kant mean by his claim that the will has autonomy? In the four articles discussed in this special issue, Kleingeld proposes novel answers to these questions. This introduction presents the articles and brings to the fore the larger theme tying them all together. (shrink)

This book presents the current state of the art regarding the application of logical tools to the problems of theory and practice of lawmaking. It shows how contemporary logic may be useful in the analysis of legislation, legislative drafting and legal reasoning concerning different contexts of lawmaking. Elaborations of the process of lawmaking have variously emphasised its political, social or economic aspects. Yet despite strong interest in logical analyses of law, questions remains about the role of logical tools in lawmaking. (...) This volume attempts to bridge that gap, or at least to narrow it, drawing together some important research problems-and some possible solutions-as seen through the work of leading contemporary academics. The volume encompasses 20 chapters written by authors from 16 countries and it presents diversified views on the understanding of logic (from strict mathematical approaches to the informal, argumentative ones) and differentiated choices concerning the aspects of lawmaking taken into account. The book presents a broad set of perspectives, insights and results into the emerging field of research devoted to the logical analysis of the area of creation of law. How does logic inform lawmaking? Are legal systems consistent and complete? How can legal rules be represented by means of formal calculi and visualization techniques? Does the structure of statutes or of legal systems resemble the structure of deductive systems? What are the logical relations between the basic concepts of jurisprudence that constitute the system of law? How are theories of legal interpretation relevant to the process of legislation? How might the statutory text be analysed by means of contemporary computer programs? These and other questions, ranging from the theoretical to the immediately practical, are addressed in this definitive collection. (shrink)

The thesis of the paper holds that some future developments of argumentation theory may be inspired by the rich logico-methodological legacy of the Lvov–Warsaw School (LWS), the Polish research movement that was most active from 1895 to 1939. As a selection of ideas of the LWS which exploit both formal and pragmatic aspects of the force of argument, we present: Ajdukiewicz’s account of reasoning and inference, Bocheński’s analyses of superstitions or dogmas, and Frydman’s constructive approach to legal interpretation. This paper (...) does not aim at exhaustive elaboration of any of these topics or their usefulness in current discussions within argumentation theory. Rather, we intend to indicate chosen directions of a potentially fruitful research program for the emerging Polish School of Argumentation which would consist in application of methods and conceptions elaborated by the LWS to selected open problems of contemporary research on argumentation. (shrink)

In der Technikethik spielt das Konzept der Verantwortung eine zentrale Rolle. ›Verantwortung‹ ist ein Basiskonzept, das, ähnlich wie die Konzepte ›Pflicht‹ oder ›Schuld‹, in vielfältigen Kontexten gebraucht wird. Dennoch lassen sich einige allgemeine Aussagen über seine Bedeutung treffen. Gerade Autoren, die im Bereich der Technik- und Wissenschaftsethik aktiv sind, haben sich nachdrücklich um eine Klärung des allgemeinen Verantwortungsbegriffs und seiner verschiedenen Aspekte und Gebrauchsweisen bemüht.

Famously, David Lewis argued that we can avoid the apparent paradoxes of time travel by introducing a notion of personal time, which by and large follows the causal flow of the time traveler's life history. This paper argues that a related approach can be adapted for use by three-dimensionalists in response to Ted Sider's claim that three-dimensionalism is inconsistent with time travel. In contrast to Lewis (and others who follow him on this point), however, this paper argues that the order (...) of events captured by so-called "personal time" should be thought of as causal, rather than temporal. (shrink)

The book introduces a conception of discourse ethics, an intersubjectivist version of Kantian ethics. Analyzing contributions from Jürgen Habermas, Karl-Otto Apel, Wolfgang Kuhlmann, Albrecht Wellmer, Robert Alexy, Klaus Günther, Rainer Forst, Marcel Niquet and others, it reconstructs critical discussions on the justification of the principle of morality (part I) and on the various proposals on how to apply it (part II). It defends an alternative model of how discourse ethics can provide guidance under non-ideal circumstances and avoid both arbitrariness and (...) rigorism. (shrink)

The first issue of Artificial Intelligence and Law journal was published in 1992. This paper provides commentaries on nine significant papers drawn from the Journal’s second decade. Four of the papers relate to reasoning with legal cases, introducing contextual considerations, predicting outcomes on the basis of natural language descriptions of the cases, comparing different ways of representing cases, and formalising precedential reasoning. One introduces a method of analysing arguments that was to become very widely used in AI and Law, namely (...) argumentation schemes. Two relate to ontologies for the representation of legal concepts and two take advantage of the increasing availability of legal corpora in this decade, to automate document summarisation and for the mining of arguments. (shrink)

A history of logic -- Patterns of reasoning -- A language and its meaning -- A symbolic language -- 1850-1950 mathematical logic -- Modern symbolic logic -- Elements of set theory -- Sets, functions, relations -- Induction -- Turning machines -- Computability and decidability -- Propositional logic -- Syntax and proof systems -- Semantics of PL -- Soundness and completeness -- First order logic -- Syntax and proof systems of FOL -- Semantics of FOL -- More semantics -- Soundness and (...) completeness -- Why is first order logic "First Order"? (shrink)