Efficient minimal preference change

In this article, we study a minimal change approach to preference dynamics. We treat a set of preferences as a special kind of theory, and define minimal change preference contraction and revision operations in the spirit of the Alchourrón, Gärdenfors, and Makinson theory of belief revision. We characterise minimal contraction of preference sets by a set of postulates and prove a representation theorem. We also give a linear time algorithm which implements minimal contraction by a single preference. We then define minimal contraction by a set of preferences, and show that the problem of a minimal contraction by a set of preferences is NP-hard

Ten-Year History of Social Network Logics in China

The paper presents a ten-year history of social network logics in China. It tells the story of how this new research area was started, how its research agenda was extended, and, in particular, how a focus on graph games developed. Important ideas and research results are summarised, with an emphasis on the connections between them. An important aspect of this history is the successful collaboration between Chinese and international colleagues

Prioritized Imperatives and Normative Conflicts

Imperatives occur ubiquitously in natural languages. They produce forces which change the addressee’s cognitive state and regulate her actions accordingly. In real life we often receive conflicting orders, typically, issued by various authorities with different ranks. A new update se- mantics is proposed in this paper to for- malize this idea. The general properties of this semantics, as well as its background ideas are discussed extensively. In addition, we compare our framework with other ap- proaches of deontic logics in the context of normative conflicts

Diversity of Logical Agents in Games

Les agents épistémiques peuvent avoir différents pouvoirs d’observation et de raisonnement, et nous montrons comment cette diversité prend place en logique dynamique de mise à jour.Epistemic agents may have different powers of observation and reasoning, and we show how this diversity fits into dynamic update logics

New Logical Perspectives on Ceteris Paribus Preference

SOCREAL 2013 : 3rd International Workshop on Philosophy and Ethics of Social Reality 2013. Hokkaido University, Sapporo, Japan, 25-27 October 2013. Session 3 : Logic, Norms, and Preference

Simple Logic of the Hide and Seek Game

6th International Workshop On Philosophy and Logic of Social Reality. 28 February – 1 March, 2022, On-Lin

Understanding Deontics from a Preference Perspective

SOCREAL 2010: 2nd International Workshop on Philosophy and Ethics of Social Reality. Sapporo, Japan, 2010-03-27/28. Keynote Lecture

Von Wright “The Logic of Preference” revisited

Abstract. Preference is a key area where analytic philosophy meets philosophical logic. I start with two related issues: reasons for preference, and changes in preference, first mentioned in von Wright's book The Logic of Preference but not thoroughly explored there. I show how these two issues can be handled together in one dynamic logical framework, working with structured two-level models, and we investigate the resulting dynamics of reason-based preference in some detail. Next, we study the foundational issue of entanglement between preference and beliefs, and relate the resulting richer logics to belief revision theory and decision theory. Analytic philosophy is well-known for its emphasis on clarity in philosophical formulation and argument, and modern formal logic and informal analysis of language go together well as tools for this purpose. Philosophical logics are often constructed based on philosophical analysis of a certain concept, but then in return, new logics become new tools suggesting new philosophical notions. I am interested in a harmonious interplay between analytic philosophy and philosophical logic, where ideas can flow both ways. In this paper, I will take the case of preference as a typical example, a crucial notion guiding rational choice and action. Starting with von Wright's work, The Logic of Preference, where he gave a philosophical analysis of preference and also a first logical system that became very influential, I hope to show how modern logic can add further technical sophistication, while also raising new philosophical questions