In this paper we present a novel ontology-based model for the representation of the dramatic features of narrative media (video, text, audio, etc.), focused on the notions of the character’s motivated actions. We describe the theoretical background, composed of narratological theories and rational agent theories, that support the proposed ontological formalization. We sketch the ontology and an...

This paper shows that arbitrage is limited if rational agents face uncertainty about completing their arbitrage portfolios. This “execution risk” arises in our model because there are slippages in asset prices as arbitrageurs compete for the limited supply of assets needed for a profitable arbitrage portfolio. This is distinct from the existing limits of arbitrage such as noise trader risk, fun...

Probabilism is committed to two theses: 1) Opinion comes in degrees—call them degrees of belief, or credences. 2) The degrees of belief of a rational agent obey the probability calculus. Correspondingly, a natural way to argue for probabilism is: i) to give an account of what degrees of belief are,

Invariably across a cross-section of countries and time periods, wealth distributions are skewed to the right displaying thick upper tails, that is, large and slowly declining top wealth shares. In this survey we categorize the theoretical studies on the distribution of wealth in terms of the underlying economic mechanisms generating skewness and thick tails. Further, we show how these mechanis...

As increasing numbers of processors and agents pervade the human environment, societies comprising both humans and agents will emerge. Presently, it is unknown how a person might fair in such mixed societies. For the societies to operate effectively and efficiently, it is important for the humans and agents to recognize and understand each other’s behavior. This paper provides an initial step i...

A rational agent changes her beliefs in response to new information; a widely held idea is that such belief changes should be minimal. This paper is an overview of the theory of minimal belief revision. I employ a decisiontheoretic framework to compare various principles for minimal belief revision. The main topics covered include the AGM postulates for belief revision, belief contraction, Grov...

The design and implementation of virtual worlds is separated in time from the use of the virtual world, and therefore is not directly related to an individual’s experience of the world. We propose an approach to virtual worlds platforms in which the avatar, a visual representation of a user, has agency. As a rational agent, the avatar can respond to events in the world either through the human ...

In artificial intelligence literature there is a rising interest in studying strategic interaction situations. In these situations a number of rational agents act strategically, being in competition, and their analysis is carried out by employing game theoretical tools. One of the most challenging strategic interaction situation is the strategic patrolling: a guard patrols a number of houses in...

This paper presents a User-centred Virtual Architecture (UcVA) Agent, a kind of rational agent capable of representing a person in virtual worlds and designing virtual worlds based on current needs. The two major structural aspects of this agent are Avatar Agent and Design Agent. The UcVA agent in this paper is presented from various perspectives: structure, process, and use scenarios. A propos...

We present a framework for incorporating perceptioninduced beliefs into the knowledge base of a rational agent. Normally, the agent accepts the propositional content of perception and other propositions that follow from it. Given the fallibility of perception, this may result in contradictory beliefs. Hence, we model highlevel perception as belief revision. We overcome difficulties imposed by t...