There is a marked gap between the demands on forecasting and the results that numerical forecasting techniques usually can provide. It is suggested that this gap can be closed by the implementation of experts' qualitative predictions into numerical forecasting systems. A formal analysis of these predictions can then be integrated into quantitative forecasts. In the framework of possibility theo...

Humans currently use arguments for explaining choices which are already made, or for evaluating potential choices. Each potential choice has usually pros and cons of various strengths. In spite of the usefulness of arguments in a decision making process, there have been few formal proposals handling this idea if we except works by Fox and Parsons and by Bonet and Geffner. In this paper we propo...

In this paper, we study the semantics for the logics of preference based on possibility theory. Possibility distributions representing the preference between worlds are associated with the possible world models for dynamic logics. Then the preference between actions are determined by comparing some measures of their consequences. We define different logics of preference by considering the compa...

This paper for the first time presents a parallel between two important theories for the treatment of information which address questions that are apparently completely different and that are studied by research communities that are fully distinct : the formal concept analysis theory on the one hand and the abstract theory of argumentation on the other hand. These two theories exploit a binary ...

In this paper, we analyze the formalism proposed by Yagerr6] to represent default knowledge in the framework of possibility theory. Three diierent application schemes are examined. The results produced by these application schemes are compared with those by Reiter's default logic. It is shown that for a restricted class of default theories, there is some kinds of correspondence between Yager's ...

The main subject of this paper is the embedding of fuzzy set theory—and related concepts—in a coherent conditional probability scenario. This allows to deal with perception-based information—in the sense of Zadeh—and with a rigorous treatment of the concept of likelihood, dealing also with its role in statistical inference. A coherent conditional probability is looked on as a general non-additi...

ABSTRACT It is currently fashionable to take Putnamian model-theoretic worries seriously for mathematics, but not discussions of ordinary physical objects and the sciences. However, I will argue that (under certain mild assumptions) merely securing determinate reference possibility suffices rule out kind nonstandard interpretations our number talk Putnam invokes. So, anyone who accepts should r...