This paper describes a project aimed at creating a lexical ontology extracted (semi) automatically from a large Portuguese general dictionary. Although using machine readable dictionaries to extract semantic information is not new, we believe this is the first attempt for the Portuguese language. The paper describes a (to be) freely available resource, dubbed PAPEL, explaining the process used ...

My project in this paper is to extend the interventionist analysis of causation to give an account of causation in psychology. Many aspects of empirical investigation into psychological causation fit straightforwardly into the interventionist framework. I address three problems. First, the problem of explaining what it is for a causal relation to be properly psychological rather than merely bio...

We shortly review the statistical properties of the escape times, or hitting times, for stock price returns by using different models which describe the stock market evolution. We compare the probability function (PF) of these escape times with that obtained from real market data. Afterwards we analyze in detail the effect both of noise and different initial conditions on the escape time in a m...