This paper proposes a framework to learn concepts from di erent kinds of observations. We de ne a language to describe meta-concepts, that represent the sets of possible concepts ...
We present work in progress on abstracting dialog managers from their domain in order to implement a dialog manager development tool which takes (among other data) a domain descri...
Designing a DL system poses the problem of the trade-o between power of expression and complexity. In spite of their rich expressive capacity, the or and not constructors are usua...
Several significant problems exist whenapplying knowledge representation systems to real problems. In particular, the obscurity of LISP, the resource consumption, garbage collecti...
We study the complexity of evaluating positive equality-free sentences of first-order (FO) logic over fixed, finite structures B. This may be seen as a natural generalisation of th...