A pseudolattice L is a poset with lattice-type binary operations. Assuming that the pseudolattice permits a modular representation as a family of subsets of a set U with certain c...
d Abstract) Dario Colazzo1 , Giorgio Ghelli2 , Paolo Manghi2 , and Carlo Sartiani2 1 LRI - Universit?e Paris Sud 2 Dipartimento di Informatica - Universit`a di Pisa If a subexpress...
Dario Colazzo, Giorgio Ghelli, Paolo Manghi, Carlo...
This paper explores how user modelling can work as an aid for human assistants in a user support system for web sites. Information about the user can facilitate for the assistant t...
We show how (now familiar) hierarchical representations of (convex) polyhedra can be used to answer various separation queries efficiently (in a number of cases, optimally). Our e...
A refutation mechanism is introduced into logic programming, dual to the usual proof mechanism; then negation is treated via refutation. A four-valued logic is appropriate for the...