Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse




Conference Paper

How to Use Modalities and Sorts in Prolog


Nonnengart,  Andreas
Programming Logics, MPI for Informatics, Max Planck Society;

There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available

Nonnengart, A. (1994). How to Use Modalities and Sorts in Prolog. In C. MacNish, D. Pearce, & L. M. Pereira (Eds.), Logics in Artificial Intelligence: Proceedings of the JELIA'94 (pp. 365-378). Berlin, Germany: Springer.

Cite as:
Standard logic programming languages like Prolog lack the possibility of dealing with modalities and/or sorts. A first idea how to overcome this problem (and that without changing anything on Prolog itself) would be to apply the well-known relational translation approaches from modal and sorted logic into first-order predicate logic and to feed this translation result into Prolog. This, however, leads into other problems: firstly, the transformed problem is usually of much bigger size (number of clauses) than the original one and, secondly, very often it is not even in Horn form anymore. In this paper a translation approach is proposed which avoids both of these problems, i.e.\ the number of clauses after translation is exactly as big as it would have been if we simply ignored the modal operators and sort restrictions and, also, the result is in Horn form provided it was already before (modulo modal operators and sorts).