- From: Cristiano Longo <longo@dmi.unict.it>
- Date: Mon, 18 Jul 2011 12:52:06 +0200
- To: Markus Krötzsch <markus.kroetzsch@cs.ox.ac.uk>
- CC: semantic-web@w3.org
Since I discovered a description logic in which the consistency problem >> in NP-complete (cf. [1]), and I wander if this teoretical property is >> relevant in the real world, considering that non-deterministic >> computations cannot take place with the hardware that is actually >> available. > > There are already a number of DLs where consistency checking is > polynomial. So an NP-complete logic would be somewhere in between the > tractable and the highly expressive. Since you have a new unusual > semantics for DLs, you will probably have to invent new algorithms too. > > Markus Of course, I think I'll take a look to the open source existing reasoner. Thank You, Cristiano Longo PS: the semantics of the description logic mentioned in the paper is the usual descriptive one. > >> >> [1] Domenico Cantone, Cristiano Longo, and Antonio Pisasale. Comparing >> Description Logics >> with Multi-level Syllogistics: the Description Logic DL <MLSS^{×}_{2,m}> >> . In 6th Workshop on >> Semantic Web Applications and Perspectives (SWAP), 2010. >> >> > >
Received on Monday, 18 July 2011 10:52:46 UTC