|Title||Cheap Boolean Role Constructors for Description Logics|
|Publication Type||Conference Paper|
|Year of Publication||2008|
|Authors||Sebastian Rudolph, Markus Krotzsch, Pascal Hitzler|
|Conference Name||11th European Conference on Logics in Artificial Intelligence (JELIA)|
|Conference Location||Dresden, Germany|
We investigate the possibility of incorporating Boolean role constructors on simple roles into some of today's most popular description logics, focussing on cases where those extensions do not increase complexity of reasoning. We show that the expressive DLs SHOIQ and SROIQ, serving as the logical underpinning of OWL and the forthcoming OWL 2, can accommodate arbitrary Boolean expressions. The prominent OWL-fragment SHIQ can be safely extended by safe role expressions, and the tractable fragments EL++ and DLP retain tractability if extended by conjunction on roles, where in the case of DLP the restriction on role simplicity can even be discarded.
|Full Text|| |
Sebastian Rudolph, Markus Krotzsch, Pascal Hitzler, 'Cheap Boolean Role Constructors for Description Logics,' 11th European Conference on Logics in Artificial Intelligence (JELIA), September 2008, pp. 362-374.