|Title||All Elephants are Bigger than All Mice|
|Publication Type||Conference Paper|
|Year of Publication||2008|
|Publisher||21st International Workshop on Description Logics, DL2008|
We investigate the concept product as an expressive feature for description logics (DLs). While this construct allows us to express an arguably very common and natural type of statement, it can be simulated only by the very expressive DL SROIQ for which no tight worst-case complexity is known. However, we show that concept products can also be added to the DLs SHOIQ and SHOI, and to the tractable DL EL++ without increasing the worst-case complexities in any of those cases. We therefore argue that concept products provide practically relevant expressivity at little cost, making them a good candidate for future extensions of the DL-based ontology language OWL.
|Full Text|| |
Sebastian Rudolph, Markus Krotzsch and Pascal Hitzler, 'All Elephants are Bigger than All Mice,' Proceedings of the 21st International Workshop on Description Logics, DL2008, Dresden, Germany, May 2008.