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Inproceedings1299 |
Abstract |
Horn-SHIQ has been identified as a fragmen … Horn-SHIQ has been identified as a fragment of the description logic SHIQ for which inferencing is in PTime with respect to the size of the ABox. This enables reasoning with larger ABoxes in situations where the TBox is static, and represents one approach towards tractable description logic reasoning.
In this paper, we show that reasoning in Horn-SHIQ, in spite of its low data-complexity, is ExpTime-hard with respect to the overall size of the knowledge base. While this result is not unexpected, the proof is not a mere modification of existing reductions since it has to account for the restrictions of Hornness. We establish the result for Horn-FLE, showing that Hornness does not simplify TBox reasoning even for very restricted description logics. Moreover, we derive a context-free grammar that defines Horn-SHIQ in a simpler and more intuitive way than existing characterisations. itive way than existing characterisations. +
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Author | Markus Krötzsch + , Sebastian Rudolph + , Pascal Hitzler + |
BibTex |
@inproceedings{KRH2006, author = {Markus Kr{\"{o}}tzsch and Sebastian Rudolph and Pascal Hitzler}, title = {On the complexity of Horn description logics}, editor = {Bernardo Cuenca Grau and Pascal Hitzler and Conor Shankey and Evan Wallace}, booktitle = {Proceedings of the 2nd Workshop on {OWL:} Experiences and Directions}, series = {CEUR Workshop Proceedings}, volume = {216}, publisher = {CEUR}, year = {2006}, month = {November} } |
Bibtype | Inproceedings + |
Booktitle | Proceedings of the 2nd Workshop on OWL: Experiences and Directions + |
Download | KroetzschRudolphHitzler OWLED2006.pdf + |
Editor | Bernardo Cuenca Grau, Pascal Hitzler, Conor Shankey, Evan Wallace + |
ErsterAutorNachname | Krötzsch + |
ErsterAutorVorname | Markus + |
Forschungsgebiet | Beschreibungslogiken + , Wissensrepräsentation und logisches Schließen + |
Forschungsgruppe | Wissensbasierte Systeme + , Computational Logic + |
Link | http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-216/ + , http://korrekt.org/papers/KroetzschRudolphHitzler_OWLED2006.pdf + , http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-216/, http://korrekt.org/papers/KroetzschRudolphHitzler_OWLED2006.pdf + |
Month | November + |
Publication text |
Markus Krötzsch, Sebastian Rudolph, Pascal … Markus Krötzsch, Sebastian Rudolph, Pascal Hitzler<br/> '''[[Inproceedings1299|<b>On the complexity of Horn description logics</b>]]''' <br/>__NOTOC__In Bernardo Cuenca Grau, Pascal Hitzler, Conor Shankey, Evan Wallace, eds., <i>Proceedings of the 2nd Workshop on OWL: Experiences and Directions</i>, volume 216 of CEUR Workshop Proceedings, November 2006. CEUR<br/><span class="glyphicon glyphicon-chevron-right" style="font-size: 85%;" ></span> [[Inproceedings1299|Details]] <span class="glyphicon glyphicon-chevron-right" style="font-size: 85%; margin-left: 2ex; "></span> [[Media:KroetzschRudolphHitzler OWLED2006.pdf|Download]] schRudolphHitzler OWLED2006.pdf|Download]] +
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Publication text en |
Markus Krötzsch, Sebastian Rudolph, Pascal … Markus Krötzsch, Sebastian Rudolph, Pascal Hitzler<br/> '''[[Inproceedings1299/en|<b>On the complexity of Horn description logics</b>]]''' <br/>__NOTOC__In Bernardo Cuenca Grau, Pascal Hitzler, Conor Shankey, Evan Wallace, eds., <i>Proceedings of the 2nd Workshop on OWL: Experiences and Directions</i>, volume 216 of CEUR Workshop Proceedings, November 2006. CEUR<br/><span class="glyphicon glyphicon-chevron-right" style="font-size: 85%;" ></span> [[Inproceedings1299|Details]] <span class="glyphicon glyphicon-chevron-right" style="font-size: 85%; margin-left: 2ex;" ></span> [[Media:KroetzschRudolphHitzler OWLED2006.pdf|Download]] schRudolphHitzler OWLED2006.pdf|Download]] +
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Publisher | CEUR + |
Referiert | 1 + |
Series | CEUR Workshop Proceedings + |
Title | On the complexity of Horn description logics + |
To appear | 0 + |
Type | inproceedings + |
Volume | 216 + |
Year | 2006 + |
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