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Temporal representation and reasoning in OWL 2

Sotiris Batsakis, Euripides G.M. Petrakis, Ilias Tachmazidis, Grigoris Antoniou, Aldo Gangemi
2017 Semantic Web Journal  
Building upon existing Semantic Web standards, tools and recommendations (like OWL 2, SWRL), as well as integrating temporal reasoning support into the proposed representation, are important design features  ...  Qualitative temporal information representation in particular, is realized using sets of SWRL rules and OWL axioms leading to a sound, complete and tractable reasoning procedure based on path consistency  ...  Temporal Representation We propose an ontology for representing and reasoning over dynamic information in OWL.  ... 
doi:10.3233/sw-160248 fatcat:36udia2qzraqxoyhknja7in5cm

Temporal Reasoning for Supporting Temporal Queries in OWL 2.0 [chapter]

Sotiris Batsakis, Kostas Stravoskoufos, Euripides G. M. Petrakis
2011 Lecture Notes in Computer Science  
We propose an approach for reasoning and querying over temporal information in OWL ontologies.  ...  Qualitative representations are very common in natural language expressions such as in free text or speech and can be proven to be valuable in the Semantic Web.  ...  This restriction is necessary in order to guarantee decidability in reasoning with OWL 2 DL.  ... 
doi:10.1007/978-3-642-23851-2_57 fatcat:s5sct2ec4nd5pd7ex7ce3cr4ti

Representing Temporal Knowledge in the Semantic Web: The Extended 4D Fluents Approach [chapter]

Sotiris Batsakis, Euripides G. M. Petrakis
2011 Smart Innovation, Systems and Technologies  
Existing approaches allow for representations of temporal information, but do not support representation of qualitative relations and reasoning.  ...  Representing information that evolves in time in ontologies, as well as reasoning over static and dynamic ontologies are the areas of interest in this work.  ...  The temporal representation model is presented in Section III and the corresponding reasoning mechanism in Section III-A, followed by evaluation in Section IV and conclusions and issues for future work  ... 
doi:10.1007/978-3-642-19618-8_4 fatcat:vggndpwpfbhpbmpqy7x4f6vjay

CHRONOS: Improving the Performance of Qualitative Temporal Reasoning in OWL

Eleftherios Anagnostopoulos, Euripides G.M. Petrakis, Sotirios Batsakis
2014 2014 IEEE 26th International Conference on Tools with Artificial Intelligence  
We investigate on potential improvements to reasoning about qualitative temporal information in OWL.  ...  The experimental results demonstrate that the two implementation variants of CHRONOS discussed in this work run up to two orders of magnitude faster than SOWL, a temporal reasoner implemented in SWRL.  ...  Taking advantage of OWL semantics, temporal reasoning in separated from standard OWL DL reasoning which is handled by Pellet.  ... 
doi:10.1109/ictai.2014.54 dblp:conf/ictai/AnagnostopoulosPB14 fatcat:grmfyg5oyjfy5k2kk2nsdupiha

CNTRO: A Semantic Web Ontology for Temporal Relation Inferencing in Clinical Narratives

Cui Tao, Wei-Qi Wei, Harold R Solbrig, Guergana Savova, Christopher G Chute
2010 AMIA Annual Symposium Proceedings  
Using Semantic-Web specifications to represent temporal information in clinical narratives is an important step for temporal reasoning and answering time-oriented queries.  ...  More temporal information and relations can then be inferred by Semantic-Web based reasoning tools.  ...  Acknowledgment This research is partially supported by the National Science Foundation under Grant #0937060 to the Computing Research Association for the CIFellows Project and also funded in part by U01  ... 
pmid:21347086 pmcid:PMC3041418 fatcat:o3astqdzczbclfpl5ygrpqjpaq

SOWL

Sotiris Batsakis, Euripides G. M. Petrakis
2010 Proceedings of the 6th International Conference on Semantic Systems - I-SEMANTICS '10  
information and evolution in space and time can be efficiently represented in OWL.  ...  A distinct feature of SOWL is the incorporation spatio-temporal reasoning in SOWL, which is capable of inferring spatio-temporal information from representations in the underlying ontology model.  ...  Nevertheless, representation of temporal information in OWL is feasible, although complicated [2, 9] .  ... 
doi:10.1145/1839707.1839726 dblp:conf/i-semantics/BatsakisP10 fatcat:yr6ne4l4zjclfdcmrmfxtlu5ne

CHRONOS: A Reasoning Engine for Qualitative Temporal Information in OWL

Eleftherios Anagnostopoulos, Sotiris Batsakis, Euripides G.M. Petrakis
2013 Procedia Computer Science  
We propose CHRONOS, a system for reasoning over temporal information in OWL ontologies.  ...  Qualitative representations are very common in natural language expressions such as in free text or speech and can be proven to be valuable in the Semantic Web.  ...  Conclusions and Future Work We propose CHRONOS, a stand-alone temporal OWL reasoner following the example of Pellet-Spatial and CHOROS for reasoning over temporal knowledge in ontologies using OWL.  ... 
doi:10.1016/j.procs.2013.09.082 fatcat:6cmsq7f2tfbjjn56r656rlt3s4

SP-ACT: A hybrid framework for complex activity recognition combining OWL and SPARQL rules

Georgios Meditskos, Stamatia Dasiopoulou, Vasiliki Efstathiou, Ioannis Kompatsiaris
2013 2013 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)  
support for (i) temporal reasoning and (ii) new named individual assertions.  ...  In this paper we describe SP-ACT, a hybrid framework for the derivation of high-level activity interpretations in context-aware environments, by defining a combination of OWL ontologies and SPARQL CONSTRUCT  ...  ACKNOWLEDGMENT This work has been supported by the EU FP7 project Dem@Care: Dementia Ambient Care -Multi-Sensing Monitoring for Intelligent Remote Management and Decision Support under contract No. 288199  ... 
doi:10.1109/percomw.2013.6529451 dblp:conf/percom/MeditskosDEK13 fatcat:csofyz62drgdtemtlzox4udomu

Representing Time and Space for the Semantic Web

Sotiris Batsakis, Ilias Tachmazidis, Grigoris Antoniou
2017 International journal on artificial intelligence tools  
This work proposes several temporal representations for time points and intervals and spatial topological representations in ontologies by means of OWL properties and reasoning rules in SWRL.  ...  In addition to this, several existing and proposed approaches are compared using different reasoners and experimental results are presented in detail.  ...  In addition, reasoning performance using different point and temporal representations and reasoners is evaluated.  ... 
doi:10.1142/s0218213017600156 fatcat:ntc7rq3tlrhstkmmuydcudjxzm

SOWL: A Framework for Handling Spatio-temporal Information in OWL 2.0 [chapter]

Sotiris Batsakis, Euripides G. M. Petrakis
2011 Lecture Notes in Computer Science  
We propose SOWL, an ontology for representing and reasoning over spatio-temporal information in OWL.  ...  Representing both qualitative temporal and spatial information (i.e., information whose temporal or spatial extents are unknown such as "leftof" for spatial and "before" for temporal relations) in addition  ...  Related work in the field of knowledge representation is discussed in Section 2. This includes issues related to representing and reasoning about information evolving in time and space.  ... 
doi:10.1007/978-3-642-22546-8_19 fatcat:ew3vsenrxfaqjpasfegzntqquy

CHRONOS: A Tool for Handling Temporal Ontologies in Protégé

A. Preventis, P. Marki, E. G. M. Petrakis, S. Batsakis
2012 2012 IEEE 24th International Conference on Tools with Artificial Intelligence  
We introduce CHRONOS, a plug-in for Protégé OWL editor that facilitates creation and editing of temporal ontologies in OWL.  ...  Temporal relations are in fact ternary (i.e., properties of objects that change in time involve also a temporal value in addition to the object and the subject) and cannot be handled directly by OWL.  ...  Pellet in Protégé) or, an OWL reasoner might not compute all temporal inferences.  ... 
doi:10.1109/ictai.2012.69 dblp:conf/ictai/PreventisMPB12 fatcat:7sb4c66pvrd6hpwe74krwxy3yu

Imposing Restrictions over Temporal Properties in OWL: A Rule-Based Approach [chapter]

Sotiris Batsakis, Euripides G. M. Petrakis
2012 Lecture Notes in Computer Science  
However, data and property semantics are not preserved in the resulting representations nor can they be handled by ordinary reasoners such as Pellet.  ...  Introducing the dimension of time in ontologies turns binary relations into ternary which cannot be handled by OWL.  ...  Then, the number of OWL axioms and SWRL rules required for reasoning is limited to 20 [2] , implying that the representation based on temporal instants must be preferred over the one based on temporal  ... 
doi:10.1007/978-3-642-32689-9_19 fatcat:l25m4luyxzbqtdlgltdqqm6ynq

Event order generation using Reference Event based qualitative Temporal (REseT) relations in Time Event Ontology

V. Uma, G. Aghila
2014 Open Computer Science  
This paper proposes a temporal knowledge representation and reasoning based event ordering system which helps in the temporal ordering of events.  ...  The basic Allen's temporal interval relations can be used to describe relations in OWL. Allen's interval algebra is a well known formalism used to represent and reason the temporal knowledge.  ...  Time representation in Semantic Web can be achieved by using efficient representation and reasoning languages. In OWL, temporal predicates are temporal relations that relate time intervals [5] .  ... 
doi:10.2478/s13537-014-0202-9 fatcat:qtrkjlyprbha5lt6owycgm4ufm

An architecture for specification and enforcement of temporal access control constraints using OWL

Hassan Takabi, Minsoo Kim, James B.D. Joshi, Michael B. Spring
2009 Proceedings of the 2009 ACM workshop on Secure web services - SWS '09  
In this paper, we show how to model temporal constraints and restrictions in GTRBAC using OWL.  ...  In order to do this, we define OWL ontologies that represent temporal constraints in GTRBAC and describe implementation of a scalable architecture for specification and enforcement of GTRBAC policies.  ...  RELATED WORK There have recently been some efforts to look at OWL as a representation language for RBAC policies. Finin et al. have introduced ROWLBAC, a representation of RBAC in OWL [2, 13] .  ... 
doi:10.1145/1655121.1655127 dblp:conf/sws/TakabiKJS09 fatcat:osp7uabkc5dhbdjlerbx6rcnpq

FT-SWRL: A Fuzzy-Temporal Extension of Semantic Web Rule Language [article]

Abba Lawan, Abdur Rakib
2019 arXiv   pre-print
imprecise temporal domain knowledge in OWL ontologies.  ...  Fuzzification process of interval-based temporal logic is further discussed as a reasoning paradigm for our FT-SWRL rules, with the aim of achieving a complete OWL-based fuzzy temporal reasoning.  ...  These were also defined in the basic OWL temporal ontology (OWL Time) 2 .  ... 
arXiv:1911.12399v1 fatcat:jjai2yxrp5gg7cdszvxdragwm4
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