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A Semantic Representation of Time Intervals in OWL 2

Noura Herradi, Fayçal Hamdi, Elisabeth Métais
2017 Proceedings of the 9th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management  
In this work, we show the relationship between the OWL 2 semantics and the representation of time intervals; then we introduce a qualitative representation of temporal information based on a set of SWRL  ...  To the best of our knowledge, the most important ones focused on models, whereas Semantic Web and especially OWL 2 offers semantics that can be efficiently used to describe qualitative diachronic information  ...  In this work, we introduce a continuity of what was made before by exploiting the semantics provided by OWL 2 to give more precision to time interval representation.  ... 
doi:10.5220/0006518402690275 dblp:conf/ic3k/HerradiHM17 fatcat:s452s5vrjvc3pfoosajqjjacjm

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  
relations that are common in natural language expressions (i.e., relations between time intervals like "before", "after", etc.) are represented in ontologies.  ...  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.  ...  However, representation of time in OWL differs because (a) OWL semantics are not equivalent to ER model semantics (e.g., OWL adopts the Open World Assumption while ER model adopts the Closed World Assumption  ... 
doi:10.1007/978-3-642-19618-8_4 fatcat:vggndpwpfbhpbmpqy7x4f6vjay

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.  ...  We have developed a Semantic-Web ontology which is called Clinical Narrative Temporal Relation ontology.  ...  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.  ...  However, representation of time in OWL differs because (a) OWL semantics are not equivalent to the ER model semantics (e.g., OWL adopts the Open World Assumption while ER model adopts the Closed World  ... 
doi:10.1145/1839707.1839726 dblp:conf/i-semantics/BatsakisP10 fatcat:yr6ne4l4zjclfdcmrmfxtlu5ne

Temporal representation and reasoning in OWL 2

Sotiris Batsakis, Euripides G.M. Petrakis, Ilias Tachmazidis, Grigoris Antoniou, Aldo Gangemi
2017 Semantic Web Journal  
) and of their properties in terms of qualitative descriptions in addition to quantitative ones (i.e., dates, time instants and intervals).  ...  The representation of temporal information has been in the center of intensive research activities over the years in the areas of knowledge representation, databases and more recently, the Semantic Web  ...  The Semantic Web Approach Apart from language constructs for the representation of time in ontologies, there is still a need for mechanisms for the representation of the evolution of concepts (e.g., events  ... 
doi:10.3233/sw-160248 fatcat:36udia2qzraqxoyhknja7in5cm

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

Sotiris Batsakis, Euripides G. M. Petrakis
2012 Lecture Notes in Computer Science  
Introducing the dimension of time in ontologies turns binary relations into ternary which cannot be handled by OWL.  ...  However, data and property semantics are not preserved in the resulting representations nor can they be handled by ordinary reasoners such as Pellet.  ...  ., instants and intervals) are provided by incorporating OWL-Time into the ontology. A representation based on temporal instants (rather than intervals) is also feasible [2] .  ... 
doi:10.1007/978-3-642-32689-9_19 fatcat:l25m4luyxzbqtdlgltdqqm6ynq

Temporal Extensions to RDF

Hsien-Tseng Wang, Abdullah Uz Tansel, Abdullah Uz Tansel, Abdullah Uz Tansel
2019 Journal of Web Engineering  
The Semantic Web aims at building a foundation of semantic-based data models and languages for not only manipulating data and knowledge, but also in decision making by machines.  ...  The comparison provides a useful guideline for the researchers and practitioners of the Semantic Web in managing temporal data and knowledge.  ...  Research of the second author is partially supported by the PSC-CUNY Award No. TRADA-48-475.  ... 
doi:10.13052/jwe1540-9589.18134 fatcat:xew4zzpn6vfppjrfw4o3cv7zoq

Knowledge Engineering in a Temporal Semantic Web Context

Viorel Milea, Flavius Frasincar, Uzay Kaymak
2008 2008 Eighth International Conference on Web Engineering  
Our focus in this paper is two-fold. We first introduce a new OWL-based temporal formalism -TOWL -for the representation of time, change, and state transitions.  ...  The emergence of Web 2.0 and the Semantic Web as established technologies is fostering a whole new breed of Web applications and systems.  ...  More information is available on the official website 1 of the project.  ... 
doi:10.1109/icwe.2008.10 dblp:conf/icwe/MileaFK08 fatcat:ad4weifoafeuznypuelavnooxi

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  
Temporal representations are defined on time instants rather than on intervals (as it is typical in the literature), resulting into simpler yet equivalent representations.  ...  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.  ...  Representation of dynamic features calls for mechanisms allowing for uniform representation of the notions of time (and of properties varying in time) within a single ontology.  ... 
doi:10.1007/978-3-642-23851-2_57 fatcat:s5sct2ec4nd5pd7ex7ce3cr4ti

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.  ...  representations increases performance at query time.  ...  In [9] , such a representation, embedding semantics by means of SWRL rules, was proposed for spatial and temporal information in OWL.  ... 
doi:10.1142/s0218213017600156 fatcat:ntc7rq3tlrhstkmmuydcudjxzm

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

Abba Lawan, Abdur Rakib
2019 arXiv   pre-print
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.  ...  imprecise temporal domain knowledge in OWL ontologies.  ...  These were also defined in the basic OWL temporal ontology (OWL Time) 2 .  ... 
arXiv:1911.12399v1 fatcat:jjai2yxrp5gg7cdszvxdragwm4

Comparison of Time Concept Modeling for Querying Temporal Information in OWL and RDF

Bahareh Bahadorani, Ahmad Zaeri
2017 International Journal of Information Technology and Computer Science  
Ontology is an important factor in the integration of heterogeneous semantic information.  ...  In this paper, temporal modeling methods in OWL and RDF are assessed and the temporal query languages for expressing queries in the semantic web are categorized and compared.  ...  This is a sub-ontology of time that covers relations among instants, intervals, instant events, and interval events 2.  ... 
doi:10.5815/ijitcs.2017.07.03 fatcat:sivp7wkukfdc7pgj7noicjhc3a

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  
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.  ...  We introduce CHRONOS, a plug-in for Protégé OWL editor that facilitates creation and editing of temporal ontologies in OWL.  ...  ACKNOWLEDGMENT This work has been partially supported by project PortDial (FP7-ICT-2011-SME-DCL, Project No. 296170) of the European Union.  ... 
doi:10.1109/ictai.2012.69 dblp:conf/ictai/PreventisMPB12 fatcat:7sb4c66pvrd6hpwe74krwxy3yu

A Semantic Model to Query Spatial–Temporal Data [chapter]

Benjamin Harbelot, Helbert Arenas, Christophe Cruz
2013 Lecture Notes in Geoinformation and Cartography  
In this research we introduce a new approach that uses the concept of "continuum" together with ontologies and semantic web technologies.  ...  The "continuum" allows us to define parent-child relationships between representations of objects.  ...  that the time interval of "object 1" meets the time interval of "object 2".  ... 
doi:10.1007/978-3-642-31833-7_5 fatcat:lviu7eotgvc7jen4rxig6rliim

TOQL: Temporal Ontology Querying Language [chapter]

Evdoxios Baratis, Euripides G. M. Petrakis, Sotiris Batsakis, Nikolaos Maris, Nikolaos Papadakis
2009 Lecture Notes in Computer Science  
However, TOQL prevents users from being familiar with the representation of time in ontologies.  ...  Queries are issued as SQL-like statements involving time (i.e., time points or intervals) or high-level ontology concepts that vary in time.  ...  Acknowledgement This work was supported by project TOWL: "Time-determined ontology based information system for real time stock market analysis" (FP6-STREP, contract number 26896) of the European Union  ... 
doi:10.1007/978-3-642-02982-0_22 fatcat:av4j6nvlfvaoljrefyid7hb6b4
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