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OnTeA

Tool creates semantic metadata according to domain ontology from text.

Ontea at Sourceforge.net - More info & Download

• Semi-automatic Semantic Annotation Tool
• Suitable for Knowledge Management and Semantic Driven Applications
• Success rate about 80% in selected applications
• Developed in Java with Jena or Sesame library
• Demo of use from NAZOU project
• Video EN Video SK
• Ontea was created in the NAZOU project

Addressed Problems

When documents (HTML, text) are processed by computer system it needs to understand document structure. Web documents are structured but its structure is understandable mainly for humans. This problem is basic problem of the Semantic Web. OnTeA tool tries to create structured semantic metadata out of such documents according to the application domain ontology model. Thus OnTeA does not create new ontology, but tries to map documents with its equivalent in defined application ontology.

Description

OnTeA tool analyze document or text using a regular expression patterns and detects equivalent semantics elements according to defined domain ontology. Several cross application patterns are defined but to achieve good results new patterns need to be defined for each application. OnTeA also creates new ontology individual of defined class and assignees detected ontology elements/individuals as properties of defined ontology class. Thus ontology instance of job offer is created out of its text representation in NAZOU pilot application.

• Michal Laclavik, Martin Seleng, Emil Gatial, Zoltan Balogh, Ladislav Hluchy
  Ontology based Text Annotation - OnTeA [PPT]
  Information Modelling and Knowledge Bases XVIII. IOS Press, Amsterdam, Marie Duzi, Hannu Jaakkola, Yasushi Kiyoki, Hannu Kangassalo (Eds.), Frontiers in Artificial Intelligence and Applications, Vol. 154, February 2007, pp.311-315. ISBN 978-1-58603-710-9, ISSN 0922-6389.
  
  
• Michal Laclavik, Martin Seleng, Marian Babik
  OnTeA: Semi-automatic Ontology based Text Annotation Method
  ITAT 2006, NAZOU Workshop, 26. 9 - 1. 10. 2006, Chata Kosodrevina, Bystrá dolina, Nízke Tatry, 2006
  
  
• LACLAVIK M., GATIAL E., BALOGH Z., HABALA O., NGUYEN G., HLUCHY L.
  Experience Management Based on Text Notes (EMBET) [PPT]
  In: Proc. of eChallenges 2005 Conference, 19 - 21 October 2005, Ljubljana, Slovenia, Innovation and the Knowledge Economy, Volume 2, Part 1: Issues, Applications, Case Studies; Edited by Paul Cunnigham and Miriam Cunnigham; IOS Press, pp.261-268. ISSN 1574-1230, ISBN 1-58603-563-0.
  
  
• LACLAVIK M., GATIAL E., BALOGH Z., HABALA O., NGUYEN G., HLUCHY L.
  Semantic Annotation based on Regular Expressions [PPT]
  ITAT 2005, 20-25 September 2005, Hotel Akademik, Rackova dolina, http://ics.upjs.sk/itat/ In: Proceedings of ITAT 2005 Information Technologies - Applications and Theory, Peter Vojtas (Ed.), Prirodovedecka fakulta Univerzity Pavla Jozefa Safarika v Kosiciach, 2005, pp.305-306. Slovakia, September 2005. ISBN 80-7097-609-8.
  
  

Ontea Architecture