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KMi Seminars
Ontosophie: A Semi-Automatic System for Ontology Population from Text
This event took place on Monday 06 December 2004 at 12:30

David Celjuska Technical University Kosice, Slovakia

In this talk I will describe Ontosophie, a system for semi-automatic population of ontologies with instances from unstructured text. Extraction rules are generated from annotated text using supervise learning techniques. These rules are then applied to new articles to populate the ontology. Hence, the system classifies stories and populates a hand-crafted ontology with new instances. It is based on three components: Marmot, a natural language processor; Crystal, a dictionary induction tool; and Badger, an information extraction tool.

In the talk I will address the major challenges and introduce confidence values that we implemented in the system to enhance its performance. Different methods of confidence computation will be given and their results compared on a text corpus consisting of KMi news articles.

Finally, the presentation will be followed with a brief demonstration of Ontosophie.

The talk is being hosted by Dr. Maria Vargas-Vera from KMi.

Download PowerPoint Presentation (133Kb ZIP file)

 
KMi Seminars Event | SSSW 2013, The 10th Summer School on Ontology Engineering and the Semantic Web Journal | 25 years of knowledge acquisition
 

Future Internet is...


Future Internet
With over a billion users, today's Internet is arguably the most successful human artifact ever created. The Internet's physical infrastructure, software, and content now play an integral part of the lives of everyone on the planet, whether they interact with it directly or not. Now nearing its fifth decade, the Internet has shown remarkable resilience and flexibility in the face of ever increasing numbers of users, data volume, and changing usage patterns, but faces growing challenges in meetings the needs of our knowledge society. Globally, many major initiatives are underway to address the need for more scientific research, physical infrastructure investment, better education, and better utilisation of the Internet. Within Japan, USA and Europe major new initiatives have begun in the area.

To succeed the Future Internet will need to address a number of cross-cutting challenges including:

  • Scalability in the face of peer-to-peer traffic, decentralisation, and increased openness

  • Trust when government, medical, financial, personal data are increasingly trusted to the cloud, and middleware will increasingly use dynamic service selection

  • Interoperability of semantic data and metadata, and of services which will be dynamically orchestrated

  • Pervasive usability for users of mobile devices, different languages, cultures and physical abilities

  • Mobility for users who expect a seamless experience across spaces, devices, and velocities