Showing posts with label Meta Data. Show all posts
Showing posts with label Meta Data. Show all posts

Wednesday, September 09, 2009

VoCampBristol 2009 - Thursday 10th, Friday 11th September

These are the details for - The 9th ever VoCamp, and the first in Bristol.

Thursday 10th and Friday 11th September 2009. Note that this date has been changed due to a conflict - http://vocamp.org/wiki/VoCampBristol2009.

WhatIsVoCamp

What's the Problem?

Continued growth of the Web of Data/Semantic Web is heavily dependent on the availability of vocabularies/ontologies that can be used to publish data. While a number of key vocabularies are in widespread use, there are also many areas with little or no vocabulary coverage, hindering the ability to publish data in these domains.

Peter Mika outlines some of the issues he sees with the current state of vocabularies on the Semantic Web in his blog post What’s wrong with vocabularies on the Semantic Web?
What is VoCamp?

VoCamp is a series of informal events where people can spend some dedicated time creating lightweight vocabularies/ontologies for the Semantic Web/Web of Data. The emphasis of the events is not on creating the perfect ontology in a particular domain, but on creating vocabs that are good enough for people to start using for publishing data on the Web. The intention is to follow a "paper first, laptops second" format, where the modelling is done initially on paper and only later committed to code. The VoCamp idea is influenced by BarCamp, although the emphasis is different. Whereas BarCamps are oriented to demos and presentations, VoCamps are oriented to hands-on technical work and practical outputs; any presentations and demos should be short, highly on-topic to the vocabulary development process, and limited in number, to leave plenty of time for hacking on new vocabularies.

What Next?
The first VoCamp event took place in Oxford, UK in September 2008 (VoCampOxford2008), the second took place in Galway, Ireland in November 2008 (VoCampGalway2008), and the third, and first ever in the US took place in Austin, Texas (VoCampAustin2009) followed immediately by another one in Ibiza, Spain in April 2009 (VoCampIbiza2009).

Wednesday, April 11, 2007

Future Developments Of Ontologies And Visualization

So far my taxonomies include the traditional object oriented relationships such as child, parent, sibling, attribute, and instance. There are other types of relationship that would need to be modelled in order to maximise the capabilities of software that would use the taxonomies. Basic key relationships used within the object oriented programming domain between objects are implemented. These key relationships depict families of objects that may share attributes and methods through inheritance. They also describe aggregations of objects that make (usually) some geometric sense.

Semantic descriptions with more relationship types than this allow a more expressive depiction of a problem domain, and can aid some forms of search within a model. One of the main advantages of a semantic net description, in terms of automated model generation, is that labelling relationships between objects allows the depiction of a number of aspects of a domain in one model, and with a consistent syntax. Ciocoiu et al (2000) explain how an engineering ontology can be made more rigorous in order to facilitate interoperability. This allows representation of, say, a product structure and its manufacturing processes together. A single node then is the only representation of that node within the model, with all its relationships depicted as arcs emanating/terminating at the node. More expressive semantic descriptions are possible through the use of one of the standard OWL dialects. Protégé has OWL plug-ins available that provide this functionality, together with links to reasoning tools for maintaining and analysing the logical constructs (Storey et al, 2004) and (Elenius, 2005). The University of Victoria Computer-Human Interaction and Software Engineering lab (CHISEL) (University of Victoria, 2006) has developed Jambalaya (Ernst et al, 2003) for visualization of knowledge and relationships. Cheung et al (2005) provide an ontology editor for knowledge sharing in manufacturing.

It is also important not to stay limited on one ontology development environment but instead explore how ontologies can be developed using a range of development tools and translated between each where necessary (Garcia-Castro and Gomez-Perez, 2006) are testing this. For this reason, a large range of ontology management tools have been investigated and meta languages. An interesting development is SWRL a Semantic Web Rule Language Combining OWL and RuleML and its use in modelling (Miller and Baramidze, 2005).

References

Cheung, W. M., Maropoulos, P. G., Gao, J. X., Aziz, H., 2005. Ontological Approach for Organisational Knowledge Re-use in Product Developing Environments. In: 11th International Conference on Concurrent Enterprising - ICE 2005, University BW Munich, Germany.

Ciocoiu, M., Gruninger, M., Nau, D. S., 2000. Ontologies for Integrating Engineering Applications. Journal of Computing and Information Science in Engineering, 1(1) pp 12-22.

Elenius, D., 2005. The OWL-S Editor - A Domain-Specific Extension to Protégé. In: 8th Intl. Protégé Conference - July 18-21, 2005 - Madrid, Spain.

Ernst, N. A., Storey, M., Allen, P., Musen, M., 2003. Addressing cognitive issues in knowledge engineering with Jambalaya http://www.neilernst.net/docs/pubs/ernst-kcap03.pdf.

Garcia-Castro R, Gomez-Perez A, 2006. Interoperability of Protégé using RDF(S) as interchange language. In: 9th Intl. Protégé Conference, July 23-26, 2006 - Stanford, California.

Storey, M., Lintern, R., Ernst, N., Perrin, D., 2004, Visualization and Protégé In: 7th International Protégé Conference - July 2004 - Bethesda, Maryland.

University of Victoria, 2006. Model Driven Visualization (MDV) http://www.thechiselgroup.org/?q=mdv.

I am developing a project to provide free online collaborative modelling tools.

My Research - http://www.cems.uwe.ac.uk/~phale/

Examples - http://www.cems.uwe.ac.uk/~phale/InteractiveSVGExamples.htm

Semantic Web Modelling - http://www.cems.uwe.ac.uk/amrc/seeds/ModellingSemanticWeb.htm