Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Open Knowledge, dowload to listen to audio annotation


Published on

Those annoying tiny squares in the middle of the slide are the audio iconts
These slides have sounds, click on sound icon for commentary,

Published in: Technology, Education
  • Be the first to comment

Open Knowledge, dowload to listen to audio annotation

  1. 2. OPEN KNOWLEDGE Paola Di Maio, University of Strathclyde OKCon 28 March 2009, UCL Spatial Institute <ul><li>CONTENTS: </li></ul><ul><li>About ‘openness’ </li></ul><ul><li>Openness and Technology </li></ul><ul><li>Ontology, and Open Ontology </li></ul><ul><li>Shared Vocabularies as a Path to Opening Up Knowledge Representation </li></ul>
  2. 3. ABOUT OPENNESS 'OPEN' phenomenon very interesting! Hard to define: what is openness? The systems thinking view of openness is: “ An open system is a state in which a system continuously interacts with its environment. Open systems are those that maintain their state and exhibit the characteristics of openness (wikipedia).”
  3. 4. Openness can be defined by: 1.context dependency (science, politics, education, technology etc)‏ 2.multidimensionality 3. less constraints 4. flexible boundaries 5. Degree of Interaction Openness is enabled by : Technologies such as internet, web Networked technologies help to maximise and make use of interactions OPENNESS REQUIRES SUITABLE INFORMATION ARCHITECTURES
  6. 7. ONTOLOGIES - Ontologies are used in support of complex information systems development and management. - They consist of semantic and logical constraints defined by: domain boundaries, axioms, classes, relations, vocabularies. Traditionally, they have been 'authoritative' and 'top down'. - Trend Toward OPEN ONTOLOGY trend (PROJECTS: myontology, viewbased ontology, various folksonomies, oOR etc)‏ A definition of Open Ontology:
  7. 8. OPEN ONTOLOGY REQUIREMENTS / 1 How can you tell if an ontology is open? It should: • declare what high level knowledge (upper level ontology) it references • state explicitly the 'sources of knowledge' (aka , provenance of axioms)‏ • state what kind of reasoning/inference supports/it is based on, support queries via natural language as well as machine language, • be visible, searchable and support queries via a Web based interface that does not require any plug-in and API for users to download, • allow users to provide feedback that should be taken into account in subsequent iterations, be documented and annotated, and available in different file formats including Open Document
  8. 9. OPEN ONTOLOGY REQUIREMENTS/2 More Possibilities: It should • be 'easy to understand' by generic users without specialized skills and guidelines should be provided as how it can be used to support development practices, • be implementation and platform independent; this means, for example that an ontology should not only exist encoded as OWL/RDF but expressed and formalized in a format that can be understood and reused by alternative ontology languages • support one view of the world if required, and allow for simultaneous multiple views, meaning that it should aim to be perfectly elastic, flexible and adaptable, • take into account language and cultural diversity, and corresponding different value systems and knowledge representation requirements, • be supported by tutorials and educational materials at different levels of specialization
  9. 10. <ul><li>SHARED VOCABULARIES </li></ul><ul><li>Common, agreed definitions of terms in use by a community </li></ul><ul><li>Shared understanding of roles and properties identified with the terms in use </li></ul><ul><li>2. Semantic mappings/clusters among different vocabularies </li></ul><ul><li>3. Definition of schemas and formats </li></ul><ul><li>4. Accessible, interpretable, usable </li></ul><ul><li>See (open community!)‏ </li></ul><ul><li> (emergency management vocabulary part the of EIIF W3C Incubator group)‏ </li></ul>
  10. 11. MY CURRENT PROJECTS <ul><li>Networked Architectures </li></ul><ul><li>Systems of Systems </li></ul><ul><li>Open Ontologies </li></ul><ul><li>Knowledge Reuse and Learning </li></ul><ul><li>Human Aspects of Semantic Technologies </li></ul>
  11. 12. <ul><li>Keep the open flowing </li></ul><ul><li>Let's talk </li></ul><ul><li>Find me on Linkedin, Facebook Skype </li></ul><ul><li>myNamedotsurname @ gmail </li></ul>