Spatial Groundings for Meaningful Symbols
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Spatial Groundings for Meaningful Symbols

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A short AISB 2009 presentation

A short AISB 2009 presentation

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Spatial Groundings for Meaningful Symbols Presentation Transcript

  • 1. Spatial Groundings for Meaningful Symbols Stefan Dietze a , Vlad Tanasescu b a Knowledge Media Institute, The Open University, Milton Keynes, UK, s.dietze@open.ac.uk. b Cultures of Legibility project, School of Arts, The University of Edinburgh, vlad.tanasescu@ed.ac.uk.
  • 2. Meaning – Similarity - Interoperability <owl:Class rdf:ID=&quot;Color&quot;> <rdfs:subClassOf> <owl:Class rdf:ID=&quot;PhysicalQuality&quot;/> </rdfs:subClassOf> </owl:Class> <Color rdf:ID=&quot;Lilac&quot;/> <owl:Class rdf:ID=&quot;Colour&quot;> <rdfs:subClassOf> <owl:Class rdf:ID=&quot;Quality&quot;/> </rdfs:subClassOf> </owl:Class> <Colour rdf:ID=&quot;Purple&quot;/> ?
    • Symbol grounding problem:
    • Ontological symbols lack meaningful grounding in reality (or cognitive dimensions)
    Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK
  • 3. Meaning – Similarity - Interoperability <owl:Class rdf:ID=&quot;Color&quot;> <rdfs:subClassOf> <owl:Class rdf:ID=&quot;PhysicalQuality&quot;/> </rdfs:subClassOf> </owl:Class> <Color rdf:ID=&quot;Lilac&quot;/> <owl:Class rdf:ID=&quot;Colour&quot;> <rdfs:subClassOf> <owl:Class rdf:ID=&quot;Quality&quot;/> </rdfs:subClassOf> </owl:Class> <Colour rdf:ID=&quot;Purple&quot;/>
    • Symbol grounding problem:
    • Ontological symbols lack meaningful grounding in reality (or cognitive dimensions)
    • Reasoning about similarity between symbols difficult
    Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK ?
  • 4. Meaning – Similarity - Interoperability <owl:Class rdf:ID=&quot;Color&quot;> <rdfs:subClassOf> <owl:Class rdf:ID=&quot;PhysicalQuality&quot;/> </rdfs:subClassOf> </owl:Class> <Color rdf:ID=&quot;Lilac&quot;/> <owl:Class rdf:ID=&quot;Colour&quot;> <rdfs:subClassOf> <owl:Class rdf:ID=&quot;Quality&quot;/> </rdfs:subClassOf> </owl:Class> <Colour rdf:ID=&quot;Purple&quot;/> linguistic similarity? linguistic similarity? structural similarity?
    • Symbol grounding problem:
    • Ontological symbols lack meaningful grounding in reality (or cognitive dimensions)
    • Reasoning about similarity between symbols difficult
    • Ontology interoperability needs to be based on (a) manual mappings or (b) linguistic or structural similarities (costly and error-prone)
    • Need for grounded symbols allowing for implicit similarity representations
    Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK
  • 5. Meaning – Similarity - Interoperability
    • Two approaches to more meaningful symbols…
    • … based on grounding ontologies in:
    • Conceptual Spaces (b) Processual Spacetime
    Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK car user1 user2 user3 wheels wheel travel vehicle
  • 6. Grounding ontologies in Conceptual Spaces Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK
      • Enhancing ontologies through CS -based representations (through CS ontology)
      • Multiple CS (each representing one concept C in one ontology O ),
      • Instances I of C represented as members M in CS .
  • 7. Grounding ontologies in Conceptual Spaces Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK
      • Enhancing ontologies through CS -based representations (through CS ontology)
      • Multiple CS (each representing one concept C in one ontology O ),
      • Instances I of C represented as members M in CS .
      • Similarity-computation between instances across ontologies by means of spatial distances
      • Requires common agreement at concept (i.e. CS) level …
      • … common case due to (a) usage of upper-level ontologies or (b) usage of ontologies within (virtual) organisations.
  • 8. Grounding ontologies in Conceptual Spaces Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK
    • Several applications utilising CS-based groundings for:
    • Ontology interoperability
  • 9. Grounding ontologies in Conceptual Spaces Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK
    • Several applications utilising CS-based groundings for:
    • Ontology interoperability
    • Semantic Web Service discovery / interoperability
  • 10. Grounding ontologies in Conceptual Spaces Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK
    • Several applications utilising CS-based groundings for:
    • Ontology interoperability
    • Semantic Web Service discovery / interoperability
    • Bridging between sensor data and symbolic ontologies
  • 11. Grounding ontologies in Processual Spacetime I Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK Processual spacetime : Extreme Tagging Systems (ETS) :
    • Instances considered as Processes in space and time rather than Things .
    • Concepts as abstract process occurrences, i.e. probabilities that a process has a given set of characteristics.
    • Copresence or cooccurrence relations: indicator of a significant probability that entities occur in the same spacetime region. E.g. `university’ and `campus’.
    • Entities are the result of discrimination (Harnad 1990), they are differences .
    • Collaborative tagging systems provide an appropriate model for descriptive discrimination.
    • Extreme Tagging Systems (ETS), or Tagging the Tags, provides an appropriate model for spatiotemporal process exploration. How?
    car user1 user2 user3 wheels wheel travel vehicle
  • 12. Grounding ontologies in Processual Spacetime II We adopt an associative network model in which a limited number of mental relations can be used to describe the association processes:
    • Co-occurrence : significant probability of co-presence of the two elements in a region of spacetime. E.g. ‘car’ and ‘wheels’.
    • Similarity : the concepts appear similar. E.g. ‘pub’ and ‘bar’.
    • Cause-effect : causal relation. E.g. ‘weapon’ and ‘death’
    Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK
    • Application: in the Cultures of Legibility project, interview data about places and itineraries is projected on an ETS for automatic inference
  • 13. Stefan Dietze & Vlad Tanasescu - Spatial Groundings for Meaningful Symbols Workshop on Matching and Meaning, AISB, April 9th 2009, Edinburgh, UK More during the poster session… … or via: [ http://people.kmi.open.ac.uk/dietze ] [ http://archipelagos.eu (soon) ]