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Agrovoc and the NAL Agricultural Thesaurus at the Ontology Alignment Evaluation Initiative

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  • 1. AGROVOC and the NAL Agricultural Thesaurus at the Ontology Alignment Evaluation Initiative Willem Robert van Hage TNO Industrie & Techniek / Vrije Universiteit Amsterdam
  • 2. Overview
    • AGROVOC & NALT
    • the Goal
      • federated access to heterogeneous data sources
    • the Method
      • align the ontologies
      • the OAEI workshop (2006 and 2007)
        • a challenge for ontology alignment researchers
        • an opportunity for environmental researchers
  • 3. AGROVOC & NALT
    • AGROVOC
      •  28.000 descriptor terms
      •  10.000 non-descriptor terms
      • ten languages (currently 17 and another 4 under construction)
      • used to index AGRIS/CARIS (and other resources)
    • NALT
      •  41.000 descriptor terms
      •  24.000 non-descriptor terms,
      • english (currently also spanish)
      • used to index AGRICOLA, FSRIO, AgNIC, NALDR (and other resources)
  • 4. AGROVOC & NALT AGROVOC NALT
  • 5. AGROVOC NALT AGRICOLA FSRIO AgNIC NALDR AGRIS/ CARIS wheat aphids wheat aphid, Russian USE: Diuraphis noxia Diuraphis noxia 麦双尾蚜 麦双尾蚜 Diuraphis noxia Diuraphis noxia the Goal
  • 6.
    • OAEI 2006
      • A friendly competition between scientists
      • Six ontology alignment tasks: benchmark, anatomy, conference, directory, jobs, and AGROVOC-NALT
    • OAEI 2006 AGROVOC-NALT
      • Five participants: Falcon-AO, PRIOR, RiMOM, COMA++, HMatch
    • The systems align the SKOS version of the ontologies without manual intervention.
    • The set of alignments (around 10.000 per participant) are collected and samples are judged by experts (FAO, USDA and AI researchers at the EKAW conference)
    • The results are published at: http://www.few.vu.nl/~wrvhage/oaei2006
    the Method - OAEI
  • 7. OAEI 2006 - performance Precision Recall
  • 8. OAEI 2006 - conclusions
    • Alignments that are easy to automate:
      • High consensus topics such as:
        • Latin species names (rigid Linnaeic naming scheme)
        • Some geographical names
        • Parts of the medical domain (parts of anatomy and diseases)
    • Alignments that are hard to automate:
      • Low consensus topics such as:
        • Different notations of chemicals (e.g. caffeine vs. theine vs. 1,3,7-trimethyl-1 H -purine-2,6(3 H ,7 H )-dione)
        • Some other geographical names (e.g. time dependency or administrative vs. physical)
        • Products and processes
        • Concepts that are culturally dependant (e.g. law and economy)
  • 9.
    • OAEI 2007
      • at ISWC 2007 in Busan, Korea, november 11th
      • again AGROVOC-NALT (did things improve?)
      • but also AGROVOC-GEMET, NALT-GEMET
    • AGROVOC-NALT
      • Falcon-AO, PRIOR+, DSSim, RiMOM
    • AGROVOC-GEMET, NALT-GEMET
      • Falcon-AO, PRIOR+, DSSim
    • Deadlines
      • submission of results: october 1st
      • evaluation of results: november 11th
    • More information can be found at: http://www.few.vu.nl/~wrvhage/oaei2007
    OAEI 2007
  • 10. References
    • AGROVOC: http://www.fao.org/agrovoc
    • NALT: http://agclass.nal.usda.gov/agt
    • GEMET http://www.eionet.europa.eu/gemet/
    • OAEI 2007: http://oaei.ontologymatching.org/2007
    • OAEI 2007: http://www.few.vu.nl/~wrvhage/oaei2007
    • OAEI 2006 results: http://www.few.vu.nl/~wrvhage/oaei2006

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