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Lieke Verhelst: Ontology Development ..the Lean way

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http://2015.semantics.cc/lieke-verhelst

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Lieke Verhelst: Ontology Development ..the Lean way

  1. 1. Ontology Development ..the Lean way Lieke Verhelst MSc Linked Data Factory
  2. 2. 2 www.linkeddatafactory.com CC-BY-SA Lessons learned in collaborative semantic modelling Start Finish Agenda T h e s t a g e Lean = value for the customer
  3. 3. 3 www.linkeddatafactory.com CC-BY-SA Use cases S e m a n t i c t e c h n o l o g y Identify Compare Match Integrate Relate Transform Find Understand (human) Evaluate Logic (machine)
  4. 4. 4 www.linkeddatafactory.com CC-BY-SA Integrate, transform Model complexity U s e C a s e R e q u i r e m e n t s Identify Understand (human) Match, compare
  5. 5. 5 www.linkeddatafactory.com CC-BY-SA Very Simple Model M o d e l C o m p l e x i t y UID-1 Book @en “A printed work..” @en UID-2 Dog @en “Animal with...” @en
  6. 6. 6 www.linkeddatafactory.com CC-BY-SA UID-1 Book @en “A printed work..” @en Thesaurus Model M o d e l C o m p l e x i t y UID-2 Fiction @en UID-3 Nonfiction @en UID-A Novel @en UID-163 Magazine @en “.. often illustrated ..” @en BROADER/ NARROWER MATCHRELATED
  7. 7. 7 www.linkeddatafactory.com CC-BY-SA UID-71 Ontology Model M o d e l C o m p l e x i t y UID-12 Topic @en UID-B Publisher @en UID-A Novel @en UID-2 Author @en Audience @en hasTopic UID-1 Book @en has Author min 1 hasPublisher hasAuthor hasAudience
  8. 8. 8 www.linkeddatafactory.com CC-BY-SA Identify Understand (human) Relate Compare/Match Transform All URI strategy URI strategy …… …… …… …… …… …… Skills Meaningful, meaningless Meaningful, meaningless …… …… …… …… …… …… Tools Labels (preferred, alternative) …… …… …… Restrictions Environments Language Relation definition Type Propagation Datatype definition Resources Definition Relation direction Equality SPARQL Construct Users Relation semantics Inference Rules Targets Technical Design U s e C a s e R e q u i r e m e n t s
  9. 9. 9 www.linkeddatafactory.com CC-BY-SA Integrate, transform Model strategy U s e C a s e R e q u i r e m e n t s Identify Understand (human) Match, compare, infer BRIDGE THIS GAP!
  10. 10. 10 www.linkeddatafactory.com CC-BY-SA Identify Tasks Design URI strategy Decide on identifiers (meaningful, meaningless) Register and document Phase 1 Describe Tasks Name it Translate it Define it Phase 2 Relate Tasks Relate it Relate it Relate it Phase 3 Design Tasks Refine relations Redefine hierarchy Bridge SKOS and OWL Patterns Phase 4 Code Tasks Refine relations Define datatypes Code conversions Write rules Phase 5 Incremental design M o d e l S t r a t e g y MOST EFFORT (SME’s)!
  11. 11. 11 www.linkeddatafactory.com CC-BY-SA 01 Identifiers List of identifiers and e.g. link to picture Simple API 02 Names Items have definite pref., alt. names and translations Delivery I n c r e m e n t a l D e s i g n 03 Items defined and related in thesaurus model (SKOS) Relations 04 Separate OWL model with more specific relations and hierarchy. OWL-SKOS mapping Instances 05 OWL model with datatypes, restrictions and rules Transformations
  12. 12. 12 www.linkeddatafactory.com CC-BY-SA Tools • Off the shelf available • Open source available • Tool selection by experienced staff Change • Change management process • Change of model • Change in data • When ready for use? Use • Learning by using • Incremental improvements • User feedback Skills • Targeted training • Separation of concern • Modeling guidelines available (e.g. ISO 25964 - thesaurus) Communicate • Change management • Methods for access • User feedback Practical issues M o d e l S t r a t e g y
  13. 13. 13 www.linkeddatafactory.com CC-BY-SA ? THANK YOU, are there any Questions? info@linkeddatafactory.nl

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