Vocabulary management and SKOS Putting Business in the Lead Jan - PowerPoint PPT Presentation

Vocabulary management and SKOS Putting Business in the Lead Jan Voskuil (Taxonic) September 5th, 2014, Leipzig SEMANTiCS 2014

Introduction Jan Voskuil Taxonic (co-founder) Consultancy in Semantic Technology “SKOS is used for findability, but should be used also for vocabulary management in organizations. Business owns the dictionary, not IT”  What are dictionaries and what for?  SKOS: Tooling and benefits  Practicalities

Dienst Justitiële Inrichtingen (DJI)  Custodial Institutions Agency  Ca. 10.000 employees  Ca. 70.000 inmates per year  Ca. 50 facilities  Four groups of detainees  Adult detainees  Juvenile offenders  Patients in forensic care  Foreign nationals

Dictionaries: Benefits Knowledge management • Quality of information • Manageability • If your systems contain 100K+ of – attribute names, then they contain unstructured information (Dave McComb) Findability • – Document (DMS) – Data (DBMS) Exchangeability • 4

How many key words are enough? Frequency of the most Zipf’s Law • 5000 words are enough to understand frequent word • 95% of any corpus. For the other 5% you need to know the other 200,000 words Source: Tiberius and Schoonheim A Frequency Dictionary of Dutch, 2014 Frequency of the second most frequent word Pocket dictionary: 5K General dictionary: 100K Lexicographic dictionary: 1M+ 5

The Real World What is the correct definition of x ? Who decides this? My project introduces new terms, how can I get these accepted ? Dictionary Owner Begrippenwoordenboek DJI Dept X Begrippenlijst Project Y Project Y Mega Glossary ICT-Dept Information chain dictionaries Ketenwoordenboek Strafrecht JustID Ketenwoordenboek JustID Vreemdelingen Justitiethesaurus WODC Data Dictionaries Gegevenswoordenboek MITS ICT-Dept Datadictionary Tulp MIR ICT-Dept … It just does not work! 6

OLD SITUATION NEW SITUATION Various lists Single source of truth Various versions Single source of truth Word-documents Intranet (Internet) Distribution per mail Intranet (Internet) Endless discussions Clear-cut governance Responsibility of IT dept or project Ownership by the business 7

Some How To’s • Keep the dictionary lean and mean – Create a “pocket dictionary” – Example: 1200 key words • Governance: be pragmatic • Ownership within the business! • Use clear, explanatory descriptions – Language of the work force – Avoid legal speak! • Dictionary maintenance is a continuous proces! – Release cycle – One major, four minor releases per year – Major release is approved by senior executives 8

Why SKOS is so great: just enough semantics Justitiabele • Semantic relations (“Detainee”) – Compare one-dimensional lists Adult detainee narrower • A LIMITED number of Juvenile offender STANDARDIZED semantic Foreign national relations Patient in forensic care – Broader, Narrower, Related Term – Semantics is sufficiently vague Criminal Law • Intuitive, easy to understand narrower – Ideal for “pidginization” Penal Institution – Use is far broader than Class Sex Diagrams, ERDs and ontologies Male • Only most relevant info narrower Female • “GENERALIZED CLASSIFICATION” Unknown Undisclosed 9

Why SKOS is so great: tooling 10

Tooling: PoolParty Thesaurus Manager 11

End User View 12

SKOS is an Open Standard: Project Linking 13

http://vocabulary.wolterskluwer.de

prefLabel: Unfallverhütung Alternative labels From Wolters Broaders Kluwer Narrowers Related terms From DBPedia From lod.gesis.org Other thesauri on 15 the web From eurovoc.org

prefLabel: Unfallverhütung Alternative labels From Wolters Broaders Kluwer DJI and the POLICE have very different meanings for the word ARRESTANT Narrowers DO: > RESPECT DIFFERENCES BETWEEN ORGANIZATIONS Related terms > MAKE LEXICOGRAPHIC DIFFERENCES EXPLICIT USING LINKED THESAURI DON’T > TRY MAKING ALL ORGANIZATIONS USE EXACTLY THE SAME LANGUAGE From DBPedia From lod.gesis.org Other thesauri on 16 the web From eurovoc.org

Conclusion and next step: Linking Thesauri to Datamodels • Datamodels: not owned by business – too detailed – too complex – NO ownership at the strategic level • Thesauri – Relatively abstract – Relatively simple – Ownership by the business • SKOS bridges the gap – With datamodels in RDF, the gap can be bridged! 17

THESAURUS AND DOMAINMODELS: SCENARIO 1 THESAURUS Skos:Concept skos:Concept “Detention Facility” rdf:type rdfs:type skos:broader skos:exactMatch eurovoc:C877 skos:prefLabel voc:4862 skos:prefLabel “Penitentiary Institution” skos:Definition “Penal Institution”@en “A prison,[3] gaol or jail[4] is a facility in which inmates are forcibly confined and denied a skos:prefLabel variety of freedoms under the authority of… “място за лишаване от свобода ”@bg owl:sameAs? skos:exactMatch? DOMAIN MODEL :penitentiaryInstitution | Data dictionary rdf:type :isRegisteredAt :pi_Dordrecht :inmate#9818763 :cell “B.23.a” 18

THESAURUS AND DOMAINMODELS: SCENARIO 2 THESAURUS Skos:Concept skos:Concept “Detention Facility” rdfs:type rdf:type eurovoc:C877 skos:prefLabel “Penitentiary Institution” “Penal Institution”@en “A prison,[3] gaol or jail[4] is a facility in which skos:exactMatch inmates are forcibly confined and denied a skos:prefLabel variety of freedoms under the authority of… “място за лишаване от свобода ”@bg DOMAIN MODEL DOMAIN MODEL :penitentiaryInstitution | Data dictionary | Data dictionary rdf:type :isRegisteredAt :pi_Dordrecht :inmate#9818763 :cell “B.23.a” 19

jan.voskuil@taxonic.com www.taxonic.com