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title: Describing Knowledge Organization Systems in BARTOC and JSKOS shorttitle: Describing KOS in BARTOC & JSKOS author: Andreas Ledl, Jakob Voß, Uma Balakrishnan date: 2016-06-23 place: TKE 2016, Copenhagen ...

Project coli-conc

System overview

\fontsize{9pt}{10.8}\selectfont

\begin{tikzpicture} \tikzstyle{box}=[align=center,draw,shape=rectangle,thick] %\tikzstyle{arrow}=[->[scale=1.5],thick]

\node[box] (db) {Database &\Web Service}; \node[box,left=14mm of db.west] (jskos) {\textbf{JSKOS}}; \draw[->] (jskos) to node[above] {import} (db); \matrix (m) [matrix of nodes,column 1/.style={anchor=base east},left=1cm of jskos.west] { GND \ RVK \ DDC \ Geonames \ BARTOC \ Mappings \ SKOS/RDF \ ... \ };

\node[above left=6mm of jskos,anchor=west] {convert}; \draw[->,out=0,in=180] (m-1-1) to (jskos) (m-2-1) to (jskos) (m-3-1) to (jskos) (m-4-1) to (jskos) (m-5-1) to (jskos) (m-6-1) to (jskos) (m-7-1) to (jskos) (m-8-1) to (jskos);

\matrix (apps) [column 1/.style={anchor=base west},right=12mm of db.east,row sep=2mm] { \node {applications}; \ \node[box] (app1) {terminology\browsing}; \ \node[box] (app2) {terminology\register}; \ \node[box] (app3) {mapping\query}; \ \node[box] (app4) {synonym\service}; \ \node[box] (app5) {...}; \ };

\draw[->,out=0,in=180] (db) to (app1); \draw[->,out=0,in=180] (db) to (app2); \draw[->,out=0,in=180] (db) to (app3); \draw[->,out=0,in=180] (db) to (app4); \draw[->,out=0,in=180] (db) to (app5);

\node[above right=6mm and 7mm of db,anchor=east] {JSKOS-API};

\matrix (e) [matrix of nodes,column 1/.style={anchor=base west},below=15mm of db,anchor=west] { JSKOS \ RDF \ }; \draw[->,out=-90,in=180] (db) to node[anchor=east] {export} (e-1-1); \draw[->,out=-90,in=180] (db) to (e-2-1);

\end{tikzpicture}

JSKOS data format

Requirement: uniform access to KOS data

  • based on RDF (SKOS & Dublin Core)
    \ldots but more restrictive (unification)
  • based on JSON-LD
    \ldots extended by language ranges and closed world statements

main goal: easy use of KOS data in web applications

Specified at https://gbv.github.io/jskos/

JSKOS beyond JSON-LD: closed world statements

narrower concepts may exist (open world assumption)

  • { }{.json}

$\exists$: narrower concepts exist (but not included here)

  • { "narrower": [ null ] }{.json}

$\nexists$: no narrower concepts exist

  • { "narrower": [] }{.json}

language ranges state that more labels in other languages exist

  • {"en": "english label", "-": "..." }{.json}

JSKOS beyond SKOS: data and object types

data types object types
URI Concept
URL Concept Type
date Concept Scheme
list Registry
set Concordance
language range Concept Mapping
language map Concept Bundle

Concept example from GeoNames

http://sws.geonames.org/614540/

JSKOS concept example from GeoNames (abbreviated)

\fontsize{10pt}{12}\selectfont

{
  "type": ["http://www.w3.org/2004/02/skos/core#Concept"],
  "uri": "http://sws.geonames.org/614540/",
  "inScheme": [ 
    { "uri": "http://bartoc.org/en/node/15" }
  ],
  "prefLabel": {
    "en": "Georgia",
    "fr": "Géorgie", 
    "de": "Georgien", 
    "-": "..."
  },
  "broader": [ 
    { "uri": "http://sws.geonames.org/6255147/" } 
  ],
  ...

BARTOC in JSKOS

KOS can also be expressed in JSKOS

BARTOC example: Eurovoc

JSKOS BARTOC example: Eurovoc record (abbreviated)

\fontsize{10pt}{12}\selectfont

{
  "type": ["http://www.w3.org/2004/02/skos/core#ConceptScheme"],
  "uri": "http://bartoc.org/en/node/15",
  "url": "http://eurovoc.europa.eu/",
  "identifier": [ 
     "http://www.wikidata.org/entity/Q1370467" 
  ],
  "prefLabel": {
    "en": "Multilingual Thesaurus of the European Union"
  },
  "altLabel": { "en": [ "EuroVoc" ] },
  "languages": [ "bg", "ca", "cs", "da", "de", "el",
                 "en", "es", "et", "fi", "fr", 
  ...

JSKOS-API/ELMA

  • HTTP API to query KOS data in JSKOS

  • Entity Lookup Microservice API (ELMA)
    as most relevant subset of JSKOS-API

    entity lookup : ?uri=http://sws.geonames.org/614540/

    entity search : ?search=Georgia (labels, notations, notes...)

  • more use cases will be covered by full JSKOS-API

  • public demo of terminology wrappers: https://jskos-php-examples.herokuapp.com/
    (BARTOC, Wikidata, GND, ORCID, GeoNames, VIAF \ldots)

Terminology Browsing

Example: Dewey Decimal Classification (DCC)

\fontsize{9pt}{10.8}\selectfont

DDC in BARTOC (http://bartoc.org/en/node/241) $\rightarrow$ concept scheme

{
  "type": ["http://www.w3.org/2004/02/skos/core#ConceptScheme"],
  "uri": "http://bartoc.org/en/node/241",
  "prefLabel": { "en": "Dewey Decimal Classification" }
}

DDC in MARCXML (MARC 21 format for classification data) $\rightarrow$ concepts

{
  "type": ["http://www.w3.org/2004/02/skos/core#Concept"],
  "uri": "http://dewey.info/class/612.112",
  "prefLabel": { "en": "leucocytes" },
  "notation": [ "612.112" ],
  "inScheme": [ { "uri": "http://bartoc.org/en/node/241" } ]
}

Mapping Database

JSKOS mapping example

\fontsize{9pt}{10.8}\selectfont

{ 
  "creator": { "notation": [ "VZG" ] },
  "mappingMethod": "...",
  "fromScheme": {
     "uri": "http://bartoc.org/en/node/241",
     "notation": [ "DDC" ]
  },
  "from": { "members" : [
    { "uri:": "http://dewey.info/class/612.112" }
  ] },
  "toScheme" : {
     "uri": "http://bartoc.org/en/node/533",
     "notation": [ "RVK" ]
  },
  "to": { "members" : [
    { "uri": "http://uri.gbv.de/terminology/rvk/WW8844" }
  ] }
}

Other possible applications

  • semantic tagging of documents with identified concepts:
    http://sws.geonames.org/614540/ $\Rightarrow$ "Georgia"
  • statistical analysis of terminologies:
    compare size, hierachy, density of links...
  • enrichment of concepts from multiple KOS
  • ...

foster the visibility, availability and usefulness of KOS in general

Thanks! Questions?

Feedback and contribution is appreciated!