Using Semantic Web Technologies     to Facilitate XBRL-based  Financial Data Comparability  1st Finance and Economics on t...
Introduction• Explore Semantic Web technologies for  financial information• Most public financial data available as  XBRL•...
Approach• Reuse XBRL data and schemas• Facilitate round-trip:  – XBRL  SW XBRL• Showcase Semantic Web benefits• Test dat...
ReDeFer• Part of the Rhizomik initiative• ReDeFer (in and out Semantic Web)  –   RDF2HTML+RDFa  –   RDF2SVG  –   XML2RDF  ...
XBRL XML to RDF• ReDeFer XML2RDF,  model XML tree using triples   – xsd:element and xsd:atribute  rdf:Property   – xbrli:...
XBRL XSD to OWL    • XBRL Schemas: XBRL 2.1, US GAAP1, PGC…    • ReDeFer XSD2OWL            XSD2OWL mappings          XML ...
XML2RDF plus XSD2OWL• Enrich RDF with links to classes for  corresponding XSD complexTypes:
Semantic XBRL• Dataset size (from US SEC)  – May 2012: 125,55 million triples from 29342 XBRL filings  – Available from ht...
Comparability• Generate semantic links among accounting  principles (XBRL taxonomies)  – Automatic ontology alignment tool...
DESCRIBE ?rWHERE {?r aifrs:NoncurrentAssets }DESCRIBE ?rWHERE {?r aifrs:OtherNoncurrentFinancialAssets}
Conclusions• XBRL tools: for financial information  edition and maintenance (formulae,…)          XML2RDF          XSD2OWL...
Future Work• Generate mappings across:  – Different filings for the same company  – Different companies  – Different accou...
Thank you for your attention  Héctor Carretié1, Beatriz Torvisco1, Roberto García2                            Contact: ...
Using Semantic Web Technologies to Facilitate XBRL-based Financial Data Comparability
Using Semantic Web Technologies to Facilitate XBRL-based Financial Data Comparability
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Using Semantic Web Technologies to Facilitate XBRL-based Financial Data Comparability

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Using Semantic Web Technologies to Facilitate XBRL-based Financial Data Comparability

  1. 1. Using Semantic Web Technologies to Facilitate XBRL-based Financial Data Comparability 1st Finance and Economics on the Semantic Web Workshop, FEOSW’12 27 May 2012, Crete, Greece Héctor Carretié1, Beatriz Torvisco1, Roberto García2 1 Finances and Accounting Department Universidad Rey Juan Carlos, Spain 2 HCI and Data Integration Research Group Universitat de Lleida, Spain
  2. 2. Introduction• Explore Semantic Web technologies for financial information• Most public financial data available as XBRL• Reuse this data, map XBRL to RDF – Apply generic mapping: ReDeFer • XSD2OWL, XML2RDF• Once as RDF+OWL, improve comparability using semantic links
  3. 3. Approach• Reuse XBRL data and schemas• Facilitate round-trip: – XBRL  SW XBRL• Showcase Semantic Web benefits• Test data: – SEC’s XBRL – Spanish CNMV XBRL
  4. 4. ReDeFer• Part of the Rhizomik initiative• ReDeFer (in and out Semantic Web) – RDF2HTML+RDFa – RDF2SVG – XML2RDF – XSD2OWL Use cases: MPEG-7, MPEG-21,…
  5. 5. XBRL XML to RDF• ReDeFer XML2RDF, model XML tree using triples – xsd:element and xsd:atribute  rdf:Property – xbrli:id and xbrli:identifier  rdf:Resource ID – Other resources, anonymous Rendered by RDF2SVG
  6. 6. XBRL XSD to OWL • XBRL Schemas: XBRL 2.1, US GAAP1, PGC… • ReDeFer XSD2OWL XSD2OWL mappings XML Schema OWL rdf:Propertyelement | attribute owl:DatatypeProperty owl:ObjectPropertyelement@substitutionGroup rdfs:subPropertyOfelement@type rdfs:rangecomplexType owl:ClasscomplexType//element owl:Restrictionextension@base | rdfs:subClassOfrestriction@base@maxOccurs, owl:maxCardinality,@minOccurs owl:minCardinalitysequence, owl:intersectionOf,choice owl:unionOf Core classes and properties for XBRL Instance 1 Ontologies available from http://rhizomik.net/ontologies/bizontos
  7. 7. XML2RDF plus XSD2OWL• Enrich RDF with links to classes for corresponding XSD complexTypes:
  8. 8. Semantic XBRL• Dataset size (from US SEC) – May 2012: 125,55 million triples from 29342 XBRL filings – Available from http://rhizomik.net/semanticxbrl/
  9. 9. Comparability• Generate semantic links among accounting principles (XBRL taxonomies) – Automatic ontology alignment tools – Experts input – Numeric analysis• Experiment: – Telefonica S.A. Balace Sheet 2008 and 2009 • XBRL for Spanish CNMV • XBRL for US SEC
  10. 10. DESCRIBE ?rWHERE {?r aifrs:NoncurrentAssets }DESCRIBE ?rWHERE {?r aifrs:OtherNoncurrentFinancialAssets}
  11. 11. Conclusions• XBRL tools: for financial information edition and maintenance (formulae,…) XML2RDF XSD2OWL• Semantic Web tools: data integration, cross querying,… COMPARABILITY – Across filings, companies, accounting principles,…
  12. 12. Future Work• Generate mappings across: – Different filings for the same company – Different companies – Different accounting principles (taxonomies)• Compute common ratios• Develop demo webpps: – E.g.: show accounting data for ownership/subsidiary networks of companies, ratios…
  13. 13. Thank you for your attention Héctor Carretié1, Beatriz Torvisco1, Roberto García2 Contact: roberto.garcia@udl.cat http://rhizomik.net/~roberto/ 1 Finances and Accounting Department Universidad Rey Juan Carlos, Spain 2 HCI and Data Integration Research Group Universitat de Lleida, Spain

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