ldow2014 real world ldvm
DESCRIPTION
Linked Data Visualizations based on data from the CzLOD cloud.TRANSCRIPT
Application of the Linked Data Visualization Model on Real World Data from the Czech LOD Cloud
Jakub Klímek
Jiří Helmich
Martin Nečaský
XML and Web Engineering Research GroupFaculty of Mathematics and PhysicsCharles University, PragueCzech Republic
CzLOD cloud
OpenData.cz since 2012 100M triples RUIAN 600M triples Virtuoso 7 instance
http://linked.opendata.cz/sparql
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CzLOD cloud
Business entities ARES – Business registry COI.CZ – Czech Trade Inspection Agency Research projects
Geographical data RUIAN – territorial identification
linked to LAU & NUTS Geocoding results
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CzLOD cloud
Governmental datasets OVM – ministries, cities, notaries, ...
• Agendas (opening hours) Laws - decisions of the Czech Supreme court
Statistical datasets Demography Budgets Exchange rates – European Central Bank
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LDVM
Abstract process 4 stages 3 transformation types 3 operator types
Adapted for RDF Input transformed to RDF Internally works with RDF Existing visualizers
accept proprietaryformats
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LDVM stages
Source RDFand non-RDF data Data transformation
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LDVM stages
Analytical abstraction Relevant data extraction
using SPARQL operators Analyzers Reusability
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LDVM stages
Visualization abstraction Transformers Reusing concepts e.g. skos:broader
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LDVM stages
View Visualizers
• User configuration(rotate, scale, zoom, etc.)
End-users
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LDVM components compatibility
Components compatibility Input signature
• SPARQL ASK Output data sample
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LDVM Demonstration
Case: Inspections of COI.CZ Input signature of an analyzer:
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Compatibility Demonstration
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;
Compatibility demonstration II
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LDVM Demonstration
Visualizers (e.g. d3js, jQuery flot, etc.)
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Compatibility demonstration
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CzLOD – COI.CZ
Check actions analyzer
Hierarchy transformer
GEO transformer
CzLOD – CAFIA
Implementation: Payola
Analyzer editor with analytical plugins Collaborative features
Inner analyzers Custom plugins One-click solution for non-expert users
Caching analyzer results
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Links
http://vis.payola.cz/gmaps-ovm http://vis.payola.cz/coi-treemap https://github.com/payola/Payola
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Thank you for your attentionJakub Klímek
Jiří Helmich
Martin Nečaský
http://xrg.cz | [email protected] XML and Web Engineering Research GroupFaculty of Mathematics and PhysicsCharles University, PragueCzech Republic