Ghislain Atemezing / @gatemezingRaphaël Troncy / @rtroncyTowards InteroperableVisualization Applications OverLinked Data
Goal and Agenda Goal: Describe common patterns of visualizationapplications from Government Data Portals to makethem reus...
An application is worth a billion triples Use case 1: “Give me applications in GovernmentLinked Data platforms in the dom...
Visualization Apps in Government Portals Study of applications consuming Open DataCountries: UK (7), USA (3) and France ...
Visualization Apps in Government Portals2013/04/10 European Data Forum (EDF) - 2013, Dublin - 5Applications Domain Country...
Linked Data Applications Categories (*) Generic applicationsUsed to browse any RDF graph(e.g: Tabulator, OpenLink Data E...
Relevant Features in Visualization Tools Data format given as input (csv, xml, shp, rdf, etc.) Data access(API, dump, et...
Classes of Visualization Tools 2 Classes of visualization toolsThose operating over RDF dataThose operating over struct...
Visual Tools with API accessTools Data formats Type of Views LicenseChoosel xls, csv Text, Map, BarChart OpenMany Eyes xls...
Visual Tools using RDFTools Type of views License Data AccessFresnel Properties, labels Open -Spark Charts, simple table O...
Describing an Application: Opendatacom2013/04/10 European Data Forum (EDF) - 2013, Dublin - 11Scope/Domain: Department for...
Describing an Application: publicspending.gr2013/04/10 European Data Forum (EDF) - 2013, Dublin - 12Scope/Domain: Public s...
A vocab to describe Apps2013/04/10 European Data Forum (EDF) - 2013, Dublin - 13dvia: Applicationdct:titledvia:description...
Conclusion and Future Work Use and evaluate DVIAScrap and reconcile data from apps contests:see the upcoming catalog fro...
Questions?Thanks for your attention!
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EDF2013: Selected Talk, Ghislain Atemezing: Towards Interoperable Visualization Applications Over Linked Data

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Selected talk of Ghislain Atemezing at the European Data Forum 2013, 10 April 2013 in Dublin, Ireland: Towards Interoperable Visualization Applications Over Linked Data

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EDF2013: Selected Talk, Ghislain Atemezing: Towards Interoperable Visualization Applications Over Linked Data

  1. 1. Ghislain Atemezing / @gatemezingRaphaël Troncy / @rtroncyTowards InteroperableVisualization Applications OverLinked Data
  2. 2. Goal and Agenda Goal: Describe common patterns of visualizationapplications from Government Data Portals to makethem reusable and interoperable The importance of visualization in Linked Data Show some use cases Survey of Apps in Government Data Portals On Reusable Applications A survey of visualization tools used by Open Data Apps Search for common and reusable features DVIA: a vocabulary for Describing VIsualization Apps Conclusion and Future Work2013/04/10 European Data Forum (EDF) - 2013, Dublin - 2
  3. 3. An application is worth a billion triples Use case 1: “Give me applications in GovernmentLinked Data platforms in the domain of taxes” Use case 2: “Find me apps running on Android indata.uk.gov for finding the nearest drugstores” Use case 3: “How many free or inexpensiveapplications are available using US datasets inHealth and Insurance domains”2013/04/10 European Data Forum (EDF) - 2013, Dublin - 3
  4. 4. Visualization Apps in Government Portals Study of applications consuming Open DataCountries: UK (7), USA (3) and France (3)Number of applications: (13)Domain: education, health, transport, government, city,housing, criminality, foreign aid Classification dimensionsPlatform (web, mobile), data sources, which views areavailable (maps, charts, timeline, etc.)URL policy for identifying data objectsLicense for the application / for the dataCommercial / non-commercial2013/04/10 European Data Forum (EDF) - 2013, Dublin - 4
  5. 5. Visualization Apps in Government Portals2013/04/10 European Data Forum (EDF) - 2013, Dublin - 5Applications Domain CountryUse RDFdataPlatform ViewsUK Crime Criminality UK no WebMap, chart, pie chart,tabularUK Pharmacy Drugstore UK no iPhone, Android MapNumberhoodLocal areadynamicsUK no IPhonechart, histogram, tabularviewsBUSit London Transport UK no Web, Mobile MapUK School Finder Education UK no Web Map, tabular, histogramWhere-can-I-Live Housing UK no Web Map, chartOpen DataCommunitiesLocalgovernmentUK yes Web Graph, MapFlyOnTime Transport US no WebPie chart, histogram,tabularWhite House VisitorSearchGovernment US yes Web Bar chart, pie chart, tabularComparing US-USAID vs UK-DFIDGlobal Foreign AidForeign Aid US yes Web Map, pie chartFourmisante Health France no Web MapMaVilleVuDuCiel City France no Web Map, facet viewsHomenGo Housing France no Web Map, tabular views
  6. 6. Linked Data Applications Categories (*) Generic applicationsUsed to browse any RDF graph(e.g: Tabulator, OpenLink Data Explorer) Vocabulary-specific applicationsBuilt around particular vocabularies(e.g.: FaceBook Social Graph API, IsaViz, CubeViz) Data-specific applications (mashups)Built around particular datasets(e.g. Where does my money go,IOGDS: International Open Government Dataset Search)(*) Classification according to:Jeni Tennison : http://www.jenitennison.com/blog/node/1262013/04/10 European Data Forum (EDF) - 2013, Dublin - 6
  7. 7. Relevant Features in Visualization Tools Data format given as input (csv, xml, shp, rdf, etc.) Data access(API, dump, etc.) Language code Type of view External Libraries License Metadata:author, organisation2013/04/10 European Data Forum (EDF) - 2013, Dublin - 7
  8. 8. Classes of Visualization Tools 2 Classes of visualization toolsThose operating over RDF dataThose operating over structured data 5 features to assess a visualization toolUsabilityVisualization capabilities (type of views)Data accessibility (API, endpoint, dump)DeploymentExtensibility2013/04/10 - 8European Data Forum (EDF) - 2013, Dublin
  9. 9. Visual Tools with API accessTools Data formats Type of Views LicenseChoosel xls, csv Text, Map, BarChart OpenMany Eyes xls, plain text,htmlCharts, trees,graphs, mapsIBMD3.js csv, svg,GeoJsonCharts, trees,graphs, mapsOpenGoogleVisualization APIJson, csv Many charts, controland dashboardOpenData Publica DSPL Map, graph,histogram, tableProprietaryGeoAPI gml, kml, gpx Map views Free for noncommercial use2013/04/10 European Data Forum (EDF) - 2013, Dublin - 9
  10. 10. Visual Tools using RDFTools Type of views License Data AccessFresnel Properties, labels Open -Spark Charts, simple table Open SPARQLLDA - Open SPARQLSemWeb Import Graph, node views CECILL-B SPARQLCONSTRUCTFacet SpatialSemanticBrowsing WidgetsMap, facet views Open SPARQLSgvizler Map, charts, timeline,sparklineOpen SPARQL SELECTVisual Box Map, charts, timeline,graphsOpen SPARQL SELECTMap4rdf Map, facet views Open SPARQL2013/04/10 European Data Forum (EDF) - 2013, Dublin - 10
  11. 11. Describing an Application: Opendatacom2013/04/10 European Data Forum (EDF) - 2013, Dublin - 11Scope/Domain: Department for Communities and LocalGovernment, datasets accessDescription: visualize available datasets (finance, housing,deprivation, geography) by authorities or postcode.On the dashboard, it provides graphs showing the nationaldistribution of a district and how the values for this localauthority compare with others in England.Supported Platform: WebURL Policy: http://{domain}/id/{...} with redirection to thecorresponding document at: http://{domain}/doc/{...}.Hampshire County Council is:http://opendatacommunities.org/id/county-council/hampshireData Sources: 36 datasets from DCLG, AdministrativeGeography and Postcodes from Ordnance Survey.Type of View: Graph, Map views.Visualization Tools: google visualization API, raphael.jsLicense: Open Government license [OGL]Business Value: Non commercial
  12. 12. Describing an Application: publicspending.gr2013/04/10 European Data Forum (EDF) - 2013, Dublin - 12Scope/Domain: Public spending, GovernmentDescription The application helps visualizing themost characteristic facts of the Greek publicspending, interconnected to foreign expenditure andother data.Supported Platform: WebURL Policy:http://publicspending.medialab.ntua.gr/en/{NAME-CHART}.php. E.g:http://publicspending.medialab.ntua.gr/en/toppayersday.phpData Sources: http://opendata.diavgeia.gov.fr; Greek Taxdata (TAXIS).Type of View: Bubble tree, column and bar chartsVisualization Tools: HighchartsJS, Bubble TreeJSJqueryJS ; RaphaelJSLicense: Open Government license [OGL]Business Value: Non commercial ( Free)
  13. 13. A vocab to describe Apps2013/04/10 European Data Forum (EDF) - 2013, Dublin - 13dvia: Applicationdct:titledvia:descriptiondvia:keyworddvia:urldct:creatordvia:businessValuedvia:scopedvia:viewdctype:Softwaredvia: Platformdct:titledvia:systemdvia:preferredNavigatordvia:alternativeNavigatordvia: VisualTooldct:titledct:descriptiondvia:accessUrldvia: downloadUrldcat: Datasetdct: titledcat: accessURLdct:referencesdcat: keywordorg:OrganizationPrefixes:@prefix dct: <http://purl.org/dc/terms/>.@prefix dcat: <http://www.w3.org/ns/dcat#>.@prefix dctype: <http://purl.org/dc/dcmitype/>.@prefix org: <http://www.w3.org/ns/org#>.@prefix dvia: <http://data.eurecom.fr/ontology/dvia#>.DVIA vocabulary: http://data.eurecom.fr/ontology/dvia#
  14. 14. Conclusion and Future Work Use and evaluate DVIAScrap and reconcile data from apps contests:see the upcoming catalog from Apps4EuropeInterconnect application descriptions that useheterogeneous datasets in order to reuse tools and views Detect patterns for visualizationInspect datasets to detect top categories:persons, organizations, events, geo, time series, statistics, etc.Inspect “sameAs” links between datasets:focus visualization on properties attached to interconnected dataobjectsGenerate automatically visualizations based on patterns2013/04/10 European Data Forum (EDF) - 2013, Dublin - 14
  15. 15. Questions?Thanks for your attention!

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