news fact-checking: one practical application of linked statistics
DESCRIPTION
This is the poster for SemStat at ISWC 2014 in Riva del Garda. SemStat 2014 was the "Second International Workshop on Semantic Statistics". Our poster is about a use case on fact-checking using the potential of Linked Statistics.TRANSCRIPT
News Fact-checking:One Practical Application of Linked Statistics
33.133.1
LinkedSTAT http://linkedstat.spaziodati.eu
ISTAT SDMX SOAP Web Servicehttp://sdmx.istat.it/WS_T/NsiStdV20Service.asmx
SDMX-ML SDMX-to-RDF XSL transformationshttps://github.com/csarven/linked-sdmx
VirtuosoQuad Store
http://www.ladige.it/articoli/2012/07/17/poverta-trentino-resta-isola-felice
NEWS FACT-CHECKING is the process of verifying accuracy of facts in publications
Fact-checking is a tedious, time-, resource-consuming and error-prone process
* The original text is:“Nel 2011, secondo i dati Istat, ... la provincia di Trento (3,4%), la Lombardia (4,2%), la Valle d'Aosta e il Veneto (4,3%) presentano i valori più bassi dell'incidenza di povertà [relativa].”
“In 2011, according to Istat, ...the province of Trento (3.4%),Lombardy (4.2%), Valle d'Aosta and Veneto (4.3%) have the lowest value of the incidence of [relative] poverty.” *
RDF/XML
RDF Data Cube VocabularyPROV-O OntologySKOS and XKOSSDMX-RDF, ...
Fact-checking: How to find a right set of dimension/valuepairs for a given fact to construct queries for it?
ISTAT: new possibilities to disseminate statistics andfacilitate data certification.
●DBpedia/Wikipedia: automatic updates of statistical data
“In 2011, according to Istat, ... the province of Trento (3.4%) ... value of the incidence of [relative] poverty.”
Dimension Value
territory
linked-istat-property:REF_AREA
“Provincia Autonoma Trento”
http://linkedstat.spaziodati.eu/code/1.1/CL_REFAREA/ITD2
reference time period
linked-istat-property:TIME_PERIOD
“2011”
<http://reference.data.gov.uk/id/year/2011>
statistical indicator
linked-istat-property:IND_TYPE
“incidenza di povertà relativa familiare”
<http://linkedstat.spaziodati.eu/code/1.1/CL_AGGREG_FAMIGLIE/INCID_POVREL_FAM>
http://linkedstat.spaziodati.eu/sparql
MANUAL FACT-CHECKING – review of the citations' content● dedicated fact-checking departments- only major infrequent periodicals can afford them (Der Spiegel, The Guardian, Esquire, Forbes); no budget in small publishing organisations- impractical for frequent publications
● nonprofit fact-checking organisations (FactCheck.org, PolitiFact.com)● crowd-checking platforms (FactCheckEU.org)
Tatiana Tarasova [email protected] SpazioDati, Trento, Italy
“Poverty, Trentino remains a happy island” l'Adige.it, 17 Luglio 2012
What if the facts would be linked to the underlying data sources?
publishing ISTAT http://dati.istat.it/ as Linked Data
http://dati.istat.it/
All the queries and scripts produced during the LinkedSTAT project are available athttps: //www.assembla.com/spaces/linked-istat/
Fact-checking with LinkedSTAT
SELECT DISTINCT ?dataset ?title ?structureWHERE {?dataset a qb:DataSet .?dataset dcterms:title ?title .FILTER(contains(str(?title), "Incidenza di povertà relativa"))?dataset qb:structure ?structure .}
SELECT DISTINCT ?codeList ?p ?oWHERE {<http://linkedstat.spaziodati.eu/property/REF_AREA> qb:codeList ?codeList .?codeList ?p ?o}
SELECT DISTINCT ?obs ?valueWHERE {?obs rdf:type qb:Observation .?obs linked-istat-property:REF_AREA <http://linkedstat.spaziodati.eu/code/1.2/CL_REFAREA/ITD2> .?obs linked-istat-property:TIME_PERIOD <http://reference.data.gov.uk/id/year/2011> .?obs linked-istat-property:IND_TYPE <http://linkedstat.spaziodati.eu/code/1.1/CL_AGGREG_FAMIGLIE/INCID_POVREL_FAM> .?obs linked-istat-property:OBS_VALUE ?value .}
Step1: retrieve the structure of the relevant dataset
Step2: retrieve code lists that provide values
Step3: retrieve the value of the required observation
Future