polimedia - lodlam challenge 2015

www.polimedia.nlSlide on slideshare: bit.ly/polimedialodlam

How do media cover debates in Dutch Parliament?

PoliMedia approach

PoliMedia Portal

Search debate and person

NewspapersKB

TelevisionSound and Vision

RadioKB

Dutch Digital

ParliamentKB

Link debates to news items

Link debates to news itemsIntuition 1: The news item contains a topic a/o name of a politician and is published within a week after a debate

Intuition 2: The more overlap in topics and named entities, the more probably there is a link.

Not only USE data

Also GIVE data

“Give me all fragments of debates with over 60 related news items”

SELECT ?speech ?no_newsitems {{ SELECT ?speech (COUNT(?news) AS ?no_news_items)WHERE{

?speech <http://purl.org/linkedpolitics/nl/polivoc#coveredAt> ?news .

}GROUP BY ?speech }FILTER (?no_news_items > 60) }

SPARQL Endpoint

• Yeah! It works (but no television)

• Not perfect

• But still ok (recall: 62%; precision: 80%)

• It is open for everyone: www.polimedia.nl

• + via a Sparql Endpoint

• People actually use it

Results

NRC Handelsblad, Ewoud Sander, Voor al haar mantelzorgen, 14 April 2014

“Another digital source I often use is PoliMedia.nl”

Yeah! An article in NRC HANDELSBLAD!

• Yeah! It works (but no television)

• Not perfect

• But still ok (recall: 62%; precision: 80%)

• It is open for everyone: www.polimedia.nl

• + via a Sparql Endpoint

• People actually use it

• We want more: social media, television, recent data

Results

Credits

Martijn Kleppe

Max Kemman

Henri Beunders

Laura Hollink

Damir Juric

Geert Jan Houben

Jaap Blom

Johan Oomen

Financed by Data files

www.polimedia.nlSlide on slideshare: bit.ly/polimedialodlam

Thanks!(for listening, nominating us and having us here ;) )