polimedia - lodlam challenge 2015

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Page 1: PoliMedia - LODLAM Challenge 2015

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

Page 2: PoliMedia - LODLAM Challenge 2015

How do media cover debates in Dutch Parliament?

Page 3: PoliMedia - LODLAM Challenge 2015
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PoliMedia approach

PoliMedia Portal

Search debate and person

NewspapersKB

TelevisionSound and Vision

RadioKB

Dutch Digital

ParliamentKB

Page 9: PoliMedia - LODLAM Challenge 2015

Link debates to news items

Page 10: PoliMedia - LODLAM Challenge 2015

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.

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Not only USE data

Also GIVE data

Page 16: PoliMedia - LODLAM Challenge 2015

“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

Page 17: PoliMedia - LODLAM Challenge 2015

• 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

Page 18: PoliMedia - LODLAM Challenge 2015

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!

Page 19: PoliMedia - LODLAM Challenge 2015

• 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

Page 20: PoliMedia - LODLAM Challenge 2015

Credits

Martijn Kleppe

Max Kemman

Henri Beunders

Laura Hollink

Damir Juric

Geert Jan Houben

Jaap Blom

Johan Oomen

Financed by Data files

Page 21: PoliMedia - LODLAM Challenge 2015

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

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