Naslov
Getting the Agenda Right: Measuring Media Agenda using Topic Models

Autori
Korenčić, Damir ; Ristov, Strahil ; Šnajder, Jan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 2015 Workshop on Topic Models: Post-Processing and Applications / - : The Association for Computing Machinery (ACM), 2015, 61-66

ISBN
978-1-4503-3784-7

Skup
2015 Workshop on Topic Models: Post-Processing and Applications

Mjesto i datum
Melbourne, Australija, 19.10.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Agenda setting; Agenda measuring; News media analysis; Topic modeling; Document tagging; Multilabel classification

Sažetak
Agenda setting is the theory of how issue salience is transferred from the media to media audience. An agenda-setting study requires one to define a set of issues and to measure their salience. We propose a semi-supervised approach based on topic modeling for exploring a news corpus and measuring the media agenda by tagging news articles with issues. The approach relies on an off-the-shelf Latent Dirichlet Allocation topic model, manual labeling of topics, and topic model customization. In preliminary evaluation, the tagger achieves a micro F1-score of 0.85 and outperforms the supervised baselines, suggesting that it could be successfully used for agenda-setting studies.

Izvorni jezik
Engleski

Znanstvena područja
Računarstvo

POVEZANOST RADA