Improving the selection of news reports for event coding using ensemble classification

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dc.contributor.authorCroicu, Mihai
dc.contributor.authorWeidmann, Nils B.
dc.date.accessioned2016-02-02T14:58:41Z
dc.date.available2016-02-02T14:58:41Z
dc.date.issued2015eng
dc.description.abstractManual coding of political events from news reports is extremely expensive and time-consuming, whereas completely automatic coding has limitations when it comes to the precision and granularity of the data collected. In this paper, we introduce an alternative strategy by establishing a semi-automatic pipeline, where an automatic classification system eliminates irrelevant source material before further coding is done by humans. Our pipeline relies on a high-performance supervised heterogeneous ensemble classifier working on extremely unbalanced training classes. Deployed to the Mass Mobilization on Autocracies database on protest, the system is able to reduce the number of source articles to be human-coded by more than half, while keeping over 90% of the relevant material.eng
dc.description.versionpublishedeng
dc.identifier.doi10.1177/2053168015615596eng
dc.identifier.ppn455042357
dc.identifier.urihttps://kops.uni-konstanz.de/handle/123456789/32815
dc.language.isoengeng
dc.rightsAttribution-NonCommercial 3.0 Unported
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/
dc.subject.ddc320eng
dc.titleImproving the selection of news reports for event coding using ensemble classificationeng
dc.typeJOURNAL_ARTICLEeng
dspace.entity.typePublication
kops.citation.bibtex
@article{Croicu2015Impro-32815,
  year={2015},
  doi={10.1177/2053168015615596},
  title={Improving the selection of news reports for event coding using ensemble classification},
  number={4},
  volume={2},
  journal={Research and Politics},
  author={Croicu, Mihai and Weidmann, Nils B.}
}
kops.citation.iso690CROICU, Mihai, Nils B. WEIDMANN, 2015. Improving the selection of news reports for event coding using ensemble classification. In: Research and Politics. 2015, 2(4). eISSN 2053-1680. Available under: doi: 10.1177/2053168015615596deu
kops.citation.iso690CROICU, Mihai, Nils B. WEIDMANN, 2015. Improving the selection of news reports for event coding using ensemble classification. In: Research and Politics. 2015, 2(4). eISSN 2053-1680. Available under: doi: 10.1177/2053168015615596eng
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kops.relation.uniknProjectTitleSofja Kovalevskaja-Preis: The Web as a Curse or Blessing? Ethnic Mobilization in the Information Age
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