Towards A Reliable Ground-Truth For Biased Language Detection

Reference texts such as encyclopedias and news articles can manifest biased language when objective reporting is substituted by subjective writing. Existing methods to detect bias mostly rely on annotated data to train machine learning models. However, low annotator agreement and comparability is a...

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Bibliographic Details
Published in:2021 ACM/IEEE Joint Conference on Digital Libraries (JCDL) pp. 324 - 325
Main Authors: Spinde, Timo, Krieger, David, Plank, Manuel, Gipp, Bela
Format: Conference Proceeding
Language:English
Published: IEEE 01.09.2021
Subjects:
Crowdsourcing
Data integrity
Dataset
Encyclopedias
Machine learning
Media
Media Bias
News Slant
Survey
Training
Writing
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Summary:Reference texts such as encyclopedias and news articles can manifest biased language when objective reporting is substituted by subjective writing. Existing methods to detect bias mostly rely on annotated data to train machine learning models. However, low annotator agreement and comparability is a substantial drawback in available media bias corpora. To evaluate data collection options, we collect and compare labels obtained from two popular crowdsourcing platforms. Our results demonstrate the existing crowdsourcing approaches' lack of data quality, underlining the need for a trained expert framework to gather a more reliable dataset. By creating such a framework and gathering a first dataset, we are able to improve Krippendorff's a = 0.144 (crowdsourcing labels) to a = 0.419 (expert labels). We conclude that detailed annotator training increases data quality, improving the performance of existing bias detection systems. We will continue to extend our dataset in the future.
DOI:10.1109/JCDL52503.2021.00053