Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

6-2020

Abstract

In this work, we empirically validate three common assumptions in building political media bias datasets, which are (i) labelers' political leanings do not affect labeling tasks, (ii) news articles follow their source outlet's political leaning, and (iii) political leaning of a news outlet is stable across different topics. We build a ground-truth dataset of manually annotated article-level political leaning and validate the three assumptions. Our findings warn that the three assumptions could be invalid even for a small dataset. We hope that our work calls attention to the (in)validity of common assumptions in building political media bias datasets.

Discipline

Numerical Analysis and Scientific Computing

Research Areas

Data Science and Engineering

Publication

Proceedings of the International AAAI Conference on Web and Social Media

First Page

939

Last Page

943

ISBN

9781577358237

Publisher

AAAI

City or Country

California, USA

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