Uncovering the essence of diverse media biases from the semantic embedding space

Hong Huang (), Hua Zhu, Wenshi Liu, Hua Gao, Hai Jin and Bang Liu
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Hong Huang: National Engineering Research Center for Big Data Technology and System
Hua Zhu: National Engineering Research Center for Big Data Technology and System
Wenshi Liu: School of Computer Science and Technology
Hua Gao: Huazhong University of Science and Technology
Hai Jin: National Engineering Research Center for Big Data Technology and System
Bang Liu: Université de Montréal & Mila & Canada CIFAR AI Chair

Palgrave Communications, 2024, vol. 11, issue 1, 1-12

Abstract: Abstract Media bias widely exists in the articles published by news media, influencing their readers’ perceptions, and bringing prejudice or injustice to society. However, current analysis methods usually rely on human efforts or only focus on a specific type of bias, which cannot capture the varying magnitudes, connections, and dynamics of multiple biases, thus remaining insufficient to provide a deep insight into media bias. Inspired by the Cognitive Miser and Semantic Differential theories in psychology, and leveraging embedding techniques in the field of natural language processing, this study proposes a general media bias analysis framework that can uncover biased information in the semantic embedding space on a large scale and objectively quantify it on diverse topics. More than 8 million event records and 1.2 million news articles are collected to conduct this study. The findings indicate that media bias is highly regional and sensitive to popular events at the time, such as the Russia-Ukraine conflict. Furthermore, the results reveal some notable phenomena of media bias among multiple U.S. news outlets. While they exhibit diverse biases on different topics, some stereotypes are common, such as gender bias. This framework will be instrumental in helping people have a clearer insight into media bias and then fight against it to create a more fair and objective news environment.

Date: 2024
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DOI: 10.1057/s41599-024-03143-w

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