How Inclusive Are Wikipedia's Hyperlinks in Articles Covering Polarizing Topics?
Cristina Menghini, Aris Anagnostopoulos, Eli Upfal

TL;DR
This paper investigates the bias in Wikipedia's hyperlink network related to polarizing topics, introducing a new measure of exposure to diverse information and revealing how network topology can limit user exposure to multiple perspectives.
Contribution
It presents a novel measure of exposure to diverse information based on network topology and applies it to analyze bias in Wikipedia's hyperlink structure on polarizing topics.
Findings
Network topology can significantly limit user exposure to diverse perspectives.
Wikipedia's hyperlink structure may reinforce knowledge bubbles on polarizing topics.
Evaluating network structure is crucial alongside article review for unbiased information dissemination.
Abstract
Wikipedia relies on an extensive review process to verify that the content of each individual page is unbiased and presents a neutral point of view. Less attention has been paid to possible biases in the hyperlink structure of Wikipedia, which has a significant influence on the user's exploration process when visiting more than one page. The evaluation of hyperlink bias is challenging because it depends on the global view rather than the text of individual pages. In this paper, we focus on the influence of the interconnect topology between articles describing complementary aspects of polarizing topics. We introduce a novel measure of exposure to diverse information to quantify users' exposure to different aspects of a topic throughout an entire surfing session, rather than just one click ahead. We apply this measure to six polarizing topics (e.g., gun control and gun right), and we…
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