Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: News consumption and social media regulations policy   Users online tend to consume information adhering to their system of beliefs
and to ignore dissenting information. During the COVID-19 pandemic, users get
exposed to a massive amount of information about a new topic having a high
level of uncertainty. In this paper, we analyze two social media that enforced
opposite moderation methods, Twitter and Gab, to assess the interplay between
news consumption and content regulation concerning COVID-19. We compare the two
platforms on about three million pieces of content analyzing user interaction
with respect to news articles. We first describe users' consumption patterns on
the two platforms focusing on the political leaning of news outlets. Finally,
we characterize the echo chamber effect by modeling the dynamics of users'
interaction networks. Our results show that the presence of moderation pursued
by Twitter produces a significant reduction of questionable content, with a
consequent affiliation towards reliable sources in terms of engagement and
comments. Conversely, the lack of clear regulation on Gab results in the
tendency of the user to engage with both types of content, showing a slight
preference for the questionable ones which may account for a
dissing/endorsement behavior. Twitter users show segregation towards reliable
content with a uniform narrative. Gab, instead, offers a more heterogeneous
structure where users, independently of their leaning, follow people who are
slightly polarized towards questionable news.

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The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: physics
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio