Table 4 Relative year-difference statistics for social media data used in the reviewed studies.

From: Data selection and collection for constructing investor sentiment from social media

indicators

Relative year difference

Literature

mean

2.9

Bollen, Mao, and Zeng (2011), Gan et al. (2020)

std

2.0

 

min

0.0

Gu et al. (2006), Kim et al. (2016)

25%

1.0

Zhang and Skiena (2010), Karabulut (2013)

50%

2.0

Oliveira et al. (2017), Wei et al. (2016)

75%

4.0

Audrino et al. (2020), Mai et al. (2018)

max

8.0

Tsukioka et al. (2018), Giannini et al. (2019)

  1. The data in the table is calculated based on the publication dates disclosed in Appendix A and the sample period of the data used in the studies. For example, if the year of publication is 2015 and the data from 2008 to 2013 is used, the “relative year difference” is 2.0.
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