Abstract
Social networking sites play a significant role in altmetrics. While 90% of all altmetric mentions come from Twitter, the known microscopic and macroscopic properties of Twitter altmetrics data are limited. In this study, we present a large-scale analysis of Twitter altmetrics data using social network analysis techniques on the ‘mention’ network of Twitter users. Exploiting the network-level properties of over 1.4 million tweets, corresponding to 77,757 scholarly articles, this study focuses on the following aspects of Twitter altmetrics data: (a) the influence of organizational accounts; (b) the formation of disciplinary communities; (c) the cross-disciplinary interaction among Twitter users; (d) the network motifs of influential Twitter users; and (e) testing the small-world property. The results show that Twitter-based social media communities have unique characteristics, which may affect social media usage counts either directly or indirectly. Therefore, instead of treating altmetrics data as a black box, the underlying social media networks, which may either inflate or deflate social media usage counts, need further scrutiny.






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Acknowledgements
The research has been supported by the National Research Programme for Universities Grant No. 6857/Punjab/NRPU/R&D/HEC/2016, funded by the Higher Education Commission of Pakistan, with Dr. Saeed Ul Hassan as Principal Investigator.
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Appendix
Appendix
This section presents the top 5 influential users from each community with their fields and types. Field attribute represents the subject-field or domain of the user, which helps to understand the community structure of the network. Note that subject-field and/or domain is manually extracted from the Twitter users’ profiles to properly label the influential users. There are eight major communities which cover more than 98% of users of the whole network (Table 3).
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Said, A., Bowman, T.D., Abbasi, R.A. et al. Mining network-level properties of Twitter altmetrics data. Scientometrics 120, 217–235 (2019). https://doi.org/10.1007/s11192-019-03112-0
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DOI: https://doi.org/10.1007/s11192-019-03112-0