Zohreh Zahedi, PhD

Zohreh Zahedi is a visiting researcher at the Centre for Science and Technology Studies (CWTS) of Leiden University. She holds PhD degree in Quantitative Studies of Science specializing in Social Media Metrics & Research Evaluation from CWTS, Leiden University.

Her PhD thesis focused on the possibilities and applications of social media metrics (altmetrics)  for informing research evaluation. In particular, she studied the presence and distribution of different social media metrics across fields of science, publication years, and document types and their relationship with traditional impact indicators. Moreover, she thoroughly investigated critical challenges regarding data quality issues of social media data and how the data collection and reporting approaches of different altmetric data aggregators influence both technically and conceptually the social media metrics provided.

Zohreh was also involved in some altmetrics and bibliometrics projects at CWTS among others ‘Knowledge in the Making in European Society’, ‘Social media profiles of African research’, and ‘Eurostars Social Impact Analytics Graph’. 

Zohreh is currently the member of Quantitative Science  Studies (QSS) research group and particularly contributes to the research line in altmetrics. Her research focuses on studying the interactions between social media and science (Social Media Study of Science). Studying the various interactions of social media users with various content shared on social media platforms provides great opportunity for obtaining valuable insights into the communications between different social media audiences and actors.

https://sites.google.com/view/zohreh-zahedi/home
https://scholar.google.com/citations?user=X8O5sZ4AAAAJ
https://www.linkedin.com/in/zohrehzahedi/
https://twitter.com/ZohrehZahedi

Publications

Journal publications (9)

• Zahedi, Z., & Costas, R. (2020). Do online readerships offer useful assessment tools?: Discussion around the practical applications of Mendeley readership for scholarly assessment. Scholarly Assessment Reports, 2(1). (paper)
• Zahedi, Z., & Costas, R. (2018). General discussion of data quality challenges in social media metrics: Extensive comparison of four major altmetric data aggregators. PLoS ONE, 13(5), e0197326. (paper)
• Zahedi, Z., & Haustein, S. (2018). On the relationships between bibliographic characteristics of scientific documents and citation and Mendeley readership counts: A large-scale analysis of Web of Science publications. Journal of Informetrics, 12(1), 191-202. (paper)
• Zahedi, Z., & Van Eck, N.J. (2018). Exploring topics of interest of Mendeley users. Journal of Altmetrics, 1(1), 5. (paper)
• Zahedi, Z., Costas, R., & Wouters, P. (2017). Mendeley readership as a filtering tool to identify highly cited publications. Journal of the Association for Information Science and Technology, 68(10), 2511-2521. (paper)
• Costas, R., Zahedi, Z., & Wouters, P. (2015). Do altmetrics correlate with citations? Extensive comparison of altmetric indicators with citations from a multidisciplinary perspective. Journal of the Association for Information Science and Technology, 66(10), 2003-2019. (paper)
• Costas, R., Zahedi, Z., & Wouters, P. (2015). The thematic orientation of publications mentioned on social media: Large-scale disciplinary comparison of social media metrics with citations. Aslib Journal of Information Management, 67(3), 260-288. (paper)
• Robinson-García, N., Torres-Salinas, D., Zahedi, Z., & Costas, R. (2014). Nuevos datos, nuevas posibilidades: Revelando el interior de Altmetric.com (New data, new possibilities: Exploring the insides of Altmetric.com). El Profesional de la Information, 23(4), 359-366. doi:10.3145/epi.2014.jul.03 (paper)
• Zahedi, Z., Costas, R., & Wouters, P. (2014). How well developed are altmetrics? A cross-disciplinary analysis of the presence of 'alternative metrics' in scientific publications. Scientometrics, 101(2), 1491-1513. doi:10.1007/s11192-014-1264-0 (paper)

Conference publications (26)

• Costas, R., Zahedi, Z., & Alperin, J.P. (2019). Global country-level patterns of Mendeley readership performance compared to citation performance: does Mendeley provide a different picture on the impact of scientific publications across countries? In G. Catalano, C. Daraio, M. Gregori, H.F. Moed, & G. Ruocco (Eds.), Proceedings of the International Conference on Scientometrics and Informetrics (pp. 1195-1200). (paper)
• Zahedi, Z., & Costas, R. (2018). Challenges in the quality of social media data across altmetric data aggregators. In R. Costas, T. Franssen, & A. Yegros-Yegros (Eds.), Proceedings of the 23rd International Conference on Science and Technology Indicators (pp. 1553-1557). (paper)
• Costas, R., Van Honk, J., Calero-Medina, C.M., & Zahedi, Z. (2017). Discussing practical applications for altmetrics: development of ‘social media profiles’ for African, European and North American publications. (paper)
• Zahedi, Z. (2017). What explains the imbalance use of social media across different countries? A cross country analysis of presence of Twitter users tweeting scholarly publications. Toronto, Canada. (paper)
• Zahedi, Z., & Costas, R. (2017). How visible are the research of different countries: an analysis of global vs. local reach of WoS publications on Twitter. (paper)
• Costas, R., Haustein, S., Zahedi, Z., & Larivière, V. (2016). Exploring paths for the normalization of altmetrics: applying the characteristic scores and scales. (paper)
• Costas, R., Van Honk, J., Zahedi, Z., & Calero-Medina, C.M. (2016). Discussing practical applications for altmetrics: development of ‘social media profiles’ for African, European and North American publications. (paper)
• Fraumann, G., Costas, R., Mugnaini, R., Packer, A.L., & Zahedi, Z. (2016). Twitter presence and altmetrics counts of SciELO Brazil Journals. (paper)
• Zahedi, Z., Costas, R., Larivière, V., & Haustein, S. (2016). What makes papers visible on social media?: An analysis of various document characteristics. In Rafols, I., J. Molas-Gallart, E. Castro-Martínez, & R. Woolley (Eds.), Proceedings of the 21st International Conference on Science and Technology Indicators (pp. 1196-1199). (paper)
• Zahedi, Z., Haustein, S., Larivière, V., & Costas, R. (2016). On the relationships between bibliometric and altmetric indicators: The effect of discipline and density level. (paper)
• Fraumann, G., Zahedi, Z., & Costas, R. (2015). What do we know about Altmetric.com sources? : A study of the top 200 blogs and news sites mentioning scholarly output. (paper)
• Zahedi, Z., & Van Eck, N.J. (2015). Identifying topics of interest of Mendeley users using the text mining and overlay visualization functionality of VOSviewer. In Proceedings of the 20th International Conference on Science and Technology Indicators. (paper)
• Zahedi, Z., Costas, R., & Wouters, P. (2015). Do mendeley readership counts help to filter highly cited WoS publications better than average citation impact of journals (JCS)? In Proceedings of the 15th International Conference of the International Society for Scientometrics and Informetrics (pp. 16-25). (paper)
• Zahedi, Z., Fenner, M., & Costas, R. (2015). Challenges in altmetric data collection: are there differences among different altmetric providers/aggregators?. (paper)
• Zahedi, Z., Fenner, M., & Costas, R. (2015). Consistency among altmetrics data provider/aggregators: What are the challenges? Altmetrics workshop, 9 October 2015, Amsterdam Science Park, Amsterdam. (paper)
• Costas, R., Zahedi, Z., & Wouters, P. (2014). Disentangling the meaning of ‘altmetrics’: Content analysis of Web of Science scientific publications. In altmetrics14: expanding impacts and metrics - An ACM Web Science Conference 2014 Altmetrics Workshop. (paper)
• Meijer, I., Zahedi, Z., Belder, R., & Van der Weijden, I.C.M. (2014). Researchers with a personal grant: Perceptions on societal relevance and outputs. In Research Funding & Dynamics of Science Workshop. (paper)
• Van der Weijden, I.C.M., Zahedi, Z., Must, Ü., & Meijer, I. (2014). Gender differences in societal orientation and output of individual scientists. In Proceedings of the 19th International Conference on Science and Technology Indicators (pp. 680-686). (paper)
• Zahedi, Z. (2014). Analyzing readerships of international Iranian publications in Mendeley: An altmetrics study. Isfahan, Iran: Isfahan university. (paper)
• Zahedi, Z., & Van Eck, N.J. (2014). Visualizing readership activity of Mendeley users using VOSviewer. In altmetrics14: expanding impacts and metrics - An ACM Web Science Conference 2014 Altmetrics Workshop. doi:10.6084/m9.figshare.1041819 (paper)
• Zahedi, Z., Bowman, T.D., & Haustein, S. (2014). Exploring data quality and retrieval strategies for Mendeley reader counts. In Metrics14 - ASIS&T Workshop on Informetric and Scientometric Research. (paper)
• Zahedi, Z., Costas, R., & Wouters, P. (2014). Assessing the impact of the publications read by the different Mendeley users: Is there any different pattern among users? In Proceedings of the IATUL Conferences. (paper)
• Zahedi, Z., Costas, R., & Wouters, P. (2014). Broad altmetric analysis of Mendeley readerships through the academic status of the readers of scientific publication. In Proceedings of the 19th International Conference on Science and Technology Indicators (pp. 720-727).
• Zahedi, Z., Fenner, M., & Costas, R. (2014). How consistent are altmetrics providers? Study of 1000 PLOS ONE publications using the PLOS ALM, Mendeley and Altmetric.com APIs. In altmetrics14: expanding impacts and metrics - An ACM Web Science Conference 2014 Altmetrics Workshop. doi:10.6084/m9.figshare.1041821 (paper)
• Zahedi, Z., Costas, R., & Wouters, P. (2013). How well developed are Altmetrics? Cross-disciplinary analysis of the presence of 'alternative metrics' in scientific publications. In J. Gorraiz, E. Schiebel, C. Gumpenberger, M. Hörlesberger, & H.F. Moed (Eds.), Proceedings of the 14th International Conference of the International Society for Scientometrics and Informetrics. (paper)
• Zahedi, Z., Costas, R., & Wouters, P. (2013). What is the impact of the publications read by the different Mendeley users? Could they help to identify alternative types of impact? PLoS ALM Workshop, San Francisco. San Francisco, US.: PLoS ALM Workshop. (paper)

Book chapters (1)

• Wouters, P., Zahedi, Z., & Costas, R. (2019). Social media metrics for new research evaluation. In W. Glänzel, H.F. Moed, U. Schmoch, & M. Thelwall (Eds.), Springer Handbook of Science and Technology Indicators. Springer. (paper)