Andrey Lovakov
@lovakov.bsky.social
I am a Researcher at German Centre for Higher Education Research and Science Studies (DZHW), interested in the quantitative science studies
Pinned
Andrey Lovakov
@lovakov.bsky.social
· Oct 20
Is academic freedom associated with strong science? Evidence from a cross-national time-series analysis
Academic freedom is a widely discussed concept recognized as a key element of the academic system. While the intrinsic value of academic freedom is wi…
www.sciencedirect.com
An analysis based on a global panel dataset covering 119 countries from 1996 to 2021 shows that academic freedom at the country level is associated with the citation impact of future papers published by researchers from that country
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Scientific excellence is clustering in a few ‘superstar’ cities. New York, Boston, London and San Francisco now host 12% of the world's top scientists. The Global South remains largely absent, with the notable exception of Beijing's dramatic rise rgs-ibg.onlinelibrary.wiley.com/doi/10.1111/...
Transactions of the Institute of British Geographers | RGS Journal | Wiley Online Library
Scientific excellence is clustering ever more tightly in a few ‘superstar’ cities. Four—New York, Boston, London and the San Francisco Bay Area—now host 12% of the world's top scientists. In contrast...
rgs-ibg.onlinelibrary.wiley.com
December 27, 2025 at 7:49 PM
Scientific excellence is clustering in a few ‘superstar’ cities. New York, Boston, London and San Francisco now host 12% of the world's top scientists. The Global South remains largely absent, with the notable exception of Beijing's dramatic rise rgs-ibg.onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Andrey Lovakov
🎄 Hope you’ve got all your presents ready 💝
Google search interest shows a stable pattern:
🎅 “Christmas gift wife” peaks just before Christmas Eve
🎅 “Christmas gift husband” peaks much earlier
#MerryChristmas to all of you! 🎁
📈 Google Trends (Nov 18–Dec 24, 2020–2024)
#dataviz #ggplot2
Google search interest shows a stable pattern:
🎅 “Christmas gift wife” peaks just before Christmas Eve
🎅 “Christmas gift husband” peaks much earlier
#MerryChristmas to all of you! 🎁
📈 Google Trends (Nov 18–Dec 24, 2020–2024)
#dataviz #ggplot2
December 24, 2025 at 10:16 AM
🎄 Hope you’ve got all your presents ready 💝
Google search interest shows a stable pattern:
🎅 “Christmas gift wife” peaks just before Christmas Eve
🎅 “Christmas gift husband” peaks much earlier
#MerryChristmas to all of you! 🎁
📈 Google Trends (Nov 18–Dec 24, 2020–2024)
#dataviz #ggplot2
Google search interest shows a stable pattern:
🎅 “Christmas gift wife” peaks just before Christmas Eve
🎅 “Christmas gift husband” peaks much earlier
#MerryChristmas to all of you! 🎁
📈 Google Trends (Nov 18–Dec 24, 2020–2024)
#dataviz #ggplot2
Reposted by Andrey Lovakov
The Robust Bayesian Meta-Analysis package got updated with additional vignettes explaining how to perform Bayesian model-averaged publication bias-adjusted
- multilevel meta-analysis (cran.r-project.org/web/packages...)
- multilevel meta-regression (cran.r-project.org/web/packages...)
- multilevel meta-analysis (cran.r-project.org/web/packages...)
- multilevel meta-regression (cran.r-project.org/web/packages...)
Multilevel Robust Bayesian Meta-Analysis
cran.r-project.org
December 23, 2025 at 10:11 AM
The Robust Bayesian Meta-Analysis package got updated with additional vignettes explaining how to perform Bayesian model-averaged publication bias-adjusted
- multilevel meta-analysis (cran.r-project.org/web/packages...)
- multilevel meta-regression (cran.r-project.org/web/packages...)
- multilevel meta-analysis (cran.r-project.org/web/packages...)
- multilevel meta-regression (cran.r-project.org/web/packages...)
Reposted by Andrey Lovakov
Delighted to share this very important article with sobering results relevant for all migration researchers worldwide.
Lead by @carrasco-jig.bsky.social, together with @mariegodin.bsky.social, @cvar-sil.bsky.social and yours truly.
Open Access here:
doi.org/10.1057/s415...
Lead by @carrasco-jig.bsky.social, together with @mariegodin.bsky.social, @cvar-sil.bsky.social and yours truly.
Open Access here:
doi.org/10.1057/s415...
December 8, 2025 at 4:33 PM
Delighted to share this very important article with sobering results relevant for all migration researchers worldwide.
Lead by @carrasco-jig.bsky.social, together with @mariegodin.bsky.social, @cvar-sil.bsky.social and yours truly.
Open Access here:
doi.org/10.1057/s415...
Lead by @carrasco-jig.bsky.social, together with @mariegodin.bsky.social, @cvar-sil.bsky.social and yours truly.
Open Access here:
doi.org/10.1057/s415...
Only 40 % of the publications identified as top 3 in self-evaluations also rank among the top 3 by citation performance (based on a survey of 2,331 researchers).
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Assessing scientific output through self-evaluation: Evidence from four social science fields
We asked academics from the economics, political science, psychology, and sociology departments of the top 500 universities to state their top 3 publi…
www.sciencedirect.com
December 16, 2025 at 9:52 AM
Only 40 % of the publications identified as top 3 in self-evaluations also rank among the top 3 by citation performance (based on a survey of 2,331 researchers).
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
China's unilateral visa-free policies have significantly increased the number of co-authored publications between China and other countries. This effect is achieved by enhancing transportation accessibility and mobility, which facilitates cross-border research collaboration arxiv.org/pdf/2512.12189
December 16, 2025 at 9:26 AM
China's unilateral visa-free policies have significantly increased the number of co-authored publications between China and other countries. This effect is achieved by enhancing transportation accessibility and mobility, which facilitates cross-border research collaboration arxiv.org/pdf/2512.12189
Reposted by Andrey Lovakov
There seems to be a decrease in the coverage of affiliation metadata in #OpenAlex, particularly with regard to journal articles published by Elsevier since 2024. Only around 6% of Elsevier articles published in 2025 have affiliation metadata.
subugoe.github.io/scholcomm_an...
subugoe.github.io/scholcomm_an...
Decreasing affiliation metadata coverage in OpenAlex – Scholarly Communication Analytics
This blog post examines the decrease in affiliation metadata coverage in OpenAlex. An analysis of over 13 million articles published by major commercial publishers between 2018 and 2025 suggests that ...
subugoe.github.io
December 16, 2025 at 8:39 AM
There seems to be a decrease in the coverage of affiliation metadata in #OpenAlex, particularly with regard to journal articles published by Elsevier since 2024. Only around 6% of Elsevier articles published in 2025 have affiliation metadata.
subugoe.github.io/scholcomm_an...
subugoe.github.io/scholcomm_an...
This article revisits the early history of Soviet scientometrics, examining the role of Zinaida Mulchenko in writing Naukometriya... Mulchenko’s diminished positionality as the co-author of the book can be understood through the lens of the Matilda Effect direct.mit.edu/qss/article/...
The Matilda Effect in Soviet scientometrics? Nalimov, Mulchenko, and the origins of Naukometriya
Abstract. This article revisits the early history of Soviet scientometrics, examining the role of Zinaida Mulchenko in writing Naukometriya – the foundational book in this field. While Vasily V. Nalim...
direct.mit.edu
November 14, 2025 at 8:42 AM
This article revisits the early history of Soviet scientometrics, examining the role of Zinaida Mulchenko in writing Naukometriya... Mulchenko’s diminished positionality as the co-author of the book can be understood through the lens of the Matilda Effect direct.mit.edu/qss/article/...
Reposted by Andrey Lovakov
Very glad to see this collaborative work w/ Robin Haunschild and @lutzb.bsky.social published in Journal of Informetrics
"A study of gender and regional differences in scientific mobility and immobility among researchers identified as potentially talented"
Open Access here:
doi.org/10.1016/j.jo...
"A study of gender and regional differences in scientific mobility and immobility among researchers identified as potentially talented"
Open Access here:
doi.org/10.1016/j.jo...
November 6, 2025 at 4:46 PM
Very glad to see this collaborative work w/ Robin Haunschild and @lutzb.bsky.social published in Journal of Informetrics
"A study of gender and regional differences in scientific mobility and immobility among researchers identified as potentially talented"
Open Access here:
doi.org/10.1016/j.jo...
"A study of gender and regional differences in scientific mobility and immobility among researchers identified as potentially talented"
Open Access here:
doi.org/10.1016/j.jo...
Reposted by Andrey Lovakov
Studying social sciences & humanities makes students more left-leaning, controlling for initial views & major preference, driven by cultural views. Implies that if all students majored in business, college–noncollege ideological gap would shrink by 1/3
papers.ssrn.com/sol3/papers....
papers.ssrn.com/sol3/papers....
November 1, 2025 at 1:48 PM
Studying social sciences & humanities makes students more left-leaning, controlling for initial views & major preference, driven by cultural views. Implies that if all students majored in business, college–noncollege ideological gap would shrink by 1/3
papers.ssrn.com/sol3/papers....
papers.ssrn.com/sol3/papers....
Reposted by Andrey Lovakov
🧵 1/
🚨 New paper out in PLOS ONE! w/ @caropradier.bsky.social @benzpierre.bsky.social @natsush.bsky.social @ipoga.bsky.social @lariviev.bsky.social
We studied 43k authors and 264k citation links in U.S. economics to ask:
👉 Why do some papers cite others?
🔗 journals.plos.org/plosone/arti...
🚨 New paper out in PLOS ONE! w/ @caropradier.bsky.social @benzpierre.bsky.social @natsush.bsky.social @ipoga.bsky.social @lariviev.bsky.social
We studied 43k authors and 264k citation links in U.S. economics to ask:
👉 Why do some papers cite others?
🔗 journals.plos.org/plosone/arti...
October 27, 2025 at 6:06 PM
🧵 1/
🚨 New paper out in PLOS ONE! w/ @caropradier.bsky.social @benzpierre.bsky.social @natsush.bsky.social @ipoga.bsky.social @lariviev.bsky.social
We studied 43k authors and 264k citation links in U.S. economics to ask:
👉 Why do some papers cite others?
🔗 journals.plos.org/plosone/arti...
🚨 New paper out in PLOS ONE! w/ @caropradier.bsky.social @benzpierre.bsky.social @natsush.bsky.social @ipoga.bsky.social @lariviev.bsky.social
We studied 43k authors and 264k citation links in U.S. economics to ask:
👉 Why do some papers cite others?
🔗 journals.plos.org/plosone/arti...
"significant differences between legitimate and potentially predatory publishers are evident in terms of text length, metadata, visual complexity, and typography." link.springer.com/article/10.1...
Evaluating the visual design of science publications—a quantitative approach comparing legitimate and predatory journal papers - Scientometrics
The rise of predatory publishing poses a significant challenge to the integrity of scientific research, potentially undermining the credibility of scholarly communications. As parts of the academic co...
link.springer.com
October 24, 2025 at 12:31 PM
"significant differences between legitimate and potentially predatory publishers are evident in terms of text length, metadata, visual complexity, and typography." link.springer.com/article/10.1...
Reposted by Andrey Lovakov
I just reviewed the article 'Implicit reporting standards in bibliometric research: what can reviewers' comments tell us about reporting completeness?' by @dimitystephen.bsky.social and colleagues. I like the article a lot!
Article: arxiv.org/abs/2508.162...
Review: prereview.org/reviews/1739...
Article: arxiv.org/abs/2508.162...
Review: prereview.org/reviews/1739...
October 19, 2025 at 4:15 PM
I just reviewed the article 'Implicit reporting standards in bibliometric research: what can reviewers' comments tell us about reporting completeness?' by @dimitystephen.bsky.social and colleagues. I like the article a lot!
Article: arxiv.org/abs/2508.162...
Review: prereview.org/reviews/1739...
Article: arxiv.org/abs/2508.162...
Review: prereview.org/reviews/1739...
An analysis based on a global panel dataset covering 119 countries from 1996 to 2021 shows that academic freedom at the country level is associated with the citation impact of future papers published by researchers from that country
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Is academic freedom associated with strong science? Evidence from a cross-national time-series analysis
Academic freedom is a widely discussed concept recognized as a key element of the academic system. While the intrinsic value of academic freedom is wi…
www.sciencedirect.com
October 20, 2025 at 9:19 AM
An analysis based on a global panel dataset covering 119 countries from 1996 to 2021 shows that academic freedom at the country level is associated with the citation impact of future papers published by researchers from that country
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Andrey Lovakov
📢 New reviewed preprint, published by @elife.bsky.social at doi.org/10.7554/eLif.... We study two effects in science funding across 14 different funding programmes from 6 research funders across Europe and North America: (1) The Matthew effect; and (2) and the early-career setback effect.
🧵1/8
🧵1/8
October 15, 2025 at 8:56 AM
📢 New reviewed preprint, published by @elife.bsky.social at doi.org/10.7554/eLif.... We study two effects in science funding across 14 different funding programmes from 6 research funders across Europe and North America: (1) The Matthew effect; and (2) and the early-career setback effect.
🧵1/8
🧵1/8
Among the 62,701 active OA journals, the WoS indexes 6,157, SCP indexes 7,351, while OpenAlex indexes 34,217. A striking observation is the presence of 24,976 OA j. exclusively in OpenAlex, whereas only 182 are exclusively present in the WoS and 373 in SCP.
journals.plos.org/plosone/arti...
journals.plos.org/plosone/arti...
Geographical and disciplinary coverage of open access journals: OpenAlex, Scopus, and WoS
This study aims to compare the geographical and disciplinary coverage of OA journals in three databases: OpenAlex, Scopus and the Web of Science (WoS). We used the Directory of Open Access Scholarly R...
journals.plos.org
October 9, 2025 at 1:02 PM
Among the 62,701 active OA journals, the WoS indexes 6,157, SCP indexes 7,351, while OpenAlex indexes 34,217. A striking observation is the presence of 24,976 OA j. exclusively in OpenAlex, whereas only 182 are exclusively present in the WoS and 373 in SCP.
journals.plos.org/plosone/arti...
journals.plos.org/plosone/arti...
Reposted by Andrey Lovakov
Join our next Open Research Seminar with Dr. Annett Hoppe, PostDoc at Working Group Visual Analytics, Leibniz Information Centre for Science and Technology University Library (TIB):
"GROBI: Open-Source Tools for Accessible Bibliometric Analysis". October 14, 2–3 p.m.
Register: tinyurl.com/5pm8hvk8
"GROBI: Open-Source Tools for Accessible Bibliometric Analysis". October 14, 2–3 p.m.
Register: tinyurl.com/5pm8hvk8
October 6, 2025 at 8:08 PM
Join our next Open Research Seminar with Dr. Annett Hoppe, PostDoc at Working Group Visual Analytics, Leibniz Information Centre for Science and Technology University Library (TIB):
"GROBI: Open-Source Tools for Accessible Bibliometric Analysis". October 14, 2–3 p.m.
Register: tinyurl.com/5pm8hvk8
"GROBI: Open-Source Tools for Accessible Bibliometric Analysis". October 14, 2–3 p.m.
Register: tinyurl.com/5pm8hvk8
Reposted by Andrey Lovakov
I'm thrilled to share our latest study, published open access in Scientometrics. The paper is by Jochem Tolsma, myself, and Anne Maaike Mulders.
Here's the paper: link.springer.com/article/10.1...
Here's the replication website: coviddutchacademia.netlify.app
Here's the paper: link.springer.com/article/10.1...
Here's the replication website: coviddutchacademia.netlify.app
Knowledge lost, parity gained? COVID-19 and gender gaps in Dutch academia - Scientometrics
We investigated the extent to which the COVID-19 pandemic impacted long-standing gender inequalities in Dutch academia. Dutch academia is an ideal case to gain insight on exacerbated gender differentials due to COVID-19 on employees, because men and women face comparable institutional contexts and any COVID-19 impact becomes visible and measurable fast through potentially decreased yearly publications. We reconstructed the complete publishing careers up till 2022 of more than 8000 Dutch scientists who received a PhD from 1990 onwards and still had an active publication career before the pandemic started. We compared the publication dip between men and women during COVID-19. Our data allowed us to investigate whether the gendered impact of COVID-19 varied across research domains, different PhD cohorts and type of research output. We consistently find that COVID-19 did not have more severe consequences on research output for women than for men.
link.springer.com
October 3, 2025 at 10:22 AM
I'm thrilled to share our latest study, published open access in Scientometrics. The paper is by Jochem Tolsma, myself, and Anne Maaike Mulders.
Here's the paper: link.springer.com/article/10.1...
Here's the replication website: coviddutchacademia.netlify.app
Here's the paper: link.springer.com/article/10.1...
Here's the replication website: coviddutchacademia.netlify.app
Reposted by Andrey Lovakov
Great paper on the state of political science osf.io/preprints/os... by @guygrossman.bsky.social et. al. We have become more diverse, more quantitative, and more collaborative.
October 7, 2025 at 10:38 AM
Great paper on the state of political science osf.io/preprints/os... by @guygrossman.bsky.social et. al. We have become more diverse, more quantitative, and more collaborative.
"Removal rates were highest in hallways of the humanities, shared humanities/social sciences as well as in central facilities hallways"
We secretly placed small flags on a university campus and monitored what happened over the course of two semsters. The Israeli flag had the highest removal rate; politically motivated removals disproportionately targeted Israeli flags; removal rates were highest in hallways of the humanities, ...
September 30, 2025 at 11:37 AM
"Removal rates were highest in hallways of the humanities, shared humanities/social sciences as well as in central facilities hallways"
Reposted by Andrey Lovakov
Just published in Scientometrics: "Who Talks to the Prof? Gender Differences in Interaction with Senior Scholars at Four Academic Conferences." Open access: link.springer.com/article/10.1...
Who talks to the prof? Gender differences in interaction with senior scholars at four academic conferences - Scientometrics
The percentage of women in academia is still lower than what would be expected statistically, especially in the sciences and among faculty (tenured professors). Theories on network closure suggest tha...
link.springer.com
August 2, 2025 at 8:27 AM
Just published in Scientometrics: "Who Talks to the Prof? Gender Differences in Interaction with Senior Scholars at Four Academic Conferences." Open access: link.springer.com/article/10.1...
Gender differences in submission behavior exacerbate publication disparities in elite journals
elifesciences.org/reviewed-pre...
"Women were more likely to indicate that their “work was not ground-breaking or sufficiently novel” for the prestigious journals and they were advised against submitting"
elifesciences.org/reviewed-pre...
"Women were more likely to indicate that their “work was not ground-breaking or sufficiently novel” for the prestigious journals and they were advised against submitting"
Gender differences in submission behavior exacerbate publication disparities in elite journals
elifesciences.org
September 26, 2025 at 10:31 AM
Gender differences in submission behavior exacerbate publication disparities in elite journals
elifesciences.org/reviewed-pre...
"Women were more likely to indicate that their “work was not ground-breaking or sufficiently novel” for the prestigious journals and they were advised against submitting"
elifesciences.org/reviewed-pre...
"Women were more likely to indicate that their “work was not ground-breaking or sufficiently novel” for the prestigious journals and they were advised against submitting"
Reposted by Andrey Lovakov
First insights into address unification in OpenAlex, WoS & Scopus.
Findings: OpenAlex holds more unique addresses, but fewer item–address combinations. The share of addresses unified by our KB approach is lower than in proprietary DBs—yet promising & likely to improve. tinyurl.com/mv2xdtrc
Findings: OpenAlex holds more unique addresses, but fewer item–address combinations. The share of addresses unified by our KB approach is lower than in proprietary DBs—yet promising & likely to improve. tinyurl.com/mv2xdtrc
Address Information in OpenAlex, Web of Science, and Scopus: First Insights
tinyurl.com
September 26, 2025 at 8:55 AM
First insights into address unification in OpenAlex, WoS & Scopus.
Findings: OpenAlex holds more unique addresses, but fewer item–address combinations. The share of addresses unified by our KB approach is lower than in proprietary DBs—yet promising & likely to improve. tinyurl.com/mv2xdtrc
Findings: OpenAlex holds more unique addresses, but fewer item–address combinations. The share of addresses unified by our KB approach is lower than in proprietary DBs—yet promising & likely to improve. tinyurl.com/mv2xdtrc
Prevalence of predatory journals in OpenAlex
"Users of OpenAlex should be aware of the presence of many questionable or fraudulent journals in its data and consider methods to adapt their samples accordingly."
open-bibliometrics.de/posts/202506...
"Users of OpenAlex should be aware of the presence of many questionable or fraudulent journals in its data and consider methods to adapt their samples accordingly."
open-bibliometrics.de/posts/202506...
Prevalence of predatory journals in OpenAlex
open-bibliometrics.de
September 19, 2025 at 8:20 AM
Prevalence of predatory journals in OpenAlex
"Users of OpenAlex should be aware of the presence of many questionable or fraudulent journals in its data and consider methods to adapt their samples accordingly."
open-bibliometrics.de/posts/202506...
"Users of OpenAlex should be aware of the presence of many questionable or fraudulent journals in its data and consider methods to adapt their samples accordingly."
open-bibliometrics.de/posts/202506...
"Across databases, delve (+1,500%), underscore (+1,000%), and intricate (+700%) had the largest increases between 2022 and 2024. Growth in LLM-term usage was much higher in STEM fields than in social sciences and arts and humanities" arxiv.org/abs/2509.09596
How much are LLMs changing the language of academic papers after ChatGPT? A multi-database and full text analysis
This study investigates how Large Language Models (LLMs) are influencing the language of academic papers by tracking 12 LLM-associated terms across six major scholarly databases (Scopus, Web of Scienc...
arxiv.org
September 18, 2025 at 3:04 PM
"Across databases, delve (+1,500%), underscore (+1,000%), and intricate (+700%) had the largest increases between 2022 and 2024. Growth in LLM-term usage was much higher in STEM fields than in social sciences and arts and humanities" arxiv.org/abs/2509.09596