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Guy Abel

@guyabel.bsky.social
659 followers 268 following 21 posts

Professor at HKU. Statistical demographer working on estimating #migration and demographic forecasting, mainly using #rstats.

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Guy Abel @guyabel.bsky.social · 12/06/2026
In the previous work, based on five-year flow estimates the level is higher (longer interval) and no clear trend (only 6 data points though) guyabel.com/publication/...
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Guy Abel @guyabel.bsky.social · 12/06/2026
Sorry about that Clark - there's errors in the references numbers to SM figures. Should be Extended Data Fig. 2 (top left for Globe) www.nature.com/articles/s41... - rise from 2 per 1000 to 4 per 1000 annually.
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Guy Abel @guyabel.bsky.social · 11/06/2026
📦 Download the complete estimates of annual global migration flow and stock datasets: 🔗 zenodo.org/records/1577... 🔗 huggingface.co/datasets/ThG... 🛠️ Access the full deep learning architecture and plot reproduction code on GitHub: 🔗 github.com/ThGaskin/Mig... @iiasa.ac.at
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Guy Abel @guyabel.bsky.social · 11/06/2026
📊 The data explorer features a variety of interactive data visualisation methods. Switch between the global maps, chord diagrams and Sankey charts to track directional pathways across different country corridors. Includes many options, including toggling map types and filtering chord sizes.
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Guy Abel @guyabel.bsky.social · 11/06/2026
🌏Explore the annual trends and country-to-country corridors yourself. Our interactive global data explorer provides full access to both migration stocks and annual flows from 1990–2023: www.socsc.hku.hk/rhps/global-...
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Guy Abel @guyabel.bsky.social · 11/06/2026
🚨Out today in @nature.com our new paper uses deep learning to map four decades of global human migration. By building the first comprehensive, four-decade dataset of annual flows (1990-2023), we reveal that global migration has nearly tripled since 2000. 🔗 www.nature.com/articles/s41...
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Reposted by Guy Abel
Nature @nature.com · 10/06/2026
Global migration has increased from 13 million people per year in 2000 to around 35 million in 2023. The data, published in Nature today, come from the most detailed maps of global migration produced in the 33 years. go.nature.com/4uCpkxy
go.nature.com
Human migration has surged since 2000 — these maps reveal where people are going
Modelling with artificial-intelligence tools has filled gaps in migration data, revealing detailed global population movements from 1990 to 2023.
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Reposted by Guy Abel
Max Planck Institute for Demographic Research (MPIDR) @mpidr.bsky.social · 22/10/2025
Job Offer: PhD Student Position The University of Hong Kong (HKU) and the @mpidr.bsky.social + @imprs-phds.bsky.social invite applications for a 4-year PhD position. The studentship is not limited to specific topics. Apply until November 17! www.demogr.mpg.de/en/career_61...
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Guy Abel @guyabel.bsky.social · 06/05/2025
Thank you, Philippe. Much appreciated.
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Guy Abel @guyabel.bsky.social · 02/05/2025
Work led by Guanghua Chi, with Eugenia Giraudy, Mike Bailey (Meta) and @drew-johnston.bsky.social
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Guy Abel @guyabel.bsky.social · 02/05/2025
The @nytopinion.nytimes.com provides some amazing #dataviz of the estimates (behind their paywall): www.nytimes.com/interactive/...
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Guy Abel @guyabel.bsky.social · 02/05/2025
We estimate a 64% decrease in migration during the #COVID19 pandemic, followed by a rebound in 2022 to a rate 24% higher than pre-pandemic levels. #poptwitter @iiasa.ac.at
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Guy Abel @guyabel.bsky.social · 02/05/2025
We estimated 39.1 million international migrants in 2022, representing 0.63% of the population in the sampled countries. Our figures correlated strongly with migration data from official statistics. The estimates are #OpenAccess on HDX: data.humdata.org/dataset/inte...
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Guy Abel @guyabel.bsky.social · 02/05/2025
📢New paper out on measuring global #migration flows using online data in @pnas.org We use privacy-protected records from over 3 billion Facebook users to estimate migration flows between 181 countries, accounting for biases in social media usage 🔗https://www.pnas.org/doi/10.1073/pnas.2409418122
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Guy Abel @guyabel.bsky.social · 18/04/2025
Another non-paywalled link: www.nytimes.com/interactive/...
nytimes.com
Opinion | To Understand Global Migration, You Have to See It First (Gift Article)
These estimates, drawn from the location data of three billion Facebook users, provide a view of human migration in extraordinary detail.
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Guy Abel @guyabel.bsky.social · 17/04/2025
Free link to the article: nyti.ms/4lEMIXS Free link the the data explorer: nyti.ms/3Gd9Uw9 Neither require NYT subscription
nyti.ms
Opinion | To Understand Global Migration, You Have to See It First (Gift Article)
These estimates, drawn from the location data of three billion Facebook users, provide a view of human migration in extraordinary detail.
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Guy Abel @guyabel.bsky.social · 17/04/2025
Full #OpenAccess to the estimates will come soon, when the journal paper based on the work is published.
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Guy Abel @guyabel.bsky.social · 17/04/2025
An arxiv paper on our method, led by Meta Data for Good researchers, is out now: arxiv.org/abs/2504.11691
arxiv.org
Measuring Global Migration Flows using Online Data
Existing estimates of human migration are limited in their scope, reliability, and timeliness, prompting the United Nations and the Global Compact on Migration to call for improved data collection. Us...
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Guy Abel @guyabel.bsky.social · 17/04/2025
The @nytopinion.nytimes.com today features a #dataviz of our new global migration flow estimates. nytimes.com/interactive/... Using privacy protected records from three billion Facebook users, we estimated country-to-country #migration flows at monthly granularity for 181 countries.
nytimes.com
Opinion | To Understand Global Migration, You Have to See It First
These estimates, drawn from the location data of three billion Facebook users, provide a view of human migration in extraordinary detail.
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Guy Abel @guyabel.bsky.social · 27/03/2025
Updated global #migration flow estimates to match new @UNDESA stock data 📄Bilateral: doi.org/10.6084/m9.f... 📄Bilateral by sex: doi.org/10.6084/m9.f... 🖥️Update details: guyabel.com/publication/... 📔Original @ScientificData papers: nature.com/articles/s41... & www.nature.com/articles/s41...
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Guy Abel @guyabel.bsky.social · 03/03/2025
🚨JOB ALERT🚨 We are recruiting for multiple Research Assistant Professor (RAP) / Post-doctoral Fellow (PDF) positions in the HKU Research Hub of Population Studies. jobs.hku.hk/en/job/53127... #demography #population #poptwitter #hongkong
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Reposted by Guy Abel
Chris Levesque @cmlevesque.bsky.social · 03/12/2024
In a new open-access article in Population and Development Review, our team provides a much-needed empirical starting point for future research on the globalization of international migration. Read more here: onlinelibrary.wiley.com/doi/10.1111/... #sociology #demography #migration
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Guy Abel @guyabel.bsky.social · 30/10/2024
Updated country-to-country #migration flow estimates for WPP2024 📄Bilateral: doi.org/10.6084/m9.f... 📄Bilateral by sex: doi.org/10.6084/m9.f... 🖥️Update details: guyabel.com/publication/... 📔Original Nature Scientific Data papers: nature.com/articles/s41... & nature.com/articles/s41...
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Guy Abel @guyabel.bsky.social · 17/06/2024
Updated post on visualizing the evolution of squad compositions at UEFA European Championships #EURO2024 #rstats guyabel.com/post/uefa-ec...
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