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Xinkai Du

@xinkaidu.bsky.social
1.9K followers 514 following 50 posts

PhD in PsychMethods & ClinicalPsych with @sverreuj @SachaEpskamp | Prev @UvAmsterdam @UWaterloo | (Network) Psychometrics; (Intensive) Longitudinal Data; Natural Language Processing; Applied Statistics

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Xinkai Du @xinkaidu.bsky.social · 20/03/2026
Thrilled to share that our work (with Sverre Urnes Johnson and @sachaepskamp.bsky.social) on invariance partial pruning (IVPP), a novel approach to comparing networks in time-series and panel data is now online at Psychological Methods 10.1037/met0000824 (preprint link: 10.31234/osf.io/vb8dz_v2).
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Xinkai Du @xinkaidu.bsky.social · 19/01/2026
My latest work with @sachaepskamp.bsky.social on creating dynamic fit index cutoffs for Gaussian graphical models is now out as a preprint: osf.io/preprints/ps..., accompanied by an R package, netDFI: github.com/xinkaidupsy/....
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Xinkai Du @xinkaidu.bsky.social · 06/10/2025
Day 1 at Stanford and officially started my 4-month US visit in this special time. Amazed by the beautiful campus.
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Xinkai Du @xinkaidu.bsky.social · 23/08/2025
Adopt Registered Reports at Psychological Methods - Sign the Petition! chng.it/8h2KXXR4jk
chng.it
Sign the Petition
Adopt Registered Reports at Psychological Methods
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Xinkai Du @xinkaidu.bsky.social · 12/07/2025
Currently visiting Dr. Johnny Zhang in Notre Dame and excited to learn about his approaches combining CS and psychometrics. Had a wonderful encounter with a deer on the way to campus. :)
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Marcelo Mattar @marcelomattar.bsky.social · 02/07/2025
Thrilled to see our TinyRNN paper in @nature! We show how tiny RNNs predict choices of individual subjects accurately while staying fully interpretable. This approach can transform how we model cognitive processes in both healthy and disordered decisions. doi.org/10.1038/s415...
doi.org
Discovering cognitive strategies with tiny recurrent neural networks - Nature
Modelling biological decision-making with tiny recurrent neural networks enables more accurate predictions of animal choices than classical cognitive models and offers insights into the underlying cog...
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Sacha Epskamp @sachaepskamp.bsky.social · 26/06/2025
Happy to share that our article, led by @xinkaidu.bsky.social, on confirmatory network modeling has been published in Psychological Methods! psycnet.apa.org/record/2026-...
psycnet.apa.org
APA PsycNet
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Xinkai Du @xinkaidu.bsky.social · 26/06/2025
Thrilled to share that this paper has now been published on Psychological Methods. See 🧵 below for an intro & shinyapp to view the results, as well as non-paywalled version. dx.doi.org/10.1037/met0...
dx.doi.org
APA PsycNet
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Julia M. Rohrer @dingdingpeng.the100.ci · 02/06/2025
Some papers are really good because they make just one point, but they make it really clearly — such as “Statistical Control Requires Causal Justification” journals.sagepub.com/doi/10.1177/...
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Xinkai Du @xinkaidu.bsky.social · 26/05/2025
The three-month research visit with @sachaepskamp.bsky.social at NUS was a great memory, and even more excited with research output. Excited to share a novel approach to compare networks models in time-series and panel data, which we term invariance partial pruning (IVPP). osf.io/vb8dz_v1
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Hu Chuan-Peng is on paternity leave @hcp4715.bsky.social · 14/02/2025
🥳thrilled that our dockerHDDM tutorial paper, after many years's work was published in my dream journal AMPPS of @psychscience.bsky.social 🤩 👇 doi.org/10.1177/2515.... The image's been downloaded 10K+⏬ docker Hub Such a pleasure to work w/ Wanke, Ru Yuan, Haiyang & member of HDDM/HSSM team!
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Eiko Fried @eikofried.bsky.social · 13/02/2025
1/3 Tutorial on exploring ecological momentary assessment data is online at AMPPS, with: - Accessible ways to visualize data for better understanding - Models to get some first insights - Further reading boxes for more advanced topics - Reproducible pipeline you can run over your own data
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René Freichel @renefreichel.bsky.social · 07/02/2025
Check out this important methodological validation study of SEM fit indices for (confirmatory) network modeling. Led by @xinkaidu.bsky.social!
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Xinkai Du @xinkaidu.bsky.social · 07/02/2025
Preprint on using SEM fit indices & conventional cutoffs in confirmatory network analysis updated! Now with a Shiny app for results display. PsyArXiv: osf.io/preprints/ps... RG: www.researchgate.net/publication/... Shiny app: github.com/xinkaidupsy/... See 🧵 for the summary of results
researchgate.net
(PDF) Moving from exploratory to confirmatory network analysis: An evaluation of SEM fit indices and cutoff values in network psychometrics
PDF | Network models are well-suited for phenomena detection, and most empirical network studies have been exploratory so far. Yet, due to the close... | Find, read and cite all the research you need ...
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Charles Driver @charlesdriver.bsky.social · 15/01/2025
Looking for a longitudinal (ideally intensive) dataset where missing data is expected to be problematic, i.e. MNAR, anyone have pointers to good examples?
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ArXiv Paperboy (Stat.ME+Econ.EM) @paperposterbot.bsky.social · 03/01/2025
link 📈🤖 Penalized weighted GEEs for high-dimensional longitudinal data with informative cluter size (Ma, Wang, Jiang) High-dimensional longitudinal data have become increasingly prevalent in recent studies, and penalized generalized estimating equations (GEEs) are often used to model such data. H
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ArXiv Paperboy (Stat.ME+Econ.EM) @paperposterbot.bsky.social · 03/01/2025
link 📈🤖 Penalized Quasi-likelihood for High-dimensional Longitudinal Data via Within-cluster Resampling (Ma, Wang, Jiang) The generalized estimating equation (GEE) method is a popular tool for longitudinal data analysis. However, GEE produces biased estimates when the outcome of interest is assoc
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Paolo Crosetto @paolocrosetto.bsky.social · 20/12/2024
I was today years old when I found this gem of a web app to explore 2500+ color palettes for R: r-graph-gallery.com/color-palett...
r-graph-gallery.com
R Color Palette Finder
The ultimate tool for finding the perfect color palette for data visualization with R and paletteer. Explore over 2000 palettes, see them in action on various charts, simulate color blindness, and exp...
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Nick Clark 💹 @njclark.bsky.social · 13/12/2024
A real pleasure to run two workshops on time series and forecasting to wrap up #ESAus2024. Great to see so many wonderful scientists doing temporal ecology in Australia. Hopefully my {mvgam} software can help with some of this: youtube.com/playlist?lis...
youtube.com
Time series in R and Stan using the mvgam package - YouTube
This series of webinars introduces the mvgam R package, which can fit State-Space Dynamic Generalized Additive Models using Bayesian inference to time series...
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PsyArXivBot @psyarxivbot.bsky.social · 10/12/2024
Conspiracy theories and violent extremism: osf.io/emgjf
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Nico Krämer @pnkraemer.bsky.social · 09/12/2024
🛩️ On my way to #NeurIPS2024 and excited to chat about (ML applications of) linear algebra, differentiable programming, and probabilistic numerics! Feel free to DM if you’d like to meet up, hang out, and/or discuss any of these topics 😊 (Where to find me & paper info? -> Thread)
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PsyArXivBot @psyarxivbot.bsky.social · 25/11/2024
Evaluating General Network Scoring Methods as Alternatives to Traditional Factor Scoring Methods: osf.io/s3re6
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Xinkai Du @xinkaidu.bsky.social · 20/11/2024
🤔
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Kristoffer Magnusson @rpsychologist.com · 18/11/2024
Working on some network stuff. It's oddly satisfying going from this network spaghetti to something a bit more organized
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Ian Hussey @ianhussey.mmmdata.io · 15/11/2024
FYI Lisa has a multi week course on this recorded. I attended the first week or two and it was great, I just didn’t have the time to continue with it. youtu.be/XiM4jFJ6ocY?...
youtu.be
Intro to R Packages: Setting Up a Package Project (Week 1)
YouTube video by Lisa DeBruine
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Hudson Golino @hudsongolino.bsky.social · 15/11/2024
go.bsky.app/MMeFFH6
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Giovanni Briganti, M.D., Ph.D. @briganti.bsky.social · 15/11/2024
Our long didactic paper on #network analysis, written with many of the amazing scientists that work in the field is finally out in IJMPR and open access ! It was a long and collaborative effort two years in the making, but, it was worth it! Please repost onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Network analysis: An overview for mental health research
Network approaches to psychopathology have become increasingly common in mental health research, with many theoretical and methodological developments quickly gaining traction. This article illustrat...
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Hudson Golino @hudsongolino.bsky.social · 14/11/2024
The Exploratory Graph Model is now LIVE! TL;DR: The paper introduces the Exploratory Graph Model (EGM), a new mathematical framework for analyzing psychological measurements using networks instead of traditional latent variable models 1/n osf.io/preprints/ps...
osf.io
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Dan McNeish @dmcneish.bsky.social · 13/11/2024
This article gives a phenomenal overview of the history and evolution of best practices in measurement invariance and differential item functioning -- I can't remember the last time I learned so much reading a single paper, highly recommended! www.tandfonline.com/doi/full/10....
tandfonline.com
A Review of Some of the History of Factorial Invariance and Differential Item Functioning
The concept of factorial invariance has evolved since it originated in the 1930s as a criterion for the usefulness of the multiple factor model; it has become a form of analysis supporting the vali...
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Mubashar “Mubs” Iqbal @mubashariqbal.com · 11/11/2024
Starter packs are genius, but I was surprised there wasn't a list of them for people to find. So I built it: blueskydirectory.com/starter-pack... The website monitors the packs being shared and adds the ones it finds to the database. Missed your stater pack? Message me and I'll get it added.
blueskydirectory.com
All - Bluesky Directory
A curated collection of all things relating to the Blue Sky social media platform.
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Darren Dahly @statsepi.bsky.social · 12/11/2024
In clinical research, you will often receive feedback on study design, stats, and/or data analysis from an editor or reviewer that is simply wrong. Here is a list of common "statistical myths" and references you can use to push back. discourse.datamethods.org/t/reference-...
discourse.datamethods.org
Reference Collection to push back against "Common Statistical Myths"
Note: This topic is a wiki, meaning that this main body of the topic can be edited by others. Use the Reply button only to post questions or comments about material contained in the body, or to sugge...
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Xinkai Du @xinkaidu.bsky.social · 11/11/2024
I created a starter pack of researchers in network psychometrics. Pretty sure there is more so feel free to message below if want to be added! go.bsky.app/8ccFL3W
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Eiko Fried @eikofried.bsky.social · 01/11/2024
1/2 Our new preprint shows how to estimate internal consistency reliability in EMA data: ➡️n~1150, 3 months data, 4 scales ➡️6 nomothetic & idiographic methods ➡️2 timescales (4/day & 1/week) ➡️2 languages (ENG vs NL) ➡️separation of between & within person reliability. #psychscisky #stats
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Simon P. Couch @simonpcouch.com · 29/10/2024
Some news: I've just open-sourced the draft of a book I'm working on about how #rstats tidymodels users can make their code run faster without sacrificing predictive performance! www.simonpcouch.com/blog/2024-10...
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rogier kievit @rogierk.bsky.social · 19/09/2024
I made an attempt at a bsky psychometrics starter pack with people who work on or largely with psychometric tools! Please reskeet and (selfl!)nominate to help me fill my many and varied blind spots and make this a useful and balanced resource #rstats #psychometrics go.bsky.app/6oGLp7D
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PsyArXivBot @psyarxivbot.bsky.social · 26/10/2024
Convex Hull Applications to Natural Language Network Psychometrics: osf.io/khjzd
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Jan Failenschmid @janfailenschmid.bsky.social · 24/10/2024
New Preprint! I’m excited to share our preprint titled: "Modeling Non-Linear Psychological Processes: Reviewing and Evaluating Non-Parametric Approaches and Their Applicability to Intensive Longitudinal Data." Check out the full preprint here: osf.io/preprints/ps... Any feedback is welcome! 1/3
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PsyArXivBot @psyarxivbot.bsky.social · 25/10/2024
Heterogeneous Variance Models with Gaussian Processes: osf.io/5ab3x
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PsyArXivBot @psyarxivbot.bsky.social · 24/10/2024
Modeling Non-Linear Psychological Processes: Reviewing and Evaluating Non-parametric Approaches and Their Applicability to Intensive Longitudinal Data: osf.io/26mde
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Julia M. Rohrer @dingdingpeng.the100.ci · 16/10/2024
First draft done 🐎
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Xinkai Du @xinkaidu.bsky.social · 13/10/2024
A few time ago I posted my first paper on psychometrics about the use of fit indices in confirmatory network testing. Glad to notice this paper has reached 500+ reads on ResearchGate and 350+ on PsyArXiv in less than 3 months. I think it’s a good chance to also post it here! osf.io/preprints/ps...
osf.io
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Eiko Fried @eikofried.bsky.social · 09/06/2024
Should you use Likert or VAS for EMA research? In a new paper led by @jmbh.bsky.social & Alberto Jover, we assigned n~160 in a 2 week study to either 📏1-7 Likert or 🎚️1-100 Visual Analogue Scale and compared results using Bayesian multilevel models. Brief thread with results.🧵 🧪 #psychpsysky
Photos of the two scale options, Likert vs VAS
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Olivia Kirtley @oliviajkirtley.bsky.social · 11/06/2024
Check out the latest preprint from the ESM Item Repository team, led by @gudruneisele.bsky.social and Anu Hiekkaranta. We conducted a delphi study of experience sampling method (ESM) experts to develop a quality assessment tool for ESM items. Summary & preprint link in Gudrun's 🧵 below.
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PsyArXivBot @psyarxivbot.bsky.social · 04/06/2024
A systematic review of the application of experience sampling methodology to measure anhedonia in psychiatry and mental health: osf.io/94hfz
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PsyArXivBot @psyarxivbot.bsky.social · 04/06/2024
A mathematical model of goal-oriented psychotherapy dynamics: osf.io/y3gnv
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Xinkai Du @xinkaidu.bsky.social · 03/04/2024
Excited to share that this July I will be hosting a symposium on network psychometrics at IMPS, Prague, where I will present with @liuthorsten.bsky.social , Ria Hoekstra, @bsiepe.bsky.social, Tatiana Kvetnaya, and Kai Nehler about our latest work!
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Joran 🟥 @joranjongerling.bsky.social · 14/03/2024
Very cool paper about detecting and controlling for Inattentive Responding in Ecological Momentary Assessment by Leonie Vogelsmeier, Irina Uglanova, Manuel Rein, and Esther Ulitzsch
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Gabor Csardi @gaborcsardi.org · 28/03/2024
R 4.4.0 is coming in less than one month! With rig you can try the alpha easily while keeping the current R version. Run rig add next to install, and then R-next to start R 4.4.0 alpha. On Windows, macOS or one of the many supported Linux distributions. github.com/r-lib/rig#re... #Rstats
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Laura Bringmann 🟥 @bringmannlaura.bsky.social · 19/03/2024
The Many Reliabilities of Psychological Dynamics! 🤩 Excited to share our latest preprint in collaboration with first author Sebastian Castro Alvarez. Here we explain different approaches to estimating the reliability of ESM data. osf.io/preprints/ps...
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