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Kati Lassila-Perini

@katilp.bsky.social
118 followers 168 following 14 posts

Particle physicist - data preservation, reusability, open data, education @cmsexperiment.bsky.social Helsinki Institute of Physics at CERN - Runner, XC-skier, hiker: most comfortable uphill.

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Kati Lassila-Perini @katilp.bsky.social · 19/08/2026
For code, you need an answer. For the rest, you would need _the_ answer.
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Kati Lassila-Perini @katilp.bsky.social · 29/04/2026
Exciting news from CDS (CERN Document Server) cds-blog.web.cern.ch/2026/04/new-... This is going to be a wonderful tool for #OpenScience and #AnalysisPreservation Now up to the communities to make the best use of it!
cds-blog.web.cern.ch
New on CDS: archive your code, community collections, simpler search – CDS | What's up on CDS
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Kati Lassila-Perini @katilp.bsky.social · 15/03/2026
Varmaankin näin. Tuntuu kuitekin siltä, että päätöksistä erityisesti kielimallien käytöstä eri yhteyksissä tekevät ihmiset, joilla ei ole pitkällisempää kokemusta muuta kuin että "oho se osas tehdä tommosenkin" nopealla prototyyppitasolla. Kokonaispunninta jää tekemättä. Ehkä siihen vielä tullaan.
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M.J. Crockett @mjcrockett.bsky.social · 26/02/2026
I'm a cognitive scientist with an interest in epistemic vigilance, and this essay that's been going around gave me pause. I don't think it's straightforward to apply the concept of epistemic vigilance to interactions with LLMs, as this essay does. 🧵/ sbgeoaiphd.github.io/rotating_the...
sbgeoaiphd.github.io
Amplifiers of Epistemic Posture
Essays and writing on AI
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Philip N Cohen @philipncohen.com · 20/02/2026
Openness throughout the research life cycle. Because your paper is not your research, it's how you tell people about your research.
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Richard McElreath 🐈‍⬛ @rmcelreath.bsky.social · 17/12/2025
The Max Planck Society has begun an exploratory round table for open science. We are drafting some recommendations to leadership. Still a long way to go! But here are my notes on the most recent draft, just so you all know how I am trying to steer things.
Richard McElreath: It must not be overlooked that junior researchers DO NOT TRUST US. We, the directors, are a big part of the problem. We made this system, we remake it every year, and we benefit from it. What can we do to credibly signal our commitment to reform a corrupt research culture? My conversations with junior scientists in the society has taught me that directors are too often either indifferent or hostile to science reform. We cannot hope to convince our prize winning colleagues. Their egos are immune. But we can replace retirements with researchers who care more about integrity than their own prestige. This is important both for earning the trust of the junior researchers who really do the research in the MPG and for attracting excellent future directors and starting to earn the trust of the public. So I suggest two strong signals to our junior researchers (and the public): (1) we will reform recruitment and promotion at all levels to eliminate proxies like citation counts and journal brands in favor of reliability and sustainability; (2) we will make open science skills a core part of scientific training, through the graduate schools at a minimum, as conditions for the central funding. The most ambitious thing we could do, as hinted at in item 5 above, is to meaningfully invest in metascientific research. As the largest basic research organization in the world, the MPG is uniquely suited to studying research and its products from a broad perspective that includes the humanities, the sciences, and policy. Governments are already involved in science reform. Someone should study it in an organized and sustained way.
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Science Explorer (SciX) @scixcommunity.bsky.social · 29/09/2025
#SciX is created by the #ADS team & operates out of the Smithsonian Astrophysical Observatory under a NASA Cooperative Agreement. Created and developed by scientists, for scientists, SciX builds on decades of open research infrastructure and collaboration: bit.ly/CfASciXNews
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Kati Lassila-Perini @katilp.bsky.social · 04/09/2025
For #openscience, the key is data ♻️, and everyone has a role! Select yours & check what you can do in: icfa-data-best-practices.app.cern.ch Also available on arXiv (arxiv.org/abs/2508.18892) but best accessed and read though the web app✨
icfa-data-best-practices.app.cern.ch
Best practices
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Kati Lassila-Perini @katilp.bsky.social · 04/09/2025
ICFA Data Lifecycle Panel’s best practice recommendations for data preservation and open science in high-energy physics are out🎉 Thanks to contributors, the hands-on experts in our field🙏 See the statement here: icfa.hep.net/wp-content/u...
icfa.hep.net
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Toby Hodges @tobyhodges.carpentries.org · 05/08/2025
My latest post on @carpentries.carpentries.org blog is a call to action for the community to engage in curriculum development for workshops about genAI. How can we help our target audience make more informed choices about when and how to use it? carpentries.org/blog/2025/08...
carpentries.org
AI Carpentry? Helping learners make better choices with genAI.
In two recent community discussion sessions, we explored what mental model of machine learning/deep learning we could teach to learners already familiar with the basics of programming, to help them sa...
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Kati Lassila-Perini @katilp.bsky.social · 02/05/2025
Remove some unnecessary stuff from the runner as the first step of the workflow. Dotnet, mysql, haskell, android...
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CodeRefinery @coderefinery.org · 06/03/2025
Collaborative Git: Teamwork Without the Chaos Working on code with others can get messy fast. 😵‍💫 Our #CollaborativeGit session teaches you how to work with teammates, contribute to projects, and never fear merge conflicts again. 🚀 📅 Join the March workshop: coderefinery.github.io/2025-03-25-w...
coderefinery.github.io
CodeRefinery workshop March 25-27 and April 1-3, 2025
Free workshop on git, testing, documentation, and more in a workshop - for researchers and scientists.
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Kati Lassila-Perini @katilp.bsky.social · 08/02/2025
Brilliant! This should be made mandatory not only for every college freshman but for every educator, student, scientist, journalist, politician, decision maker, citizen... Preferably once per week, just in case we forget.
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Chris Holdgraf @choldgraf.com · 05/02/2025
This is a big deal! 2i2c is supporting mybinder.org traffic with a BinderHub that is almost 5x cheaper than previous deployments. I think it is a great sign for mybinder.org's sustainability. 2i2c.org/blog/2025/bi... Here's a brief explainer (1/x)
mybinder.org
The Binder Project
Reproducible, sharable, open, interactive computing environments.
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Darby Saxbe @darbysaxbe.bsky.social · 04/02/2025
🚨BREAKING. From a program officer at the National Science Foundation, a list of keywords that can cause a grant to be pulled. I will be sharing screenshots of these keywords along with a decision tree. Please share widely. This is a crisis for academic freedom & science.
list of banned keywords
12652769115654
Reposted by Kati Lassila-Perini
Lauri Lavanti @lauri.lavanti.fi · 21/12/2024
"Pahin kokemukseni rasismista oli silloin, kun olin 11-vuotias. Olin pyöräilemässä keskustassa ja olin juuri aikomassa ylittää suojatietä, kun eteeni käveli nainen. Tämä nainen alkoi huutaa minulle ja haukkua minua n-sanalla. Sen jälkeen hän sylki kasvoilleni." - kahdeksasluokkalainen suomalainen
hs.fi
Lukijan mielipide | Meitä tummaihoisia kiusataan jatkuvasti
Pysähtyykö kukaan ajattelemaan sitä, miten syrjiminen oikeasti vaikuttaa meihin tummaihoisiin?
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Yasset Perez-Riverol @ypriverol.bsky.social · 09/12/2024
Recently, We saw a discussion on the role of open-source in proteomics. Here, experienced developers & researchers maintaining OS tools for years shared this comment to guide newcomers in the field about OS and its role in the field. 💻 #Proteomics #OpenSource chemrxiv.org/engage/chemr...
chemrxiv.org
Open-source and FAIR Research Software for Proteomics
Scientific discovery relies on innovative software as much as experimental methods, especially in proteomics, where computational tools are essential for mass spectrometer setup, data analysis, and in...
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Petteri Järvinen @petterij.bsky.social · 10/12/2024
Haluatko ryhtyä kotona hiukkasfyysikoksi? CERNin tutkimusdataa v 2010-2016 ladattavissa netistä omia tutkimuksia varten. Siitä vain etsimään uusia alkeishiukkasia. opendata.cern.ch #cern
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Kati Lassila-Perini @katilp.bsky.social · 04/12/2024
@teemuroos.bsky.social @hannu-toivonen.bsky.social Saanko kysyä? Onko termistä workflow käytössä suomenkielistä vastinetta? Esim. yhteydessä computational workflow tai workflow language.
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Kati Lassila-Perini @katilp.bsky.social · 02/12/2024
🎓: In addition, in Finland, we help teachers bring authentic open data to schools - not only particle physics but all domains according to teachers' needs (not ours!). #digitalskills #dataliteracy Read about it e.g. in iopscience.iop.org/article/10.1... Credits go to brilliant Peitsa Veteli!
iopscience.iop.org
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Kati Lassila-Perini @katilp.bsky.social · 02/12/2024
♻️: The #reusability of open data at the research level remains my main interest: #knowledgepreservation through #analysispreservation is needed! Currently leading the "Data Lifecycle panel" set up by ICFA (International Committee for Future Accelerators). More about it later!
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Kati Lassila-Perini @katilp.bsky.social · 02/12/2024
🤝: I have now passed the CMS OD leadership to @tpmccauley.bsky.social & Julie Hogan: they are doing great🤩 Happy that I forced myself to 📝 all what is involved in the data release preparations - a humbling experience as it exposes all my flaws🫣. #FAIR is for open data but also for how to get there🤷‍♀️
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Kati Lassila-Perini @katilp.bsky.social · 02/12/2024
And also 😊 to see how the #opendata experience gained from what we did convinced those who expected trouble home.cern/news/series/... and we could set up new standards in our field🏆
home.cern
CERN70: Continuing CERN’s legacy of open science
Rolf Heuer was CERN Director-General during an era when multiple open science initiatives were launched by the Organization
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Kati Lassila-Perini @katilp.bsky.social · 02/12/2024
This is what we've done with a small and dedicated team (🥰) during past ten years 🥳 cms.cern/news/cms-cel... Not going to lie, I'm pretty proud of this💪
cms.cern
CMS celebrates a decade of Open Data | CMS Experiment
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Kati Lassila-Perini @katilp.bsky.social · 02/12/2024
I'm new here so a brief introduction: PhD, experimental particle physicist @cmsexperiment.bsky.social based at CERN, employed by HIP - Helsinki Institute of Physics (🇫🇮 for those who see flags) Analysis background in Higgs physics, but long time active in #datapreservation, #opendata, #openscience
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