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Rens Holmer

@holmrenser.bsky.social
120 followers 250 following 90 posts

Bioinformatics and Data Science lecturer @w-u-r.bsky.social.

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Rens Holmer @holmrenser.bsky.social · 02/10/2026
BRB updating my data visualization course material
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Rens Holmer @holmrenser.bsky.social · 24/09/2026
Once again the memes just write themselves
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Marnix Medema @marnixmedema.bsky.social · 18/09/2026
Excited that our @w-u-r.bsky.social Bioinformatics team is involved in three funded projects in the NWO KIC Biochemical Diversity Programme. Kudos to @jjjvanderhooft.bsky.social for his leadership on the TERRAPATH project. Looking forward to fun collaborative science! www.wur.nl/en/news/nwo-...
wur.nl
NWO funding for research into biochemical alternatives
Four WUR projects receive NWO funding: one project investigates natural compounds for new flavours and fragrances, and two projects investigate more sustainable crop protection.
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Genome Biology and Evolution @genomebiolevol.bsky.social · 17/09/2026
Chen et al. show that a substantial fraction of predicted orphan genes lacks expression support, and they exhibit distinct sequence and evolutionary signatures from expressed orphans. 🔗 academic.oup.com/gbe/article/... #societyjournal #genome #evolution
academic.oup.com
Identification and Classification of Expressed Orphan Genes, Spurious Orphan Genes, and Conserved Genes in the Human Gut Microbiome
Abstract. Orphan genes (OGs)—genes lacking detectable homologs outside a species—are widespread in microbial genomes and are thought to contribute to their
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Daniel Probst @skepteis.bsky.social · 16/09/2026
If anyone is or knows a master's student in the Netherlands who fits this call and who is interesting in ML, let me know :-). www.nwo.nl/en/calls/mos...
nwo.nl
Mosaic 3.0 | NWO
The Mosaic PhD scholarship programme encourages graduates with a non-Western migration background—a group underrepresented in the Dutch scientific community—to pursue a career in science.
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Jo Wolff @jowolff.bsky.social · 14/09/2026
The fallacy that University leaders pushing AI are falling into is thinking that the point of undergraduate research is to find things out. It isn't. What students find out is typically already generally known. The point of undergraduate research is to learn how to find things out.
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Rens Holmer @holmrenser.bsky.social · 29/08/2026
I like to think I’m not too much of an AI doomer, but this just doesn’t look right…
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Marnix Medema @marnixmedema.bsky.social · 04/08/2026
New postdoc opportunity in our team! Topic is computational analysis of (meta)genomic data to study evolution of plant-microbiome interactions. Part of the AEGIS consortium (aegisearth.bio/en). Apply here: www.wur.nl/en/vacancy/p... Please RT!
wur.nl
Postdoc on computational (meta)genomic analysis
Climate change is one of the greatest challenges for global food security, requiring new approaches to understand and harness the natural diversity that enables plants and their associated microbiomes...
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Nils Homer @nilshomer.com · 31/07/2026
Meritocracy and competition is great, and the moat due to implementation effort is gone, but we also have to remember the relational side of bioinformatics.
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Daniel Probst @skepteis.bsky.social · 30/07/2026
FloDR: An invertible dimensionality reduction method based on a normalising flow ... combining the advantages of PCA with those of UMAP. We also show what the map "hides" in the remaining dimensions and how wrong it is when two points with different labels are close. arxiv.org/pdf/2607.26278
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Grace @gracekind.net · 21/07/2026
> show us how good you are at exploits > no, not like that
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Rens Holmer @holmrenser.bsky.social · 18/07/2026
EiC of Science questioning whether people use search engines for *checks notes* “searching” was not on my 2026 bingo card
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Rens Holmer @holmrenser.bsky.social · 11/07/2026
Don’t get me wrong, I think applications of fundamental science are _really_ important, but I also think this is the perfect analogy
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Suitch @suitch-co.bsky.social · 07/07/2026
🔬 Bioinformatics | Group Leader, Theoretical Biology @ MPI for Evolutionary Biology Independent group, own PhD funding included, fixed term up to six years. Apply by Sep 1, 2026. www.mpg.de/26854220/group-leader-in… #Bioinformatics #BioinfJobs
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Rens Holmer @holmrenser.bsky.social · 04/07/2026
Be more Larry
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Rens Holmer @holmrenser.bsky.social · 29/06/2026
I’m a simple man: I see a Gaussian Process, I click the like button. (Also this is awesome work on protein engineering in general)
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Rens Holmer @holmrenser.bsky.social · 12/06/2026
Happy to have played a small part in this, congrats to all involved 🎉 Studying spatiotemporal dynamics in roots is not easy, it was inspiring to see @wkohlen.bsky.social dig in for years to get to the bottom of this story!
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Wolfgang Huber @wkhuber.bsky.social · 10/06/2026
One of the good things about the AI co-scientist brouhaha is that it makes us discuss what science *is*, and how to measure its value, impact, quality. — Questions that have been there all along, but many preferred to gloss over.
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Daniel Probst @skepteis.bsky.social · 04/06/2026
New preprint out. Nice work by @jose-e.bsky.social and Baoquan Chen. In a nutshell, our architecture takes in a set of graphs (e.g. molecules in a reaction) and interleaves node-level feature propagation and cross-graph contextual modelling at every layer of a GNN. arxiv.org/abs/2606.05116
The attached figure depicts a single layer (a GraphSetConv block) of the GraphSetTransformer GNN.
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Philip Ball @philipcball.bsky.social · 18/04/2026
But what is getting folks excited here is that this DRT system reveals a way in which sequence information can be read back from protein to DNA. And that is where the finding impacts on Crick's Central Dogma. /15
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Phil Ewels @ewels.bsky.social · 02/04/2026
I'm both excited and a little terrified. It feels like a wave of AI-assisted tool rewrites is coming to bioinformatics whether we like it or not. We figured that the best we can do is to try to get ahead of it, so we wrote down some principles for doing it responsibly: rewrites.bio
rewrites.bio
rewrites.bio - A manifesto for bioinformatics
Principles for responsible AI-assisted rewriting of bioinformatics tools.
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Chris Jackson @cajackson.org · 11/03/2026
Pretty much the same reason all the gene regulatory network inference models don't work as well as people think they do
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Retraction Watch @retractionwatch.com · 10/03/2026
We're thrilled to announce the Ctrl-Z Award, a US$2,500 prize for researchers “who discover substantial errors in their published work and take meaningful steps to correct the scientific record." Covered by @nature.com today; read more here: centerforscientificintegrity.org/2026/03/10/a...
nature.com
Keep calm and be transparent: advice from scientists who retracted their papers
Retractions correct the scientific record, but they have stigma attached to them. Some in the research community want that to change.
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Arc Institute @arcinstitute.org · 04/03/2026
Evo 2, the largest fully open biological AI model to date, is now published in @nature.com youtu.be/o_w-E--u7GQ
youtu.be
Building Evo 2: A Frontier DNA Language Model
YouTube video by Arc Institute
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Scott 𐚁 🦇 Cave 🦇 @hellabarnes.bsky.social · 02/03/2026
we talk about carcinization, but never about the many, many times plants have invented the “tree.” Tree is not a kind of plant, it is a thing plats do, and they are by and large unrelated.
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Andrew Rambaut (🐏🎀) @arambaut.bsky.social · 28/02/2026
So I pleased to announce the conceptual spawn of FigTree: PearTree (acronym still to be finalised). If you want to dive right in it is hosted as a web app here: artic-network.github.io/peartree (click the “Example...” button for immediate candy and then click every button you can find).
artic-network.github.io
PearTree — Phylogenetic Tree Viewer
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Anne Kupczok @annecmg.bsky.social · 25/02/2026
Sounds like a great opportunity for a professor position in computational biology in the Netherlands careers.universiteitleiden.nl/job/Assistan...
careers.universiteitleiden.nl
Assistant/Associate/Full Professor Computational Biology
Assistant/Associate/Full Professor Computational Biology
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Rens Holmer @holmrenser.bsky.social · 20/02/2026
Students being students: I found this when logging on to the lecture room PC this morning. Translation: “R is not fun <redacted>” 😂
A windows login screen where someone has entered “R is niet leuk lol poopie” as login name
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The Arabidopsis Information Resource (TAIR) @tairnews.bsky.social · 19/02/2026
🎉📣 #TAIR12, the latest reannotation of the Arabidopsis thaliana genome, is now available under accession number PRJEB100887 on ENA and NCBI! Thank you all the volunteer researchers whose hard work has made this possible! #plantscience #plantbiology 🧪 bit.ly/3ZHtneT
bit.ly
Announcing the publication of TAIR12: Consult the fully reannotated genome on the European Nucleotide Archive - Phoenix Bioinformatics
TAIR (The Arabidopsis Information Resource), together with our nonprofit host Phoenix Bioinformatics, is pleased to announce the public release of TAIR12
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Rens Holmer @holmrenser.bsky.social · 12/02/2026
Our chairgroup Bioinformatics at Wageningen University changed leadership: prof. Dick de Ridder (@dickderidder.bsky.social) moved on to become Dean of Education and is now followed up by prof. Marnix Medema. Congrats @marnixmedema.bsky.social! www.wur.nl/en/news/marn...
wur.nl
Marnix Medema appointed chair of Bioinformatics at WUR
Marnix Medema has been appointed Chair of the Bioinformatics Group at Wageningen University & Research as of 1 February. He aims to further strengthen bioinformatics as a connecting discipline within ...
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Rens Holmer @holmrenser.bsky.social · 12/02/2026
Vibecoding when you’re a proficient programmer
media.tenor.com
a knight with a helmet and a sword says " this is the way "
ALT: a knight with a helmet and a sword says " this is the way "
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Rens Holmer @holmrenser.bsky.social · 08/02/2026
Nothing but respect for the authors who made the difficult call to retract published work after facing public scrutiny: www.science.org/doi/10.1126/... But also: scientific publishing is fundamentally broken if we see this case as anything other than a win for science!
science.org
RETRACTED: Integrative phylogenomics positions sponges at the root of the animal tree
Determining whether sponges or ctenophores root the animal tree has important implications for understanding early animal evolution. Here, we examined support for these competing hypotheses by constru...
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Rens Holmer @holmrenser.bsky.social · 08/02/2026
Super interesting thread on vibecoding: translating an existing approach from c++ to rust. TLDR it’s not straightforward at all! Even though the information is there, many crucial parts are omitted/incorrect.
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Rens Holmer @holmrenser.bsky.social · 28/01/2026
Preprint your work! TIL I learned the animal phylogenomics paper has been asked to be retracted, which might have been avoided if it was looked at by more than a handful of rushed anonymous academics.
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Dolf Weijers @dolfweijers.bsky.social · 28/01/2026
www.wur.nl/en/vacancy/f... Become our new colleague (and next door neighbor) and lead a chair/group/department of Biophysics at Wageningen University. Reach out to me for info and please spread!!!
wur.nl
Full Professor and Chair Laboratory of Biophysics
We are looking for a Full Professor in the Biophysics chair group, part of Wageningen University & Research (WUR)
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Molly White @molly.wiki · 15/01/2026
Sure. AI companies have ALWAYS been training their models on Wikipedia content, which under the free and open access model is available to anyone — including AI companies. Agreements like these require AI companies to limit and offset the strain they place on Wikimedia infrastructure.
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Heng Li @lh3lh3.bsky.social · 14/01/2026
I am looking for a postdoc to develop high-performance algorithms in computational genomics. Email or DM me if interested. For more information, see hlilab.github.io/vacancies. RTs appreciated!
hlilab.github.io
HLi Lab - Vacancies
Openings
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Rens Holmer @holmrenser.bsky.social · 12/01/2026
It took me forever to realize this after reading Pearl’s The Book of Why
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Heng Li @lh3lh3.bsky.social · 06/01/2026
Now published in Algorithms for Molecular Biology: link.springer.com/article/10.1.... Key message: a tiny CNN model with 7k parameters can capture main splice signals across vertebrates+insect and halves the minimap2 & miniprot junction error rate. I always use this new feature now.
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Heng Li @lh3lh3.bsky.social · 06/01/2026
Now published in gigascience: academic.oup.com/gigascience/.... Key messages: SVs are highly enriched in low-complexity/tandem-repeat regions and are harder to call. They behave differently from transposon insertions. Always stratify if you study SVs.
academic.oup.com
Validate User
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Thijs J. G. Ettema 🦠🔬🇳🇱🇸🇪🇪🇺 @ettema.bsky.social · 05/01/2026
I have a postdoc position in metagenomic exploration available in my group. Candidates with documented experience in phylo & metagenomics and preferably with petabase-scale data mining and GLM workflows are encouraged to apply. Come join us! 🧬🦠💻 Please repost Apply here: www.wur.nl/en/vacancy/p...
wur.nl
Postdoctoral researcher Phylogenomics and metagenomics
Are you just as excited as we are about the fascinating world of microorganisms? Do you want to contribute to exploring and genomically characterize novel prokaryotic lineages? Do you have a PhD degre...
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Nina Markl 🏳️‍⚧️🏳️‍🌈 @ninamarkl.bsky.social · 05/01/2026
happy ‘i will reply to your email on my return’ day to all who celebrate
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Rens Holmer @holmrenser.bsky.social · 05/01/2026
I’m so far removed from this field that saying “there is no causal inference” for me is at least a lukewarm take.
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Rens Holmer @holmrenser.bsky.social · 28/12/2025
Apropos of nothing: I just realized serde literally derives from serializing/deserializing despite having used it a bunch. No I didn’t read the docs, yes I feel stupid 🙃
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Dr Alex Bond @thelabandfield.bsky.social · 25/12/2025
On the first day of Christmas (in about 2014), @duckswabber.bsky.social gave to me - a partridge in a pear tree. Happy Christmas everyone!
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Vandepoele lab @vandepoelelab.bsky.social · 23/12/2025
We are pleased to announce the official release of PLAZA 5.1, our plant genomics platform, which comes with a major front-end redesign. This results in improved performance, enhanced visualization tools, and refined Toolboxes. Src: www.vandepoelelab.be/plaza/news#28
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Rens Holmer @holmrenser.bsky.social · 18/12/2025
Wishing everyone a safe Christmas break!
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Marnix Medema @marnixmedema.bsky.social · 13/12/2025
Now available online: the new 2.0 version of gutSMASH, with capabilities to detect 12 new types of catabolic gene clusters relevant to gut microbiome ecology, as well as predictions of their regulation through transcription factor binding site detection. www.sciencedirect.com/science/arti...
sciencedirect.com
gutSMASH 2.0: Extended Identification of Primary Metabolic Gene Clusters From the Human Gut Microbiota
Microbiota-derived metabolites serve as key messengers mediating host–microbe and microbe–microbe interactions, often through specialized primary meta…
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