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#preprint

7 posts5 participants0 posts today

🔴 **Long-term hunter-gatherer continuity in the Rhine-Meuse region was disrupted by local formation of expansive Bell Beaker groups**

“_We document an exception to this pattern in the wider Rhine-Meuse area in communities in the wetlands, riverine areas, and coastal areas of the western and central Netherlands, Belgium and western Germany, where we assembled genome-wide data for 109 people 8500-1700 BCE. Here, a distinctive population with high hunter-gatherer ancestry (∼50%) persisted up to three thousand years later than in continental European regions, reflecting limited incorporation of females of Early European Farmer ancestry into local communities._”

Olalde, I. et al. (2025) 'Long-term hunter-gatherer continuity in the Rhine-Meuse region was disrupted by local formation of expansive Bell Beaker groups,' bioRxiv (Cold Spring Harbor Laboratory) [Preprint]. doi.org/10.1101/2025.03.24.644.

#Preprint #Science #Biology #Genetics #Archaeology #Archaeodons #Anthropology #Europe @archaeodons

One month left to provide feedback on our preprint "Rainfall recharge thresholds decrease after an intense fire over a near-surface cave at Wombeyan, Australia."

We are keen for some constructive feedback to improve the paper :)

egusphere.copernicus.org/prepr

#hydrology #KarstHydrology #Groundwater #preprint

@Andbaker

egusphere.copernicus.orgRainfall recharge thresholds decrease after an intense fire over a near-surface cave at Wombeyan, AustraliaAbstract. Quantifying the amount of rainfall needed to generate groundwater recharge is important for the sustainable management of groundwater resources. Here, we quantify rainfall recharge thresholds using drip loggers situated in a near-surface cave: Wildman’s cave at Wombeyan, southeast Australia. In just over two years of monitoring, 42 potential recharge events were identified in the cave, approximately 4 m below land surface which comprises a 30° slope with 37 % bare rock. Recharge events occurred within 48 hours of rainfall. Using daily precipitation data, the median 48 h rainfall needed to generate recharge was 19.8 mm, without clear seasonal variability. An intense experimental fire experiment was conducted 18 months into the monitoring period: the median 48 h rainfall needed to generate recharge was 22.1 mm before the fire (n=22) and 16.4 mm after the fire (n=20), with the decrease in rainfall recharge most noticeable starting three months after the fire.. Rainfall recharge thresholds and number of potential recharge events at Wildman’s Cave are consistent with those published from other caves in water-limited Australia. At Wildman’s Cave, we infer that soil water storage, combined with the generation of overland flow over bare limestone surfaces is the pathway for water movement to the subsurface via fractures and that these determine the rainfall recharge threshold. Immediately after the fire, surface ash deposits initially retard overland flow, and after ash removal from the land surface, soil loss and damage decrease the available soil water storage capacity, leading to more efficient infiltration and a decreased rainfall recharge threshold.

Interested in knowing more about data-sharing, code-sharing, and software reporting quality in ecology?

Do you want to know if journal policies even matter?

We have now updated our #preprint after a wonderful round of reviews at @PeerCommunityIn

We thank our recommender and reviewers for helping us improve our contribution.

For a summary of our results, check out this thread: ecoevo.social/@ASanchez_Tojar/

📰 doi.org/10.32942/X21S7H

💻 github.com/ASanchez-Tojar/code

🔴 **Monitoring Reasoning Models for Misbehavior and the Risks of Promoting Obfuscation**

“_While we show that integrating CoT monitors into the reinforcement learning reward can indeed produce more capable and more aligned agents in the low optimization regime, we find that with too much optimization, agents learn obfuscated reward hacking, hiding their intent within the CoT while still exhibiting a significant rate of reward hacking._”

Baker, B. et al. (2025) Monitoring reasoning models for misbehavior and the risks of promoting obfuscation. arxiv.org/abs/2503.11926.

#AI #ArtificialIntelligence #LLM #LLMS #ComputerScience #Obfuscation #Preprint #Academia #Academics @ai @computerscience

arXiv logo
arXiv.orgMonitoring Reasoning Models for Misbehavior and the Risks of Promoting ObfuscationMitigating reward hacking--where AI systems misbehave due to flaws or misspecifications in their learning objectives--remains a key challenge in constructing capable and aligned models. We show that we can monitor a frontier reasoning model, such as OpenAI o3-mini, for reward hacking in agentic coding environments by using another LLM that observes the model's chain-of-thought (CoT) reasoning. CoT monitoring can be far more effective than monitoring agent actions and outputs alone, and we further found that a LLM weaker than o3-mini, namely GPT-4o, can effectively monitor a stronger model. Because CoT monitors can be effective at detecting exploits, it is natural to ask whether those exploits can be suppressed by incorporating a CoT monitor directly into the agent's training objective. While we show that integrating CoT monitors into the reinforcement learning reward can indeed produce more capable and more aligned agents in the low optimization regime, we find that with too much optimization, agents learn obfuscated reward hacking, hiding their intent within the CoT while still exhibiting a significant rate of reward hacking. Because it is difficult to tell when CoTs have become obfuscated, it may be necessary to pay a monitorability tax by not applying strong optimization pressures directly to the chain-of-thought, ensuring that CoTs remain monitorable and useful for detecting misaligned behavior.

My next @preLights post is out. I saw this first preprint from the Storer lab a while back (thanks to a toot from @CellySally) and took some time over writing it but I think it was worth it!

I really enjoyed going back to some developmental biology with this study on how the ECM and mechanical environment influence limb regeneration. Also, nice that my PhD department, PDN, was heavily involved!

prelights.biologists.com/highl

preLightsHyaluronic Acid and Emergent Tissue Mechanics Orchestrate Digit Tip Regeneration - preLightsMui and team show hyaluronic acid deposition and a soft ECM promote digit regeneration in mice.

Evaluating #Multilingual #Metadata Quality in #Crossref / Dennis Donathan II, Mike Nason, Marco Tullney, Julie Shi, Juan Pablo Alperin
arxiv.org/abs/2503.11853

arXiv.orgEvaluating Multilingual Metadata Quality in CrossrefIntroduction: Scholarly research spans multiple languages, making multilingual metadata crucial for organizing and accessing knowledge across linguistic boundaries. These multilingual metadata already exist and are propagated throughout scholarly publishing infrastructure, but the extent to which they are correctly recorded, or how they affect metadata quality more broadly is little understood. Methods: Our study quantifies the prevalence of multilingual records across a sample of publisher metadata and offers an understanding of their completeness, quality, and alignment with metadata standards. Utilizing the Crossref API to generate a random sample of 519,665 journal article records, we categorize each record into four distinct language types: English monolingual, non-English monolingual, multilingual, and uncategorized. We then investigate the prevalence of programmatically-detectable errors and the prevalence of multilingual records within the sample to determine whether multilingualism influences the quality of article metadata. Results: We find that English-only records are still in the vast majority among metadata found in Crossref, but that, while non-English and multilingual records present unique challenges, they are not a source of significant metadata quality issues and, in few instances, are more complete or correct than English monolingual records. Discussion & Conclusion: Our findings contribute to discussions surrounding multilingualism in scholarly communication, serving as a resource for researchers, publishers, and information professionals seeking to enhance the global dissemination of knowledge and foster inclusivity in the academic landscape.

When should I preprint my work?

People often come up to me and say, “Dermot, do you have the money now?”* But other times they will come up to me and ask “Dermot, when should I preprint my work?” This is a great question, and the general answer is, “whenever it suits you best”.  The important thing is that your work is out there, unpaywalled, and accessible to the world. So the specific timing might be more down to individual preferences, journal policies (like time-limited embargos), or some other factors.

But, by and large, there is nothing to stop you preprinting your own work, and at a time of your choosing.  There may be exceptions, but they will represent a tiny minority of cases. Here’s a nice introduction to preprinting – that covers motivations and advice for how to get started with preprinting your work.

So when and why do people decide to preprint? Let’s look briefly at different stages of the publication cycle and think why you might want to preprint your work at each point.

At the draft stage?

You can preprint your work before or after your first submission to a journal to get your fully-formed ideas out in the world as soon as possible, with a DOI, and time-stamped confirmation! It provides opportunities for early feedback, increased exposure, and let’s you claim precedence for your ideas.

After a round of reviews?

When you’ve revised a paper, you can preprint what is likely to be an almost final version that you know has had peer feedback. So, it’s still being released well before it appears “in print”, but with the knowledge that you’ve had input from your peers.

When it’s been accepted for publication?

Although later in the publication process, preprinting at this point can still be months before a journal version appears online, so it’s still really worthwhile doing it. And preprinting at this stage perhaps gives authors added confidence, knowing it’s been formally accepted and having gone through a full peer-review process.

Post-publication?

Even if your paper has been published, you can still “Preprint” (or postprint) your non-formatted manuscript version. This has the advantage that your work will remain freely accessible through “green open access”, even if the journal version is behind a paywall. An added bonus is that you don’t have to pay exorbitant fees to a publisher to make your work open access.

I think that more important than when you preprint, is that you do preprint, making your work open and accessible to all. If you’re looking for a place to preprint your work, there are lots of options from very general repositories like Zenodo or OSF Preprints, discipline-specific ones like the PsyArXiv, ArXiV, BodoArXiv, or AgriArXiv (see here for lots more preprint communities), or even region-specific repositories like AfricArXiv. So, if you haven’t preprinted before, make this the year that you do!

Dermot Lynott is an Associate Professor at Maynooth University, and the current chair of the PsyArXiv Scientific Advisory Board.

* I think I originally heard Dylan Moran make this joke, so thank you Dylan!

osf.ioOSF

Happy to share my latest preprint: "Using network component analysis to study axenisation strategies for phototrophic eukaryotic microalgae"

(DOI: dx.doi.org/10.1101/2025.03.07.).

We revisited all publications in the last century focusing on the axenisation of microalgae, and used Network Component Analysis to understand how workflows can be (re-)desgined to remove contaminating microbes from microalgal cultures.

#preprint #microalgae @academicchatter @academia

Together with Simone Hu, we have a new #preprint in theoretical #physics, or rather #mathematics.
The upshot is that there is a certain formulation of #Feynman integrals that is useful in a class of #quantum field theories (namely, 1-dimensional topological directions in holomorphic-topological theories). The integrand of these integrals is what we call "topological form".
On the other hand, there is a family of integrals that detects cohomology classes in the odd graph complex. That means, they find out whether some graph can be generated by shrinking edges in a certain way. The integrand in these integrals is called "Pfaffian form".
In our new preprint, we prove that the Pfaffian form and the topological form are the same.
arxiv.org/abs/2503.09558

arXiv.orgThe Topological form is the Pfaffian formFor a given graph $G$, Budzik, Gaiotto, Kulp, Wang, Williams, Wu, Yu, and the first author studied a ''topological'' differential form $α_G$, which expresses violations of BRST-closedness of a quantum field theory along a single topological direction. In a seemingly unrelated context, Brown, Panzer, and the second author studied a ''Pfaffian'' differential form $ϕ_G$, which is used to construct cohomology classes of the odd commutative graph complex. We give an explicit combinatorial proof that $α_G$ coincides with $ϕ_G$. We also discuss the equivalence of several properties of these forms, which had been established independently for both contexts in previous work.

#Preprint sites #bioRxiv and #medRxiv launch new era of independence
The popular repositories, where life #scientists post research before #peerreview, will be managed by a new organization called #openRxiv.
Until now, they had been managed by Cold Spring Harbor Laboratory. The new organization, named openRxiv, will have a board of directors and a scientific and medical advisory board. It is supported by a fresh US$16M grant from Chan Zuckerberg Initiative (CZI).
nature.com/articles/d41586-025

www.nature.comPreprint sites bioRxiv and medRxiv launch new era of independenceThe popular repositories, where scientists post research before peer review, will be managed by a new organization called openRxiv.