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Wojciech Stark Profile
Wojciech Stark

@wgstark

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AI for chemistry Postdoc @imperialcollege @aichemyhub Previously: PhD @uniofwarwick @compsurfchem, BSc/MSc @PW_edu

Joined November 2009
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@wgstark
Wojciech Stark
1 year
Now published in @MLSTjournal!.If you're interested in knowing more about the performance of different MLIPs in terms of both accuracy and efficiency, have a read:.
@wgstark
Wojciech Stark
1 year
⚠️New preprint⚠️"Benchmarking of MLIPs for reactive hydrogen dynamics at metal surfaces" is now available on arXiv: Work with Cas van der Oord, @IlyesBatatia, Yaolong Zhang, Bin Jiang, Gábor Csányi, and @reinimau. ⬇️.
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@wgstark
Wojciech Stark
2 months
RT @DynamicsSIAM: "Machine Learning and Data-Driven Methods in Computational Surface and Interface Science" (by Lukas Hörmann, Wojciech G.….
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arxiv.org
Nanoscale design of surfaces and interfaces is essential for modern technologies like organic LEDs, batteries, fuel cells, superlubricating surfaces, and heterogeneous catalysis. However, these...
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26 days
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@wgstark
Wojciech Stark
1 year
RT @reinimau: We have a 2-year postdoc position available in the group. Please share widely. The application deadline is September 24th. h….
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@wgstark
Wojciech Stark
1 year
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@wgstark
Wojciech Stark
1 year
RT @lbpartay: We are excited to organise the Computational Molecular Science meeting in Warwick again, bringing the modelling community tog….
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@wgstark
Wojciech Stark
1 year
This is why we need MLIPs that are both highly accurate and computationally efficient. In this work, we show a detailed analysis of the performance of state-of-the-art MLIPs, including ACE, MACE, REANN, and PaiNN, revealing their stronger and weaker sides. Have a good read! 📃🏞️.
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@wgstark
Wojciech Stark
1 year
Gas-surface systems often require running millions of MD trajectories, to model important dynamical observables, such as reaction probabilities. 🥲Additionally, such properties are highly sensitive to the PES landscape, especially around the reaction barrier.😰⬇️.
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@wgstark
Wojciech Stark
1 year
⚠️New preprint⚠️"Benchmarking of MLIPs for reactive hydrogen dynamics at metal surfaces" is now available on arXiv: Work with Cas van der Oord, @IlyesBatatia, Yaolong Zhang, Bin Jiang, Gábor Csányi, and @reinimau. ⬇️.
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@wgstark
Wojciech Stark
2 years
RT @JPhysChem: Adaptive sampling with uncertainty quantification of dynamic reaction probabilities reveals the importance of equivariance a….
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pubs.acs.org
The reactive chemistry of molecular hydrogen at surfaces, notably dissociative sticking and hydrogen evolution, plays a crucial role in energy storage and fuel cells. Theoretical studies can help to...
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@wgstark
Wojciech Stark
2 years
Many thanks to all the co-authors: @JWestermayr, @oskar_douglas, James Gardner, Scott Habershon, and @reinimau from @compsurfchem for their incredible help! 🧵[6/6].
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@wgstark
Wojciech Stark
2 years
We happily share all the important scripts for gas-surface database generation through adaptive sampling (using the NQCDynamics.jl package) in the GitHub repository: Further instructions can be accessed here: .🧵[5/6]
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@wgstark
Wojciech Stark
2 years
As expected, the equivariant PaiNN models outperform invariant SchNet quite significantly and in every studied aspect. Here, elbow plots generated with SchNet show worrying instabilities, whereas using the same database, PaiNN models provide accurate and smooth PESs. 🧵[4/6]
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@wgstark
Wojciech Stark
2 years
We show that employing uncertainty quantification (UQ) is necessary to establish the "real" convergence, due to possible high prediction errors, which may cause "false positive" results.🧵[3/6].
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@wgstark
Wojciech Stark
2 years
We employ adaptive sampling to iteratively train invariant and equivariant (SchNet and PaiNN) models for H2 dissociative adsorption on Cu surfaces, and rather than assessing their performance based only on RMSEs or MAEs, we directly compare reaction probability predictions🧵[2/6]
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@wgstark
Wojciech Stark
2 years
Finally published (@JPhysChem C)!🚨💫 Are RMSE/MAE metrics enough to assess the performance of ML interatomic potentials? We present adaptively trained MLIPs with a direct assessment of performance through dynamical observables including full UQ. 🧵[1/6].
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pubs.acs.org
The reactive chemistry of molecular hydrogen at surfaces, notably dissociative sticking and hydrogen evolution, plays a crucial role in energy storage and fuel cells. Theoretical studies can help to...
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@wgstark
Wojciech Stark
2 years
RT @JWestermayr: 📢 Hi #compchem and #ML community. I have an open PhD position I seek to fill as soon as possible. The focus is on ML for o….
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@wgstark
Wojciech Stark
2 years
RT @IdilIsmail20: For a gentle introduction to common tools and methods used in computational science, check out our latest preprint now up….
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@wgstark
Wojciech Stark
2 years
RT @reinimau: We are currently advertising three PhD studentships in my research group (@compsurfchem at @warwickchem ):. PhD project 1:.Co….
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@wgstark
Wojciech Stark
2 years
RT @ML_Chem: Importance of equivariant features in machine-learning interatomic potentials for reactive chemistry at metal surfaces. (arXiv….
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@wgstark
Wojciech Stark
2 years
RT @compsurfchem: The M3S Conference ( is in full flow! Some pics from today’s hike around the Lake District ⛰️ fea….
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