Michele Simoncelli (@SimoncelliMic) header
Michele Simoncelli (@SimoncelliMic) profile picture

Research on quantum transport phenomena & their applications to energy or information-management technologies @Columbia

New York
Joined October 2024
Photo by Michele Simoncelli (@SimoncelliMic)Photo by Michele Simoncelli (@SimoncelliMic)
Great to see our work featured on PRX!
A study shows that order-of-magnitude, disorder-induced variations of conductivity in network solids can be predicted from “bond-network entropy,” an atomistic structural descriptor that quantifies heterogeneity in the topology of the atomic-bond network. go.aps.org/49Z736U
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Our work on a #material extracted from a #meteorite that features hybrid crystal–glass thermal conductivity (i.e., remaining nearly constant over a wide temperature range) has been published! 👉 pnas.org/doi/10.1073/pnas.24…
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Michele Simoncelli retweeted
PSA for machine learning force field authors who already have or are planning to submit models to Matbench Discovery. There's a new dynamic scatter plot on the landing page (matbench-discovery.materials…) that allows comparing all 30 existing models against each other across 2 dozen metrics, hyper-parameters and model design choices. We hope that as new models and metrics get added to the leaderboard, this will surface empirical insights about which aspects of a model's design space positively or negatively impact certain metrics. For users of these ML force fields, we hope the dynamic nature of this plot will allow constructing exactly the Pareto front of metrics they care about to make a more informed decision on which potential best suits their research needs. To make this plot more informative, we encourage future model submission to be as detailed as possible in reporting the hyper-parameters and training procedure chosen for a given model. Existing submissions are welcome to backfill any data that wasn't originally recorded but could be helpful in this plot! There's an existing model schema on how to report e.g. graph construction cutoffs, max neighbor limits, learnings rates, layer counts, number of trainable parameters, etc. which will require extension to capture less common hyper-parameters as well as pre-training and fine-tuning stages in a standardized way. Happy to collaborate with everyone on that! The next step for this dynamic scatter plot is to report each model's inference time and memory usage at different system sizes. This will become the default values shown on the X axis as they establish a continuously updated cost-accuracy Pareto front for any metric on Matbench Discovery.
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Great to see progress by Orb in improving the speed and accuracy of their foundation machine-learning potential — and that our k_SRME metric has been helpful in the effort!
Replying to @MarkNeumannnn
Orb models represent near SoTA performance across a range of evaluations with an up to 10x reduction in latency and 8x reduction in memory for our lightest weight model. We've also trained conservative models for the first time, representing another point on this Pareto frontier.
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Great to see progress by Meta in improving the accuracy of #MachineLearning interatomic potentials in predicting macroscopic physical properties--and that our k_SRME metric is proving to be useful in this effort!
For existing MLIPs, lower test errors do not always translate to better performance in downstream tasks. We bridge this gap by proposing eSEN -- SOTA performance on compliant Matbench-Discovery (F1 0.831, κSRME 0.321) and phonon prediction. arxiv.org/abs/2502.12147 1/6
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Our k_SRME benchmark for foundational ML potentials (fMLPs)—used on the Matbench platform to test fMLPs' accuracy in describing many-body interatomic forces—has just been released #opensource (links below) Thanks to the dream team: @AhlawatParamvir @jrib_ @cyrusyc_tw Pota, Csányi
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Our group enjoyed the @ljc_cam Showcase Day at @Cambridge_Uni, sponsored by @radicalai, @valence_ai, and @QuantinuumQC. Congratulations to Kamil Iwanowski on winning the best talk prize and to Bogdan Rajkov for the best poster prize! Ad meliora et ad maiora semper! #ProudTeam
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Michele Simoncelli retweeted
Do you have any suggestions for good tutorials on developing machine learning potentials for #ML-literate undergrad students who have not done condensed matter or quantum chemistry courses?
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Great to see our heat-conductivity benchmark for foundation #machinelearning potentials featured on the Matbench Discovery platform—looking forward to scaling up this work!
Introducing SRME: a new metric for further assessment of foundational machine learning interatomic potentials! 👉A smaller SRME value indicates better performance for calculating thermal conductivity 🖥️matbench-discovery.materials… Huge thanks to Janosh @jrib_ & Yuan @cyrusyc_tw
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Michele Simoncelli retweeted
Introducing SRME: a new metric for further assessment of foundational machine learning interatomic potentials! 👉A smaller SRME value indicates better performance for calculating thermal conductivity 🖥️matbench-discovery.materials… Huge thanks to Janosh @jrib_ & Yuan @cyrusyc_tw
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Michele Simoncelli retweeted
Replying to @lonepair
@lonepair better MLIP metrics, as promised :) much work left to do but putting this out early to solicit feedback from all stakeholders linkedin.com/feed/update/urn…
Introducing SRME: a new metric for further assessment of foundational machine learning interatomic potentials! 👉A smaller SRME value indicates better performance for calculating thermal conductivity 🖥️matbench-discovery.materials… Huge thanks to Janosh @jrib_ & Yuan @cyrusyc_tw
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Michele Simoncelli retweeted
Great work! A clear reminder that materials discovery is about more than just convex hull F1 scores. More effort should go into supporting open-source benchmark builders like @jrib_ and @cyrusyc_tw, so the field can progress efficiently!
Introducing SRME: a new metric for further assessment of foundational machine learning interatomic potentials! 👉A smaller SRME value indicates better performance for calculating thermal conductivity 🖥️matbench-discovery.materials… Huge thanks to Janosh @jrib_ & Yuan @cyrusyc_tw
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The Doctoral and Research Awards Ceremony took place on Monday.🎉Special mention for the 2 PhD graduates from @Materials_EPFL who received awards: 🏅Inès Richard for the 2022 Wasserman Award 🏅Michele Simoncelli for the 2022 EPFL Doctorate Award Congratulations to both of them!
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Michele Simoncelli retweeted
Huge congratulations to @nicola_marzari's PhD student Michele Simoncelli on winning the 2020 Chorafas Foundation Award for his contributions to the quantum theory of heat conduction in solids! Bravo! nccr-marvel.ch/de/news/award…
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Michele Simoncelli retweeted
Congratulations to Narges Atrak @uni_iceland, Menno Bokdam @univienna; Michele Simoncelli and Robert Baldock @EPFL_en, winners of the best poster award at COMDI 2018! Nice work... #compchem #materials
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Michele Simoncelli retweeted
Congratulations to the 2020 Chorafas awardees Oliver Selmoni actu.epfl.ch/news/dimitris-n… and Michele Simoncelli actu.epfl.ch/news/dimitris-n…
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Michele Simoncelli retweeted
Unified theory of thermal transport in crystals and glasses go.nature.com/2VWjKFX