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Piersilvio De Bartolomeis Profile
Piersilvio De Bartolomeis

@pdebartols

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PhD student @ETH || Machine Learning and Causal Inference

Joined September 2019
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@pdebartols
Piersilvio De Bartolomeis
12 days
Excited to announce our workshop on Causality in Science at #NeurIPS2025!. See you in San Diego 🌴🇺🇸.
@CauScien
CauScien
12 days
🚨 We’re thrilled to announce our NeurIPS 2025 workshop:.CausCien: Uncovering Causality in Science 🔍✨.We’re uniting ML + science communities to explore how causal learning advances:.🌿 Ecology 🧬 Biology 📊 Social Science & more!. 📝 Submit by Aug 22.👉
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@pdebartols
Piersilvio De Bartolomeis
2 months
RT @FannyYangETH: Register now (first-come first-served) for the "Math of Trustworthy ML workshop" at #LagoMaggiore, Switzerland, Oct 12-16….
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@pdebartols
Piersilvio De Bartolomeis
3 months
Landed in Singapore for #ICLR—excited to see old & new friends! I’ll be presenting:. 📌 RAMEN @ Main Conference on Saturday 10 am (@JavierAbadM @yixinwang_ @FannyYangETH).📌 Causal Lifting @ XAI4Science Workshop on Sunday (@riccardocadeii @ilkerdemirel_ @FrancescoLocat8 ).
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@pdebartols
Piersilvio De Bartolomeis
5 months
RT @riccardocadeii: Foundational models’ predictions (🦙♊️🦖) can propagate biases in causal downstream tasks, posing a significant risk in A….
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@pdebartols
Piersilvio De Bartolomeis
5 months
We also find that model scale matters for efficiency gains. Larger models yield more accurate outcome predictions, leading to smaller variance for H-AIPW (and thus smaller confidence intervals).
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@pdebartols
Piersilvio De Bartolomeis
5 months
We evaluate our estimator across several randomized experiments. Results show that H-AIPW consistently achieves the same statistical precision (i.e. confidence interval width) as the standard AIPW estimator, but with significantly smaller sample sizes.
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@pdebartols
Piersilvio De Bartolomeis
5 months
Key advantages of H-AIPW:.(1) Valid statistical inference – even if the foundation models are biased! .(2) Smaller confidence intervals. (3) No extra assumptions beyond those needed for valid inference in standard randomized experiments.
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@pdebartols
Piersilvio De Bartolomeis
5 months
Looking for a more efficient way to estimate treatment effects in your randomized experiment?. We introduce H-AIPW: a novel estimator that combines predictions from multiple foundation models with real experimental data.
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@pdebartols
Piersilvio De Bartolomeis
10 months
RT @CAUSALab: Sweater weather is better with #causal methodology!. @CAUSALab kicked off the Fall semester with a welcome back social. The e….
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@pdebartols
Piersilvio De Bartolomeis
11 months
RT @patrickc: Mario Draghi's new report on EU competitiveness doesn't mince words. "Across different metrics, a wide gap in GDP has opened….
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@pdebartols
Piersilvio De Bartolomeis
1 year
RT @AmartyaSanyal: The call for this position is now public. This will be jointly supervised with Prof. Amir Yehudayoff at @DIKU_Institut….
candidate.hr-manager.net
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@pdebartols
Piersilvio De Bartolomeis
1 year
RT @SimonsFdn: It is with great sadness that the Simons Foundation announces the death of its co-founder and chair emeritus, James Harris S….
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@pdebartols
Piersilvio De Bartolomeis
1 year
Come to our AISTATS poster (#96) this afternoon (5-7pm) to learn more about hidden confounding!.
@pdebartols
Piersilvio De Bartolomeis
2 years
Worried that hidden confounding stands in the way of your analysis? We propose a new strategy when a small RCT is available: quantify the confounding strength and make decisions accordingly. With @JavierAbadM, @DonhauserKonst & @FannyYangETH. 🧵(1/7)
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@pdebartols
Piersilvio De Bartolomeis
1 year
RT @alexmeterez: working with Antonio is the most fun I've ever had while also doing amazing research, go apply!.
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@pdebartols
Piersilvio De Bartolomeis
2 years
We validate our approach on various datasets, ranging from synthetic to real-world data (WHI). Code is available here: (7/7).
github.com
Implementation for the paper "Hidden yet quantifiable: A lower bound for confounding strength using randomized trials" - jaabmar/confounder-lower-bound
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@pdebartols
Piersilvio De Bartolomeis
2 years
We propose an alternative strategy: quantify the true confounding strength and discard the study only if the strength is large enough to affect conclusions. Our strategy (1) does not require parametric assumptions and (2) does not discard studies with small confounding. (6/7)
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@pdebartols
Piersilvio De Bartolomeis
2 years
Recent works have proposed 2 strategies:. #1: Combine estimators from the two studies -> requires assumptions to extrapolate. #2: Test for no unobserved confounding -> can discard "good" studies since some degree of confounding is likely present in real-world data. (5/7).
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