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Panagiotis Tigas

8 accepted papers

2026

MADE: Benchmark Environments for Closed-Loop Materials Discovery

ICML 2026poster

Existing benchmarks for computational materials discovery primarily evaluate static predictive tasks or isolated computational sub-tasks. While valuable, these evaluations neglect the inherently iterative and adaptive nature of scientific discovery. We introduce MAterials Discovery Environments (MAD…

Cited by 0SourceScholar
2024

Amortized Active Causal Induction with Deep Reinforcement Learning

NeurIPS 2024poster

We present Causal Amortized Active Structure Learning (CAASL), an active intervention design policy that can select interventions that are adaptive, real-time and that does not require access to the likelihood. This policy, an amortized network based on the transformer, is trained with reinforcement…

Cited by 2SourcePDFScholar
2024

Challenges and Considerations in the Evaluation of Bayesian Causal Discovery

ICML 2024poster

Representing uncertainty in causal discovery is a crucial component for experimental design, and more broadly, for safe and reliable causal decision making. Bayesian Causal Discovery (BCD) offers a principled approach to encapsulating this uncertainty. Unlike non-Bayesian causal discovery, which rel…

Cited by 4SourcePDFScholar
2024

Deep Bayesian Active Learning for Preference Modeling in Large Language Models

NeurIPS 2024poster

Leveraging human preferences for steering the behavior of Large Language Models (LLMs) has demonstrated notable success in recent years. Nonetheless, data selection and labeling are still a bottleneck for these systems, particularly at large scale. Hence, selecting the most informative points for ac…

2023

Differentiable Multi-Target Causal Bayesian Experimental Design

ICML 2023poster

We introduce a gradient-based approach for the problem of Bayesian optimal experimental design to learn causal models in a batch setting --- a critical component for causal discovery from finite data where interventions can be costly or risky. Existing methods rely on greedy approximations to constr…

2022

Interventions, Where and How? Experimental Design for Causal Models at Scale

NeurIPS 2022accept

Causal discovery from observational and interventional data is challenging due to limited data and non-identifiability which introduces uncertainties in estimating the underlying structural causal model (SCM). Incorporating these uncertainties and selecting optimal experiments (interventions) to per…

2021

Causal-BALD: Deep Bayesian Active Learning of Outcomes to Infer Treatment-Effects from Observational Data

NeurIPS 2021poster

Estimating personalized treatment effects from high-dimensional observational data is essential in situations where experimental designs are infeasible, unethical, or expensive. Existing approaches rely on fitting deep models on outcomes observed for treated and control populations. However, when me…

2021

Shifts: A Dataset of Real Distributional Shift Across Multiple Large-Scale Tasks

NeurIPS 2021poster

There has been significant research done on developing methods for improving robustness to distributional shift and uncertainty estimation. In contrast, only limited work has examined developing standard datasets and benchmarks for assessing these approaches. Additionally, most work on uncertainty e…

Cited by 160SourcecodeScholar