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Lucas Spangher

3 accepted papers

2025

Chatbot Arena Estimate: towards a generalized performance benchmark for LLM capabilities

NAACL 2025industry

In industrial LLM development, evaluating large language models (LLMs) is critical for tasks like benchmarking internal models and detecting regressions during fine-tuning, but existing benchmark aggregation methods, such as Elo-based systems, can be resource-intensive, public facing, and time-consu…

2024

Active Reinforcement Learning for Robust Building Control

AAAI 2024technical

Reinforcement learning (RL) is a powerful tool for optimal control that has found great success in Atari games, the game of Go, robotic control, and building optimization. RL is also very brittle; agents often overfit to their training environment and fail to generalize to new settings. Unsupervised…

2024

Position: Opportunities Exist for Machine Learning in Magnetic Fusion Energy

ICML 2024oral

Magnetic confinement fusion may one day provide reliable, carbon-free energy, but the field currently faces technical hurdles. In this position paper, we highlight six key research challenges in the field of fusion energy that we believe should be research priorities for the Machine Learning (ML) co…

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