Michael Kirchhof

Michael Kirchhof

mkirchhof.bsky.social

RS on uncertainty quantification for agents at Apple

👤 Joined on 19 November 2024

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  • 19 Kas 2024, 13:22
    🎉 Bluesky'e katıldı - İlk kullanıcı adı: @mkirchhof.bsky.social

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29 June 2026 14:37

🚀 We're hiring a Research Scientist, Machine Learning Research (MLR), Barcelona ☀️ 👉 Apply here: jobs.apple.com/en-us/detail... #MachineLearning #MLResearch #AI #Hiring #Apple #Barcelona #ResearchScientist #DeepLearning

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Jensen's inequality

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Within just 3 years, Victor's work and contributions led to 3 x NeurIPS, 2 x ICML, 1 x ICRA, 1 x preprint. @vletzelter.bsky.social is a brilliant, yet humble researcher and a joy to work with. We're super proud of his progress, wish him good luck and congratulate the lab that will have him ^^

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How can agents learn in long, open-ended tasks where success is rare and rewards are sparse? 👀 🚨 Enter ∆Belief-RL: We show how to use agent’s own belief updates as a dense reward for turn-level credit assignment. The result? Surprisingly strong generalization. (1/8) 🧵⬇️

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13 February 2026 16:23

Another interesting finding was how little the loss of token-selection methods tells about downstream factual accuracy on its own. Across multiple methods and model scales, validation loss (both on tokens where the model called, didn’t call, etc) is not correlated with factuality. 🧵 7/7

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