Sangyu Xu 徐桑榆
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Sangyu Xu
Sangyu Xu
徐桑榆

Computational Behaviour Scientist

🪰Animal Behaviour🐭 Box icon Effect size Estimation 🎨Art🎵

I’m a computational behavior scientist with 15+ years building tools that define what “good” looks like in complex, ambiguous systems.

Recent

  • Apr 2026 LSSmScarlet3 paper posted to bioRxiv.
  • Mar 2026 Octopamine-driven feeding paper posted to bioRxiv.
  • Jan 2026 DABEST 2.0 paper posted to bioRxiv.
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DABEST estimation graphic

Getting Over ANOVA

DABEST2 — a framework that replaces p-values with bootstrap confidence intervals and effect size estimation for multiplex comparisons, following the 2,000+ citations predecessor DABEST. Binary significance testing gives you vibes. Estimation gives you evidence.

→ DABEST demo

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What Is a Hungry Fly?

Tracking thousands of Drosophila across millions of frames to understand how serotonin implements hunger states. Custom hardware, computer vision, 17 behavioural metrics, high-dimensional statistics. The question: how do you know if a manipulation actually changed the state, or just one metric? Coming soon…

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Four Agents, No Ground Truth

A biologist, a bioinformatician, a reviewer, and an editor — all LLMs, arguing about a manuscript. The easy part was building it. The hard part: how do you evaluate whether the arguing made it better? Coming soon…