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Alex Lu

@alexijie

Senior Researcher at Microsoft Research New England. ML/AI for biological discovery: microscopy, proteins, single-cell.

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07.11.2023
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Latest posts by Alex Lu @alexijie

Five years ago, we released FLIP. The core question was: can ML models for protein fitness prediction generalize in the ways that actually matter for protein engineering, i.e. low data, extrapolation to more mutations, out-of-distribution sequences?

26.02.2026 21:58 ๐Ÿ‘ 4 ๐Ÿ” 5 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
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We made FLIP2, a protein fitness benchmark spanning seven new datasets, including enzymes, protein-protein interactions, and light-sensitive proteins, as well as splits that measure generalization relevant to real-world protein engineering campaigns.

25.02.2026 21:25 ๐Ÿ‘ 52 ๐Ÿ” 15 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1

Come do a PhD internship with me!

20.11.2025 15:31 ๐Ÿ‘ 0 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Was incredible to work with Arushi during her summer internship - check out her preprint showing that single cell representation learning methods for microscopy can be confounded by cells in the background of their inputs!

05.07.2025 20:52 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Read our preprint that demonstrates a growing bias in medical imaging datasets against pediatrics, and how it impacts downstream AI development!

Props to our first author @stanhua.bsky.social, who among many other feats, filtered hundreds of datasets/papers to establish this trend.

27.06.2025 19:17 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

At NeurIPS and interested in talking about BioML? Catch me at the Microsoft booth in the expo hall between 2:00-2:30p and 3:30-4:30p today!

11.12.2024 17:34 ๐Ÿ‘ 17 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0