Alex Lu

@alexijie.bsky.social

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

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?

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.

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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!

Arushi Gupta@arushigupta.bsky.social · last yr.

This work began from a summer internship at ‪@msftresearch.bsky.social‬ New England. Incredibly thankful to mentors @alexijie.bsky.social and Alan Moses, whose deep involvement and guidance made this possible! 📄: www.biorxiv.org/content/10.1... 💻: tinyurl.com/microscopy-c...

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.

@stanhua.bsky.social · last yr.

The release of public datasets is driving innovations in healthcare AI, but are children seeing the benefit? Our systematic dataset review reveals that children account for less than 1% of patients across 181 public medical imaging datasets. #HealthEquity #SafePediatricAI