Di Jin is a Co-Founder and PhD-trained AI researcher with nine years of experience and a decade-long focus on NLP, having authored 60+ papers with 5k+ citations. He has led model alignment and post-training efforts for LLMs at Meta and Amazon, inventing practical methods for aligning large models to human preferences (e.g., reward-based data augmentation and constitutional critique). At Eigen AI he now applies that expertise to make enterprise AI leaner through post-training, compression, and optimization. His contributions to open-source NLP tooling include adding a Particle Swarm Optimization adversarial search to the widely used TextAttack framework, reflecting a blend of theoretical rigor and production engineering. Based in California, he combines top-tier academic training from MIT and Tsinghua with hands-on impact across research, product, and open-source communities.
9 years of coding experience
10 years of employment as a software developer
Doctor of Philosophy - PhD Computer Science, Doctor of Philosophy - PhD Computer Science at Massachusetts Institute of Technology
Bachelor's degree Precision Instruments, Bachelor's degree Precision Instruments at Tsinghua University
TextAttack 🐙 is a Python framework for adversarial attacks, data augmentation, and model training in NLP https://textattack.readthedocs.io/en/master/
Role in this project:
ML Engineer
Contributions:18 commits, 2 PRs, 11 pushes in 6 days
Contributions summary:Di implemented a Particle Swarm Optimization (PSO) algorithm for adversarial attacks, integrating it as a new search method within the TextAttack framework. They added a PSO model, including a class and associated functions for the algorithm. The user's changes involved modifications to the core search method logic and integration with other components of the TextAttack library. The user also updated the HowNet transformation to include an assert statement, ensuring that the number of words are identical before running.
Contributions:6 commits, 2 PRs, 7 pushes in 2 years 2 months
python
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