Alex Ratner is Co-founder and CEO at Snorkel AI, a technology startup that empowers data scientists and developers to turn data into accurate and adaptable AI applications fast.

As a professor at the University of Washington, Ratner focuses on systems and techniques for making machine learning more practical for use in real-world settings ranging from medicine to industry. Ratner's work focuses especially on data management and weak supervision techniques for training machine learning models in settings where large expert-labeled "training datasets" are not available or practical to create.

While pursuing his Ph.D. at Stanford, Ratner led the development of Snorkel, an open source library for programmatic training data labeling, enabling deployment of large-scale AI applications in hours or days rather than months or years. After deployment at companies like Google, Apple, and Intel, academic labs and government agencies, Ratner co-founded Snorkel AI, which supports a commercial platform version of Snorkel.

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