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Applying data and machine learning to scale education

Talkat Strata + Hadoop World 2017 · 2017-03-13..03-16· [machine-learning]
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Coursera applies large-scale data and ML to make course recommendations for 24 million registered users, tackling cold-start with IP-derived country, referrer and other implicit features plus an expanded onboarding questionnaire about career goals. Courses (≈2,000) are first grouped into 100 clusters via a course co-enrollment embedding, then a two-layer classifier—decision trees at each level—selects specific courses. This pipeline raises relevance and yields a higher click-through rate compared with the previous system.

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