Information Retrieval: Click Models, Relevance, and Learning to Rank

Analyze relevance models, behavioral click signals, online pairwise ranking, and web-scale learning-to-rank systems.

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Course overview

This advanced sequence moves from linguistic relevance modeling and click-based interaction signals to online pairwise learning and deep ranking architectures used in web-scale systems. Learners distinguish relevance judgments from observed clicks, examine feedback and exposure bias, and connect ranking objectives to operational evaluation. The focus is search scoring and ranking methodology—not retrieval-augmented generation. The English-audio recordings are accompanied by original analytical notes and assignments, not copied transcripts.

Distinguish a document relevance model from behavioral evidence such as a click, and identify assumptions needed to infer relevance from user interactions. Formulate an online pairwise ranking problem and explain how feedback, exposure, and changing item distributions affect its training data. Design a leakage-aware, reproducible comparison of ranking systems using offline ranking metrics and carefully bounded online evaluation.

Prior study of machine learning, information retrieval, and supervised ranking is recommended. Familiarity with ranking metrics, probability, feature representations, and train/validation/test protocols will help; no specific search platform is required.

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Lesson 1 is free

4 lessons · Advanced · Full course.

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