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YouTube

Adaptive Data Collection via Autoregressive Generation in News Recommendation Systems

Simons Institute via YouTube

Overview

Watch a 45-minute lecture from Columbia University professor Hongseok Namkoong at the Simons Institute exploring a novel framework for adaptive data collection algorithms using historical data. Learn how to leverage autoregressive models for predicting sequential feedback in real-world decision-making scenarios, with a focus on cold-start recommendation problems. Discover how the framework implements Thompson sampling with a learned prior by pretraining models to make accurate predictions based on action features and reward patterns. Understand the theoretical foundations showing how pretraining loss controls online decision-making performance, illustrated through a practical news recommendation system that incorporates fine-tuned language models processing article headlines. Explore solutions for handling uncertainty and active information gathering in changing environments where data availability is limited.

Syllabus

Adaptive Data Collection via Autoregressive Generation

Taught by

Simons Institute

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