Sarah Dean

Cornell University

Papers on Lattice

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Publication activitypapers/week, last 8 weeks

Research focus

Recommendation & Information Retrieval (1)RLHF & Preference Learning (1)Training Efficiency & Optimization (1)

Frequent co-authors

Haruka Kiyohara (1)Mihaela Curmei (1)Ariel Evnine (1)Shankar Kalyanaraman (1)

Papers (1)

May 25, 2026

May 25, 2026·also Central Applied Science

Credit-assigned Policy Gradient for Early Stage Retrieval in Two-stage Ranking

Training early-stage rankers in retrieval systems doesn't have to be a high-variance nightmare: CA-PG offers a stable, faster-converging alternative to vanilla policy gradients.

Haruka Kiyohara, Mihaela Curmei, Ariel Evnine +7

Recommendation & Information Retrieval RLHF & Preference Learning Training Efficiency & Optimization

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Sarah Dean

Publication activitypapers/week, last 8 weeks

Research focus

Frequent co-authors

Papers (1)