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Contextual Bandits and Imitation Learning with Preference-Based Active Queries

NeurIPS 2023 · Bandits and online learning › Contextual bandits and Thompson sampling · approach: Oracle-efficient contextual bandits · 1 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use active preference queries, skipping queries when the version space agrees on the optimal actionAURORA · Contextual dueling banditsqueries: from querying every round to \widetilde{O}\left(\min\left\{T,\; \frac{A^3\beta^3\dim^2_E(\+F,\Delta)}{\Delta^2}\right\}\Helped
Use preference comparisons to learn the policy without expert action labels or reward signalsAURORAE · Imitation learningregretHelped
Stack one AURORA instance per time step and use preference-based feedbackAURORAE · Imitation learningqueries: AURORA query bound multiplied by HHelped

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