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Goal-Conditioned Reinforcement Learning with Imagined Subgoals

ICML 2021 · Reinforcement learning › Visual and representation RL · approach: Graph search and compositional goals · 24 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use imagined subgoals to define a prior policy and KL-regularize policy improvementRIS · Ant navigation mazessuccess rateHelped
Use imagined subgoals to define a prior policy and KL-regularize policy improvementRIS · Vision-based robotic manipulationsuccess rateHelped
Use imagined subgoals during training, then use a flat policy without test-time subgoal planningRIS · S-shaped and ω-shaped ant mazessuccess rateHelped
Replace the imagined-subgoal prior with a uniform action prior (ablation)RIS · Ant U-mazesuccess rateHurt
Replace the imagined-subgoal prior with an exponential-moving-average policy prior (ablation)RIS · Ant U-mazesuccess rateHurt
Remove implicit regularization that keeps predicted subgoals near the valid state distribution (ablation)RIS high-level policy · Ant U-mazesuccess rateHurt
Use oracle subgoals instead of subgoals predicted by the learned high-level policy (ablation)RIS · Ant U-mazelearning speedHelped
Train TDM with a long policy horizon and dense distance-to-goal rewardsTDM · Ant navigation mazeslearningHurt
Plan and sequentially reach subgoals at inference instead of using them only to guide trainingLEAP · Ant navigation mazessample efficiencyHurt
Increase task horizonSAC and LEAP · S-shaped and ω-shaped ant mazessuccess rateHurt

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