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Exploration by Maximizing Renyi Entropy for Reward-Free RL Framework
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Measured effects reported in the paper
| What was changed | Where | Measured | Effect |
|---|---|---|---|
| maximize state-action Rnyi entropy instead of state entropy with an entropy bonus (ablation) | MaxRenyi · MultiRooms | lowest normalized cumulative reward: State + bonus: 0.14, 0.48, 0.78, 0.87; MaxRenyi: 0.14, 0.52, 0.87, 0.91 | Helped |
| add an entropy bonus to state-entropy exploration (ablation) | State · MultiRooms | lowest normalized cumulative reward: State: 0.07, 0.15, 0.41, 0.57; State + bonus: 0.14, 0.48, 0.78, 0.87 | Helped |
| use PPO with a value function instead of vanilla policy gradient (ablation) | MaxRenyi · MultiRooms exploration | number of unique state-action pairs visited | Helped |
| use alpha=0.5 rather than alpha=1 (ablation) | MaxRenyi · MultiRooms exploration | number of unique state-action pairs visited | Helped |
| use alpha=0 rather than alpha=0.5 (ablation) | MaxRenyi · MultiRooms exploration | number of unique state-action pairs visited | Hurt |
| use MaxRenyi exploration rather than RND, ICM, or MaxEnt | reward-free RL · MultiRooms (planning phase) | sample count needed for normalized cumulative reward larger than 0.8: 8k samples; 16k samples | Helped |
| use MaxRenyi exploration rather than RND | reward-free RL · Gravitar | planned policy score: 1,850 vs 1,890 | Hurt |
| use MaxRenyi exploration rather than RND | reward-free RL · Atari and Mujoco planning tasks | planned policy score: Montezuma 8,100 vs 4,740; Venture 900 vs 840; Gravitar 1,850 vs 1,890; PrivateEye 6,820 vs 3,040; Solaris 2,192 vs 1,416 | Mixed |
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