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Curriculum Design for Teaching via Demonstrations: Theory and Applications

NeurIPS 2021 · Reinforcement learning › Imitation learning · approach: Reward learning from demonstrations · 3 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use the combined teacher- and learner-difficulty ranking (Cur)MaxEnt-IRL and CrossEnt-BC learners in the car-driving environment · Car driving (T0–T7)total expected reward convergenceHelped
Rank demonstrations using teacher difficulty alone (Cur-T), holding learner difficulty constant (ablation)Cur teacher · Car driving (T0–T7)total expected reward convergenceHurt
Rank demonstrations using learner difficulty alone (Cur-L), holding teacher difficulty constant (ablation)Cur teacher · Car driving (T0–T7)total expected reward convergenceHurt
Use random ordering (Agn) instead of the combined difficulty rankingMaxEnt-IRL and CrossEnt-BC learners in the car-driving environment · Car driving (T0–T7)total expected reward convergenceHurt
Use batch set-cover teaching (Scot) instead of interactive curriculum selectionMaxEnt-IRL learner · Car driving (T0–T7)total expected reward convergenceHurt
Use the omniscient teacher (Omn), which selects demonstrations using learner gradientsMaxEnt-IRL learner · Car driving (T0–T7)total expected reward convergenceMixed
Use the blackbox teacher (BBox), which requires the true reward functionMaxEnt-IRL learner · Car driving (T0–T7)total expected reward convergenceNo clear effect
Estimate the learner policy with limited probing rather than observe it fullyCur teacher with MaxEnt-IRL learner · Car driving (T0–T7), limited observabilitytotal expected reward convergenceNo clear effect
Probe every 40 time steps rather than every time step, with unlimited queries per probeCur teacher with MaxEnt-IRL learner · Car driving (T0–T7), limited observabilitytotal expected reward convergenceMixed
Use the combined difficulty ranking rather than uniform task selectionNeural CrossEnt-BC learner · Shortest-path navigationtest-set reward convergenceHelped
Use the combined difficulty ranking rather than uniform task selectionNeural CrossEnt-BC learner · Travelling-salesman navigationtest-set reward convergenceHelped
Use learner difficulty alone (Cur-L), omitting task-specific teacher difficulty (ablation)Neural CrossEnt-BC learner · Shortest-path and travelling-salesman navigationtest-set reward convergenceNo clear effect

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