MLE Can Estimate Density Ratios in MDPs
nanjiang_cs · x · 2026-07-13
A paper recommendation highlighting a new approach to density ratio estimation in MDPs:
- Traditionally, these problems often require a completeness assumption.
- This work uses MLE for density-ratio estimation, bypassing the completeness requirement.
- The key intuition is that in this setting, the Bellman operator and projections fall under the same KL geometry, making the derivation valid.
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