Better Learning from the Past - Counterfactual - Batch RL

Overview

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Explore sequential decision-making under uncertainty in this 41-minute lecture by Emma Brunskill from Stanford University. Delve into the emerging challenges of deep learning, focusing on counterfactual and batch reinforcement learning. Learn about Markov Decision Processes, value functions, and the growing interest in causal inference and machine learning. Examine batch policy optimization with generalization bounds, off-policy policy gradient techniques, and methods to minimize data needed for effective decision-making. Gain insights into linear thresholding policies, advantage decomposition, and doubly robust advantage decomposition in the context of real-world applications like HIV treatment initiation.

Syllabus

Intro
Sequential Decision Making Under Uncertainty
Learning to Make Good Sequences of Decisions Under Uncertainty → 1980s Reinforcement Learning
Background: Markov Decision Process Value Function
Background: Reinforcement Learning
Counterfactual / Batch Off Policy Reinforcement Learning
Need for Generalization
Growing Interest in Causal Inference & ML
Batch / Counterfactual Policy Optimization: Pick Policy w/Best Estimated Expected Sum of Rewards
Quest: Batch Policy Optimization w/ Generalization Bounds
Challenge: Good Error Bound Analysis
Aim: Strong Generalization Guarantees on Policy Performance, Alternative: Guarantee Find Good in Class Policy
Off-Policy Policy Gradient with State Distribution Correction
Aim: Strong Generalization Guarantees on Policy Performance, Alternative: Guarantee Find Best in Class Policy
Example: Linear Thresholding Policies Starting HIV treatment as soon as
Use an Advantage Decomposition
Use a Doubly Robust Advantage Decomposition
Quest for Batch Policy Optimization with Generalization Guarantees
Techniques to Minimize & Understand Data Needed to Learn to Make Good Decisions

Taught by

Simons Institute

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Taught by

ADSI Summer Workshop: Algorithmic Foundations of Learning and Control - Emma Brunskill

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Off-Policy Policy Optimization

Batch Offline Reinforcement Learning - Part 1

Towards Fast Autonomous Learners: Advances in Reinforcement Learning - 2015

Toward Generalizable Embodied AI for Machine Autonomy

Never Stop Learning.