11 citations · 47 across the 26 of their papers we have counts for
5 papers · 1 filter
Action-Sufficient State Representation Learning for Control with Structural Constraints
Biwei Huang, Chaochao Lu, Liu Leqi +4
Perceived signals in real-world scenarios are usually high-dimensional and noisy, and finding and using their representation that contains essential and sufficient information requ…
When Curation Becomes Creation: Algorithms, Microcontent, and the Vanishing Distinction between Platforms and Creators
Liu Leqi, Dylan Hadfield-Menell, Zachary C. Lipton
Ever since social activity on the Internet began migrating from the wilds of the open web to the walled gardens erected by so-called platforms, debates have raged about the respons…
Off-Policy Risk Assessment in Contextual Bandits
Audrey Huang, Liu Leqi, Zachary C. Lipton +1
Even when unable to run experiments, practitioners can evaluate prospective policies, using previously logged data. However, while the bandits literature has adopted a diverse set…
On the Convergence and Optimality of Policy Gradient for Markov Coherent Risk
Audrey Huang, Liu Leqi, Zachary C. Lipton +1
In order to model risk aversion in reinforcement learning, an emerging line of research adapts familiar algorithms to optimize coherent risk functionals, a class that includes cond…
Median Optimal Treatment Regimes
Liu Leqi, Edward H. Kennedy
Optimal treatment regimes are personalized policies for making a treatment decision based on subject characteristics, with the policy chosen to maximize some value. It is common to…