Search Results for author: Keuntaek Lee

Found 10 papers, 0 papers with code

Adaptive Risk Sensitive Model Predictive Control with Stochastic Search

no code implementations2 Sep 2020 Ziyi Wang, Oswin So, Keuntaek Lee, Camilo A. Duarte, Evangelos A. Theodorou

We present a general framework for optimizing the Conditional Value-at-Risk for dynamical systems using stochastic search.

Distributional Reinforcement Learning Optimization and Control Robotics

Sample-based Distributional Policy Gradient

no code implementations8 Jan 2020 Rahul Singh, Keuntaek Lee, Yongxin Chen

It relies on the key idea of replacing the expected return with the return distribution, which captures the intrinsic randomness of the long term rewards.

Distributional Reinforcement Learning OpenAI Gym +2

Deep Forward-Backward SDEs for Min-max Control

no code implementations11 Jun 2019 Ziyi Wang, Keuntaek Lee, Marcus A. Pereira, Ioannis Exarchos, Evangelos A. Theodorou

This paper presents a novel approach to numerically solve stochastic differential games for nonlinear systems.

Perceptual Attention-based Predictive Control

no code implementations26 Apr 2019 Keuntaek Lee, Gabriel Nakajima An, Viacheslav Zakharov, Evangelos A. Theodorou

The proposed information processing architecture is used to support a perceptual attention-based predictive control algorithm that leverages model predictive control (MPC), convolutional neural networks (CNNs), and uncertainty quantification methods.

Model Predictive Control Uncertainty Quantification +1

Propagating Uncertainty through the tanh Function with Application to Reservoir Computing

no code implementations25 Jun 2018 Manan Gandhi, Keuntaek Lee, Yunpeng Pan, Evangelos Theodorou

In this work, we contribute two new methods to propagate uncertainty through the tanh activation function and propose the Probabilistic Echo State Network (PESN), a method that is shown to have better average performance than deterministic Echo State Networks given the random initialization of reservoir states.

Safe end-to-end imitation learning for model predictive control

no code implementations27 Mar 2018 Keuntaek Lee, Kamil Saigol, Evangelos A. Theodorou

We propose the use of Bayesian networks, which provide both a mean value and an uncertainty estimate as output, to enhance the safety of learned control policies under circumstances in which a test-time input differs significantly from the training set.

Autonomous Driving Imitation Learning +1

Imitation Learning for Agile Autonomous Driving

no code implementations21 Sep 2017 Yunpeng Pan, Ching-An Cheng, Kamil Saigol, Keuntaek Lee, Xinyan Yan, Evangelos Theodorou, Byron Boots

We present an end-to-end imitation learning system for agile, off-road autonomous driving using only low-cost on-board sensors.

Robotics

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