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Gilwoo Lee

6 accepted papers

2021

Bayesian Residual Policy Optimization: : Scalable Bayesian Reinforcement Learning with Clairvoyant Experts

IROS 2021poster

Informed and robust decision making in the face of uncertainty is critical for robots operating in unstructured environments. We formulate this as Bayesian Reinforcement Learning over latent Markov Decision Processes (MDPs). While Bayes-optimality is theoretically the gold standard, existing algorit…

Cited by 9SourceScholar
2020

Posterior Sampling for Anytime Motion Planning on Graphs with Expensive-to-Evaluate Edges

ICRA 2020poster

Collision checking is a computational bottleneck in motion planning, requiring lazy algorithms that explicitly reason about when to perform this computation. Optimism in the face of collision uncertainty minimizes the number of checks before finding the shortest path. However, this may take a prohib…

Cited by 15SourceScholar
2019

Bayesian Policy Optimization for Model Uncertainty

ICLR 2019poster

Addressing uncertainty is critical for autonomous systems to robustly adapt to the real world. We formulate the problem of model uncertainty as a continuous Bayes-Adaptive Markov Decision Process (BAMDP), where an agent maintains a posterior distribution over latent model parameters given a history…

Cited by 59SourcePDFScholar
2019

Talking With Hands 16.2M: A Large-Scale Dataset of Synchronized Body-Finger Motion and Audio for Conversational Motion Analysis and Synthesis

ICCV 2019poster

We present a 16.2-million frame (50-hour) multimodal dataset of two-person face-to-face spontaneous conversations. Our dataset features synchronized body and finger motion as well as audio data. To the best of our knowledge, it represents the largest motion capture and audio dataset of natural conve…

Cited by 118PDFScholar
2019

Towards Robotic Feeding: Role of Haptics in Fork-Based Food Manipulation

RA-L 2019

Autonomous feeding is challenging because it requires the manipulation of food items with various compliance, sizes, and shapes. To understand how humans manipulate food items during feeding and to explore ways to adapt their strategies to robots, we collected a rich dataset of human trajectories by

Cited by 81SourceScholar
2015

Hierarchical planning for multi-contact non-prehensile manipulation

IROS 2015poster

Manipulation planning involves planning the combined motion of objects in the environment as well as the robot motions to achieve them. In this paper, we explore a hierarchical approach to planning sequences of non-prehensile and prehensile actions. We subdivide the planning problem into three stage…

Cited by 64SourceScholar