no code implementations • 28 Mar 2024 • Benjamin Kraske, Zakariya Laouar, Zachary Sunberg
As humans come to rely on autonomous systems more, ensuring the transparency of such systems is important to their continued adoption.
1 code implementation • 20 Jun 2022 • Himanshu Gupta, Bradley Hayes, Zachary Sunberg
This paper presents a hybrid online Partially Observable Markov Decision Process (POMDP) planning system that addresses the problem of autonomous navigation in the presence of multi-modal uncertainty introduced by other agents in the environment.
2 code implementations • 15 Apr 2022 • Benjamin W. Blonder, Michael H. Lim, Zachary Sunberg, Claire Tomlin
Using several empirical datasets, we show that (1) non-brute-force navigation is only possible between some state pairs, (2) shortcuts exist between many state pairs; and (3) changes in abundance and richness are the strongest predictors of shortcut existence, independent of dataset and algorithm choices.
1 code implementation • 7 Oct 2020 • John Mern, Anil Yildiz, Zachary Sunberg, Tapan Mukerji, Mykel J. Kochenderfer
Monte Carlo tree search with progressive widening attempts to improve scaling by sampling from the action space to construct a policy search tree.
no code implementations • 28 May 2020 • Zachary Sunberg, Mykel Kochenderfer
This work examines the hypothesis that partially observable Markov decision process (POMDP) planning with human driver internal states can significantly improve both safety and efficiency in autonomous freeway driving.
4 code implementations • 18 Sep 2017 • Zachary Sunberg, Mykel Kochenderfer
Online solvers for partially observable Markov decision processes have been applied to problems with large discrete state spaces, but continuous state, action, and observation spaces remain a challenge.
no code implementations • 2 Feb 2017 • Zachary Sunberg, Christopher Ho, Mykel Kochenderfer
This research uses a simple model for human behavior with unknown parameters that make up the internal states of the traffic participants and presents a method for quantifying the value of estimating these states and planning with their uncertainty explicitly modeled.