Search Results for author: Zachary Sunberg

Found 7 papers, 4 papers with code

Leveraging Counterfactual Paths for Contrastive Explanations of POMDP Policies

no code implementations28 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.

counterfactual Explainable artificial intelligence +1

Intention-Aware Navigation in Crowds with Extended-Space POMDP Planning

1 code implementation20 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.

Autonomous Navigation Motion Planning

Navigation between initial and desired community states using shortcuts

2 code implementations15 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.

Management

Bayesian Optimized Monte Carlo Planning

1 code implementation7 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.

Bayesian Optimization

Improving Automated Driving through POMDP Planning with Human Internal States

no code implementations28 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.

Online algorithms for POMDPs with continuous state, action, and observation spaces

4 code implementations18 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.

The Value of Inferring the Internal State of Traffic Participants for Autonomous Freeway Driving

no code implementations2 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.

Autonomous Vehicles

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