Search Results for author: Haimin Hu

Found 11 papers, 6 papers with code

Blending Data-Driven Priors in Dynamic Games

no code implementations21 Feb 2024 Justin Lidard, Haimin Hu, Asher Hancock, Zixu Zhang, Albert Gimó Contreras, Vikash Modi, Jonathan DeCastro, Deepak Gopinath, Guy Rosman, Naomi Leonard, María Santos, Jaime Fernández Fisac

As intelligent robots like autonomous vehicles become increasingly deployed in the presence of people, the extent to which these systems should leverage model-based game-theoretic planners versus data-driven policies for safe, interaction-aware motion planning remains an open question.

Autonomous Driving Motion Planning

Who Plays First? Optimizing the Order of Play in Stackelberg Games with Many Robots

no code implementations14 Feb 2024 Haimin Hu, Gabriele Dragotto, Zixu Zhang, Kaiqu Liang, Bartolomeo Stellato, Jaime F. Fisac

To solve the problem, we introduce Branch and Play (B&P), an efficient and exact algorithm that provably converges to a socially optimal order of play and its Stackelberg equilibrium.

Trajectory Planning valid

The Safety Filter: A Unified View of Safety-Critical Control in Autonomous Systems

no code implementations11 Sep 2023 Kai-Chieh Hsu, Haimin Hu, Jaime Fernández Fisac

Recent years have seen significant progress in the realm of robot autonomy, accompanied by the expanding reach of robotic technologies.

Deception Game: Closing the Safety-Learning Loop in Interactive Robot Autonomy

no code implementations3 Sep 2023 Haimin Hu, Zixu Zhang, Kensuke Nakamura, Andrea Bajcsy, Jaime F. Fisac

An outstanding challenge for the widespread deployment of robotic systems like autonomous vehicles is ensuring safe interaction with humans without sacrificing performance.

Autonomous Vehicles Reinforcement Learning (RL)

Emergent Coordination through Game-Induced Nonlinear Opinion Dynamics

1 code implementation5 Apr 2023 Haimin Hu, Kensuke Nakamura, Kai-Chieh Hsu, Naomi Ehrich Leonard, Jaime Fernández Fisac

We present a multi-agent decision-making framework for the emergent coordination of autonomous agents whose intents are initially undecided.

Decision Making

Active Uncertainty Reduction for Safe and Efficient Interaction Planning: A Shielding-Aware Dual Control Approach

1 code implementation1 Feb 2023 Haimin Hu, David Isele, Sangjae Bae, Jaime F. Fisac

To ensure the safe operation of the interacting agents, we use a runtime safety filter (also referred to as a "shielding" scheme), which overrides the robot's dual control policy with a safety fallback strategy when a safety-critical event is imminent.

Autonomous Vehicles Model Predictive Control +1

Active Uncertainty Reduction for Human-Robot Interaction: An Implicit Dual Control Approach

2 code implementations15 Feb 2022 Haimin Hu, Jaime F. Fisac

The ability to accurately predict human behavior is central to the safety and efficiency of robot autonomy in interactive settings.

Model Predictive Control Motion Planning

SHARP: Shielding-Aware Robust Planning for Safe and Efficient Human-Robot Interaction

1 code implementation2 Oct 2021 Haimin Hu, Kensuke Nakamura, Jaime F. Fisac

Leveraging recent work on Bayesian human motion prediction, the resulting robot policy proactively balances nominal performance with the risk of high-cost emergency maneuvers triggered by low-probability human behaviors.

Human motion prediction Motion Planning +1

Learning Hybrid Control Barrier Functions from Data

no code implementations8 Nov 2020 Lars Lindemann, Haimin Hu, Alexander Robey, Hanwen Zhang, Dimos V. Dimarogonas, Stephen Tu, Nikolai Matni

Motivated by the lack of systematic tools to obtain safe control laws for hybrid systems, we propose an optimization-based framework for learning certifiably safe control laws from data.

Reach-SDP: Reachability Analysis of Closed-Loop Systems with Neural Network Controllers via Semidefinite Programming

1 code implementation16 Apr 2020 Haimin Hu, Mahyar Fazlyab, Manfred Morari, George J. Pappas

There has been an increasing interest in using neural networks in closed-loop control systems to improve performance and reduce computational costs for on-line implementation.

Learning Control Barrier Functions from Expert Demonstrations

1 code implementation7 Apr 2020 Alexander Robey, Haimin Hu, Lars Lindemann, Hanwen Zhang, Dimos V. Dimarogonas, Stephen Tu, Nikolai Matni

Furthermore, if the CBF parameterization is convex, then under mild assumptions, so is our learning process.

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