1 code implementation • 7 Jul 2022 • Rebecca Roelofs, Liting Sun, Ben Caine, Khaled S. Refaat, Ben Sapp, Scott Ettinger, Wei Chai
Finally, we release the causal agent labels (at https://github. com/google-research/causal-agents) as an additional attribute to WOMD and the robustness benchmarks to aid the community in building more reliable and safe deep-learning models for motion forecasting.
no code implementations • 10 Feb 2022 • Letian Wang, Yeping Hu, Liting Sun, Wei Zhan, Masayoshi Tomizuka, Changliu Liu
By mimicking humans' cognition model and semantic understanding during driving, we propose HATN, a hierarchical framework to generate high-quality, transferable, and adaptable predictions for driving behaviors in multi-agent dense-traffic environments.
no code implementations • 14 Aug 2021 • Zhenggang Tang, Kai Yan, Liting Sun, Wei Zhan, Changliu Liu
To efficiently simulate with massive amounts of agents in MPS, we propose Scalable Million-Agent DQN (SMADQN).
no code implementations • 9 Mar 2021 • Liting Sun, Xiaogang Jia, Anca D. Dragan
High capacity end-to-end approaches for human motion (behavior) prediction have the ability to represent subtle nuances in human behavior, but struggle with robustness to out of distribution inputs and tail events.
no code implementations • 7 Mar 2021 • Ran Tian, Masayoshi Tomizuka, Liting Sun
In this work, we advocate that humans are bounded rational and have different intelligence levels when reasoning about others' decision-making process, and such an inherent and latent characteristic should be accounted for in reward learning algorithms.
no code implementations • 1 Mar 2021 • Zhao-Heng Yin, Lingfeng Sun, Liting Sun, Masayoshi Tomizuka, Wei Zhan
Experiments show that our model can generate diverse interactions in various scenarios.
no code implementations • 17 Jan 2021 • Jinning Li, Liting Sun, Jianyu Chen, Masayoshi Tomizuka, Wei Zhan
To address this challenge, we propose a hierarchical behavior planning framework with a set of low-level safe controllers and a high-level reinforcement learning algorithm (H-CtRL) as a coordinator for the low-level controllers.
no code implementations • 4 Nov 2020 • Xiaosong Jia, Liting Sun, Masayoshi Tomizuka, Wei Zhan
We find three interpretable patterns of interactions, bringing insights for driver behavior representation, modeling and comprehension.
no code implementations • 28 Oct 2020 • Letian Wang, Liting Sun, Masayoshi Tomizuka, Wei Zhan
It allows the AVs to infer the characteristics of other road users online and generate behaviors optimizing not only their own rewards, but also their courtesy to others, and their confidence regarding the prediction uncertainties.
no code implementations • 3 Sep 2020 • Ran Tian, Liting Sun, Masayoshi Tomizuka
Classical game-theoretic approaches for multi-agent systems in both the forward policy design problem and the inverse reward learning problem often make strong rationality assumptions: agents perfectly maximize expected utilities under uncertainties.
no code implementations • 20 Aug 2020 • Liting Sun, Zheng Wu, Hengbo Ma, Masayoshi Tomizuka
In human-robot interaction (HRI) systems, such as autonomous vehicles, understanding and representing human behavior are important.
no code implementations • 22 Jun 2020 • Zheng Wu, Liting Sun, Wei Zhan, Chenyu Yang, Masayoshi Tomizuka
Different from existing IRL algorithms, by introducing an efficient continuous-domain trajectory sampler, the proposed algorithm can directly learn the reward functions in the continuous domain while considering the uncertainties in demonstrated trajectories from human drivers.
no code implementations • 30 Sep 2019 • Wei Zhan, Liting Sun, Di Wang, Haojie Shi, Aubrey Clausse, Maximilian Naumann, Julius Kummerle, Hendrik Konigshof, Christoph Stiller, Arnaud de La Fortelle, Masayoshi Tomizuka
3) The driving behavior is highly interactive and complex with adversarial and cooperative motions of various traffic participants.
no code implementations • 23 Jul 2019 • Yeping Hu, Liting Sun, Masayoshi Tomizuka
Both rational and irrational behaviors exist, and the autonomous vehicles need to be aware of this in their prediction module.
no code implementations • 19 Jul 2019 • Liting Sun, Wei Zhan, Yeping Hu, Masayoshi Tomizuka
Hence, the goal of this work is to formulate the human drivers' behavior generation model with CPT so that some ``irrational'' behavior or decisions of human can be better captured and predicted.
no code implementations • 2 May 2019 • Liting Sun, Wei Zhan, Ching-Yao Chan, Masayoshi Tomizuka
The uncertainties can come either from sensor limitations such as occlusions and limited sensor range, or from probabilistic prediction of other road participants, or from unknown social behavior in a new area.
no code implementations • 22 Mar 2019 • Yeping Hu, Wei Zhan, Liting Sun, Masayoshi Tomizuka
The proposed method is based on a generative model and is capable of jointly predicting sequential motions of each pair of interacting agents.
no code implementations • 10 Sep 2018 • Wei Zhan, Liting Sun, Yeping Hu, Jiachen Li, Masayoshi Tomizuka
Modified methods based on PGM, NN and IRL are provided to generate probabilistic reaction predictions in an exemplar scenario of nudging from a highway ramp.
no code implementations • 9 Sep 2018 • Liting Sun, Wei Zhan, Masayoshi Tomizuka
To safely and efficiently interact with other road participants, AVs have to accurately predict the behavior of surrounding vehicles and plan accordingly.
no code implementations • 8 Aug 2018 • Liting Sun, Wei Zhan, Masayoshi Tomizuka, Anca D. Dragan
Such a courtesy term enables the robot car to be aware of possible irrationality of the human behavior, and plan accordingly.
no code implementations • 9 Jul 2017 • Liting Sun, Cheng Peng, Wei Zhan, Masayoshi Tomizuka
For safe and efficient planning and control in autonomous driving, we need a driving policy which can achieve desirable driving quality in long-term horizon with guaranteed safety and feasibility.