Search Results for author: Bryon Tjanaka

Found 9 papers, 6 papers with code

Training Diverse High-Dimensional Controllers by Scaling Covariance Matrix Adaptation MAP-Annealing

1 code implementation6 Oct 2022 Bryon Tjanaka, Matthew C. Fontaine, David H. Lee, Aniruddha Kalkar, Stefanos Nikolaidis

Pre-training a diverse set of neural network controllers in simulation has enabled robots to adapt online to damage in robot locomotion tasks.

pyribs: A Bare-Bones Python Library for Quality Diversity Optimization

1 code implementation1 Mar 2023 Bryon Tjanaka, Matthew C. Fontaine, David H. Lee, Yulun Zhang, Nivedit Reddy Balam, Nathaniel Dennler, Sujay S. Garlanka, Nikitas Dimitri Klapsis, Stefanos Nikolaidis

Recent years have seen a rise in the popularity of quality diversity (QD) optimization, a branch of optimization that seeks to find a collection of diverse, high-performing solutions to a given problem.

Approximating Gradients for Differentiable Quality Diversity in Reinforcement Learning

1 code implementation8 Feb 2022 Bryon Tjanaka, Matthew C. Fontaine, Julian Togelius, Stefanos Nikolaidis

Training can then be viewed as a quality diversity (QD) optimization problem, where we search for a collection of performant policies that are diverse with respect to quantified behavior.

reinforcement-learning Reinforcement Learning (RL)

On the Importance of Environments in Human-Robot Coordination

1 code implementation21 Jun 2021 Matthew C. Fontaine, Ya-Chuan Hsu, Yulun Zhang, Bryon Tjanaka, Stefanos Nikolaidis

When studying robots collaborating with humans, much of the focus has been on robot policies that coordinate fluently with human teammates in collaborative tasks.

Surrogate Assisted Generation of Human-Robot Interaction Scenarios

1 code implementation26 Apr 2023 Varun Bhatt, Heramb Nemlekar, Matthew C. Fontaine, Bryon Tjanaka, Hejia Zhang, Ya-Chuan Hsu, Stefanos Nikolaidis

In the shared control teleoperation domain and a more complex shared workspace collaboration task, we show that surrogate assisted scenario generation efficiently synthesizes diverse datasets of challenging scenarios.

Deep Surrogate Assisted Generation of Environments

no code implementations9 Jun 2022 Varun Bhatt, Bryon Tjanaka, Matthew C. Fontaine, Stefanos Nikolaidis

Results in two benchmark domains show that DSAGE significantly outperforms existing QD environment generation algorithms in discovering collections of environments that elicit diverse behaviors of a state-of-the-art RL agent and a planning agent.

Reinforcement Learning (RL)

Proximal Policy Gradient Arborescence for Quality Diversity Reinforcement Learning

no code implementations23 May 2023 Sumeet Batra, Bryon Tjanaka, Matthew C. Fontaine, Aleksei Petrenko, Stefanos Nikolaidis, Gaurav Sukhatme

Training generally capable agents that thoroughly explore their environment and learn new and diverse skills is a long-term goal of robot learning.

reinforcement-learning Reinforcement Learning (RL)

Density Descent for Diversity Optimization

no code implementations18 Dec 2023 David H. Lee, Anishalakshmi V. Palaparthi, Matthew C. Fontaine, Bryon Tjanaka, Stefanos Nikolaidis

We propose Density Descent Search (DDS), an algorithm that explores the feature space via gradient descent on a continuous density estimate of the feature space that also provides stronger stability guarantee.

Density Estimation

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