Search Results for author: David Howard

Found 16 papers, 2 papers with code

Fin-QD: A Computational Design Framework for Soft Grippers: Integrating MAP-Elites and High-fidelity FEM

no code implementations21 Nov 2023 Yue Xie, Xing Wang, Fumiya Iida, David Howard

This work first discusses a significantly large design space (28 design parameters) for a finger-based soft gripper, including the rarely-explored design space of finger arrangement that is converted to various configurations to arrange individual soft fingers.

Assessing Evolutionary Terrain Generation Methods for Curriculum Reinforcement Learning

no code implementations29 Mar 2022 David Howard, Josh Kannemeyer, Davide Dolcetti, Humphrey Munn, Nicole Robinson

To allow direct comparison between both direct and indirect representations, we assess the impact of a range of representation-agnostic MAP-Elites feature descriptors that compute metrics directly from the generated terrain meshes.

reinforcement-learning Reinforcement Learning (RL)

Semi-supervised Gated Recurrent Neural Networks for Robotic Terrain Classification

1 code implementation24 Nov 2020 Ahmadreza Ahmadi, Tønnes Nygaard, Navinda Kottege, David Howard, Nicolas Hudson

Legged robots are popular candidates for missions in challenging terrains due to the wide variety of locomotion strategies they can employ.

Classification General Classification

Diversity-based Design Assist for Large Legged Robots

no code implementations17 Apr 2020 David Howard, Thomas Lowe, Wade Geles

We combine MAP-Elites and highly parallelisable simulation to explore the design space of a class of large legged robots, which stand at around 2m tall and whose design and construction is not well-studied.

Environmental Adaptation of Robot Morphology and Control through Real-world Evolution

no code implementations30 Mar 2020 Tønnes F. Nygaard, Charles P. Martin, David Howard, Jim Torresen, Kyrre Glette

We find that the evolutionary search finds high-performing and diverse morphology-controller configurations by adapting both control and body to the different properties of the physical environments.

Towards Crossing the Reality Gap with Evolved Plastic Neurocontrollers

no code implementations23 Feb 2020 Huanneng Qiu, Matthew Garratt, David Howard, Sreenatha Anavatti

A critical issue in evolutionary robotics is the transfer of controllers learned in simulation to reality.

Parameter Optimization and Learning in a Spiking Neural Network for UAV Obstacle Avoidance targeting Neuromorphic Processors

no code implementations17 Oct 2019 Llewyn Salt, David Howard, Giacomo Indiveri, Yulia Sandamirskaya

The Lobula Giant Movement Detector (LGMD) is an identified neuron of the locust that detects looming objects and triggers the insect's escape responses.

Bayesian Optimisation

Evolving Spiking Neural Networks for Nonlinear Control Problems

no code implementations4 Mar 2019 Huanneng Qiu, Matthew Garratt, David Howard, Sreenatha Anavatti

Spiking Neural Networks are powerful computational modelling tools that have attracted much interest because of the bioinspired modelling of synaptic interactions between neurons.

Evolving embodied intelligence from materials to machines

no code implementations17 Jan 2019 David Howard, Agoston E. Eiben, Danielle Frances Kennedy, Jean-Baptiste Mouret, Philip Valencia, Dave Winkler

Natural lifeforms specialise to their environmental niches across many levels; from low-level features such as DNA and proteins, through to higher-level artefacts including eyes, limbs, and overarching body plans.

Quantifying the Reality Gap in Robotic Manipulation Tasks

no code implementations5 Nov 2018 Jack Collins, David Howard, Jürgen Leitner

We quantify the accuracy of various simulators compared to a real world robotic reaching and interaction task.

Robotics

Towards the Targeted Environment-Specific Evolution of Robot Components

no code implementations11 Oct 2018 Jack Collins, Wade Geles, David Howard, Frederic Maire

This research considers the task of evolving the physical structure of a robot to enhance its performance in various environments, which is a significant problem in the field of Evolutionary Robotics.

Differential Evolution and Bayesian Optimisation for Hyper-Parameter Selection in Mixed-Signal Neuromorphic Circuits Applied to UAV Obstacle Avoidance

no code implementations17 Apr 2017 Llewyn Salt, David Howard, Giacomo Indiveri, Yulia Sandamirskaya

We also investigate the use of Self-Adaptive Differential Evolution (SADE) which has been shown to ameliorate the difficulties of finding appropriate input parameters for DE.

Bayesian Optimisation

Evolving Unipolar Memristor Spiking Neural Networks

no code implementations1 Sep 2015 David Howard, Larry Bull, Ben De Lacy Costello

Neuromorphic computing --- brainlike computing in hardware --- typically requires myriad CMOS spiking neurons interconnected by a dense mesh of nanoscale plastic synapses.

A Cognitive Architecture Based on a Learning Classifier System with Spiking Classifiers

no code implementations31 Aug 2015 David Howard, Larry Bull, Pier-Luca Lanzi

Learning Classifier Systems (LCS) are population-based reinforcement learners that were originally designed to model various cognitive phenomena.

reinforcement-learning Reinforcement Learning (RL)

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