Search Results for author: Josh Bongard

Found 17 papers, 11 papers with code

Gradient-based Design of Computational Granular Crystals

no code implementations7 Apr 2024 Atoosa Parsa, Corey S. O'Hern, Rebecca Kramer-Bottiglio, Josh Bongard

There is growing interest in engineering unconventional computing devices that leverage the intrinsic dynamics of physical substrates to perform fast and energy-efficient computations.

Efficient automatic design of robots

no code implementations5 Jun 2023 David Matthews, Andrew Spielberg, Daniela Rus, Sam Kriegman, Josh Bongard

Robots are notoriously difficult to design because of complex interdependencies between their physical structure, sensory and motor layouts, and behavior.

Evolutionary Algorithms

Universal Mechanical Polycomputation in Granular Matter

1 code implementation29 May 2023 Atoosa Parsa, Sven Witthaus, Nidhi Pashine, Corey S. O'Hern, Rebecca Kramer-Bottiglio, Josh Bongard

Mechanical computers, wherein information processing is a material property emerging from the interaction of components with the environment, are one such class of devices.

Selection for short-term empowerment accelerates the evolution of homeostatic neural cellular automata

1 code implementation24 May 2023 Caitlin Grasso, Josh Bongard

Empowerment -- a domain independent, information-theoretic metric -- has previously been shown to assist in the evolutionary search for neural cellular automata (NCA) capable of homeostasis when employed as a fitness function.

Empowered Neural Cellular Automata

1 code implementation27 Apr 2022 Caitlin Grasso, Josh Bongard

Information-theoretic fitness functions are becoming increasingly popular to produce generally useful, task-independent behaviors.

Evolving Programmable Computational Metamaterials

1 code implementation19 Apr 2022 Atoosa Parsa, Dong Wang, Corey S. O'Hern, Mark D. Shattuck, Rebecca Kramer-Bottiglio, Josh Bongard

Granular metamaterials are a promising choice for the realization of mechanical computing devices.

Selecting Continuous Life-Like Cellular Automata for Halting Unpredictability: Evolving for Abiogenesis

1 code implementation15 Apr 2022 Q. Tyrell Davis, Josh Bongard

Substantial efforts have been applied to engineer CA with desired emergent properties, such as supporting gliders.

A good body is all you need: avoiding catastrophic interference via agent architecture search

no code implementations18 Aug 2021 Joshua Powers, Ryan Grindle, Lapo Frati, Josh Bongard

Efforts to combat catastrophic interference to date focus on novel neural architectures or training methods, with a recent emphasis on policies with good initial settings that facilitate training in new environments.

Scale invariant robot behavior with fractals

1 code implementation8 Mar 2021 Sam Kriegman, Amir Mohammadi Nasab, Douglas Blackiston, Hannah Steele, Michael Levin, Rebecca Kramer-Bottiglio, Josh Bongard

Finally, we show that biobots can spontaneously exhibit self similar attachment geometries, thereby suggesting that self similar behavior via self similar structure may be realizable across a wide range of robot platforms in future.

Scalable sim-to-real transfer of soft robot designs

1 code implementation23 Nov 2019 Sam Kriegman, Amir Mohammadi Nasab, Dylan Shah, Hannah Steele, Gabrielle Branin, Michael Levin, Josh Bongard, Rebecca Kramer-Bottiglio

The manual design of soft robots and their controllers is notoriously challenging, but it could be augmented---or, in some cases, entirely replaced---by automated design tools.

Embodiment dictates learnability in neural controllers

no code implementations15 Oct 2019 Joshua Powers, Ryan Grindle, Sam Kriegman, Lapo Frati, Nick Cheney, Josh Bongard

Catastrophic forgetting continues to severely restrict the learnability of controllers suitable for multiple task environments.

Word2vec to behavior: morphology facilitates the grounding of language in machines

1 code implementation3 Aug 2019 David Matthews, Sam Kriegman, Collin Cappelle, Josh Bongard

Enabling machines to respond appropriately to natural language commands could greatly expand the number of people to whom they could be of service.

Word Embeddings

Automated shapeshifting for function recovery in damaged robots

1 code implementation22 May 2019 Sam Kriegman, Stephanie Walker, Dylan Shah, Michael Levin, Rebecca Kramer-Bottiglio, Josh Bongard

We found that, especially in the case of "deep insult", such as removal of all four of the robot's legs, the damaged machine evolves shape changes that not only recover the original level of function (locomotion) as before, but can in fact surpass the original level of performance (speed).

Morphology dictates a robot's ability to ground crowd-proposed language

1 code implementation16 Dec 2017 Zahra Mahoor, Jack Felag, Josh Bongard

In this paper, we define a safe robot as one that receives a natural-language command from humans, considers an action in response to that command, and accurately predicts how humans will judge that action if is executed in reality.

How morphological development can guide evolution

1 code implementation20 Nov 2017 Sam Kriegman, Nick Cheney, Josh Bongard

Here, we report on a previously unknown phenomenon when embodied agents are allowed to develop and evolve: Evolution discovers body plans robust to control changes, these body plans become genetically assimilated, yet controllers for these agents are not assimilated.

Evolving soft locomotion in aquatic and terrestrial environments: effects of material properties and environmental transitions

no code implementations17 Nov 2017 Francesco Corucci, Nick Cheney, Francesco Giorgio-Serchi, Josh Bongard, Cecilia Laschi

Designing soft robots poses considerable challenges: automated design approaches may be particularly appealing in this field, as they promise to optimize complex multi-material machines with very little or no human intervention.

Scalable Co-Optimization of Morphology and Control in Embodied Machines

no code implementations19 Jun 2017 Nick Cheney, Josh Bongard, Vytas SunSpiral, Hod Lipson

In psychology, the theory of embodied cognition posits that behavior arises from a close coupling between body plan and sensorimotor control, which suggests why co-optimizing these two subsystems is so difficult: most evolutionary changes to morphology tend to adversely impact sensorimotor control, leading to an overall decrease in behavioral performance.

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