Dataset Information

Supervised learning through physical changes in a mechanical system.

ABSTRACT: Mechanical metamaterials are usually designed to show desired responses to prescribed forces. In some applications, the desired force-response relationship is hard to specify exactly, but examples of forces and desired responses are easily available. Here, we propose a framework for supervised learning in thin, creased sheets that learn the desired force-response behavior by physically experiencing training examples and then, crucially, respond correctly (generalize) to previously unseen test forces. During training, we fold the sheet using training forces, prompting local crease stiffnesses to change in proportion to their experienced strain. We find that this learning process reshapes nonlinearities inherent in folding a sheet so as to show the correct response for previously unseen test forces. We show the relationship between training error, test error, and sheet size (model complexity) in learning sheets and compare them to counterparts in machine-learning algorithms. Our framework shows how the rugged energy landscape of disordered mechanical materials can be sculpted to show desired force-response behaviors by a local physical learning process.

SUBMITTER: Stern M

PROVIDER: S-EPMC7334525 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Supervised learning through physical changes in a mechanical system.

Stern Menachem M Arinze Chukwunonso C Perez Leron L Palmer Stephanie E SE Murugan Arvind A

Proceedings of the National Academy of Sciences of the United States of America 20200616 26

Mechanical metamaterials are usually designed to show desired responses to prescribed forces. In some applications, the desired force-response relationship is hard to specify exactly, but examples of forces and desired responses are easily available. Here, we propose a framework for supervised learning in thin, creased sheets that learn the desired force-response behavior by physically experiencing training examples and then, crucially, respond correctly (generalize) to previously unseen test fo ...[more]

PMID: 32546522

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Dataset Information

Supervised learning through physical changes in a mechanical system.

Publications

Supervised learning through physical changes in a mechanical system.

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