MOCHA: Multi-Objective Co-Design using Hypernetwork Architectures

Abstract:In this work, we present MOCHA, the first, to our knowledge, reinforcement learning based approach to computing a family of Pareto-optimal policies across the design space of a robot using a single network. Specifically, MOCHA leverages the hypernetwork architecture to learn a network that produces specialized network parameters optimized for a given objective and parameterized robot design; we term this a multi-objective design hypernetwork (MDH). We demonstrate the capabilities of MDHs to represent a complex family of design-dependent strategies on two distinct robot morphologies, each with six design dimensions and across 2-3 objectives. Moreover, we propose an approach for efficiently producing a Design Pareto set using evolutionary search of the learned policy network, generating the optimal design-policy combination for each objective prioritization. Lastly, we provide an efficient method for computing generalist robot designs which achieve the best cumulative performance across the entire set of objectives.

Robotics (cs.RO)

arXiv:2609.30570 [cs.RO]

(or arXiv:2609.30570v1 [cs.RO] for this version)

https://doi.org/10.48550/arXiv.2609.30570 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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