ML Applications
Learning State-Dependent Losses for Inverse Dynamics Learning
November 1, 2020
Abstract
Being able to quickly adapt to changes in dynamics is paramount in model-based control for object manipulation tasks. In order to influence fast adaptation of the inverse dynamics model’s parameters, data efficiency is crucial. Given observed data, a key element to how an optimizer updates model parameters is the loss function. In this work, we propose to apply meta-learning to learn structured, state dependent loss functions during a meta-training phase. We then replace standard losses with our learned losses during online adaptation tasks. We evaluate our proposed approach on inverse dynamics learning tasks, both in simulation and on real hardware data. In both settings, the structured and state dependent learned losses improve online adaptation speed, when compared to standard, state-independent loss functions.
AUTHORS
Research Topics
Robotics
Machine Learning
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