Integrating Lagrangian Neural Networks into the Dyna Framework for Reinforcement Learning

• URL: http://arxiv.org/abs/2603.08468v1
• Date: Mon, 09 Mar 2026 15:06:10 GMT
• Title: Integrating Lagrangian Neural Networks into the Dyna Framework for Reinforcement Learning
• Abstract summary: Model-based reinforcement learning (MBRL) is sample-efficient but depends on the accuracy of the learned dynamics.<n>We employ Lagrangian neural networks (LNNs) to train the model within a Dyna-based DynaL framework.
• Score: 8.247175971954727
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Model-based reinforcement learning (MBRL) is sample-efficient but depends on the accuracy of the learned dynamics, which are often modeled using black-box methods that do not adhere to physical laws. Those methods tend to produce inaccurate predictions when presented with data that differ from the original training set. In this work, we employ Lagrangian neural networks (LNNs), which enforce an underlying Lagrangian structure to train the model within a Dyna-based MBRL framework. Furthermore, we train the LNN using stochastic gradient-based and state-estimation-based optimizers to learn the network's weights. The state-estimation-based method converges faster than the stochastic gradient-based method during neural network training. Simulation results are provided to illustrate the effectiveness of the proposed LNN-based Dyna framework for MBRL.

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