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Terrain Classification Enhanced with Uncertainty for Space Exploration Robots from Proprioceptive Data

3 Jul 2024arXiv:2407.03241archive 2025-07-28

Mariela De Lucas Álvarez, Jichen Guo, Raul Domínguez, Matias Valdenegro-Toro

Terrain Classification is an essential task in space exploration, where unpredictable environments are difficult to observe using only exteroceptive sensors such as vision. Implementing Neural Network classifiers can have high performance but can be deemed untrustworthy as they lack transparency, which makes them unreliable for taking high-stakes decisions during mission planning. We address this by proposing Neural Networks with Uncertainty Quantification in Terrain Classification. We enable our Neural Networks with Monte Carlo Dropout, DropConnect, and Flipout in time series-capable architectures using only proprioceptive data as input. We use Bayesian Optimization with Hyperband for efficient hyperparameter optimization to find optimal models for trustworthy terrain classification.

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