Ensemble learning model on Artificial Neural Network - Backpropagation (ANN-BP) architecture for coal pillar stability classificationGabriella Aileen Mendrofa, Bevina Desjwiandra Handari and Gatot Fatwanto HertonoITM Web Conf., 61 (2024) 01008DOI: https://doi.org/10.1051/itmconf/20246101008