Search Results for author: Raymond Leung

Found 3 papers, 0 papers with code

Unsupervised ore/waste classification on open-cut mine faces using close-range hyperspectral data

no code implementations9 Feb 2023 Lloyd Windrim, Arman Melkumyan, Richard J. Murphy, Anna Chlingaryan, Raymond Leung

The proposed pipeline brings together unsupervised and self-supervised algorithms in a unified system to map minerals on a mine face without the need for human-annotated training data.

Empirical observations on the effects of data transformation in machine learning classification of geological domains

no code implementations4 Jun 2021 Raymond Leung

The performance of pairwise log-ratio (PWLR) transformation is better than ILR for ensemble and tree-based learners such as boosting and RF; but worse for MLP, SVM and other classifiers.

BIG-bench Machine Learning

Surface Warping Incorporating Machine Learning Assisted Domain Likelihood Estimation: A New Paradigm in Mine Geology Modelling and Automation

no code implementations15 Feb 2021 Raymond Leung, Mehala Balamurali, Alexander Lowe

Once ML likelihood estimators are integrated in the surface warping framework, surface shaping performance is evaluated using unseen data by examining the categorical distribution of test samples located above and below the warped surface.

BIG-bench Machine Learning

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