Neural Networks for High-Dimensional Tabular Biomedical Datasets

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• Andrei Margeloiu (University of Cambridge)
• Tuesday 21 February 2023, 13:00-14:00
• Lecture Theatre 2.

If you have a question about this talk, please contact Mateja Jamnik.

Modern machine learning algorithms frequently overfit on small-sample size and high-dimensional tabular datasets, which are common in medicine, bioinformatics and drug discovery. How can we reduce the overfitting on tabular datasets with D>>N?

This talk presents two neural methods for learning from small-sample size and high-dimensional tabular datasets. First, we present WPFS , a parameter-efficient neural architecture that performs global feature selection during training. Second, we present GCondNet, a general approach which combines Graph Neural Networks (GNNs) for incorporating the implicit relationships between samples when training standard neural networks. GCondNet exploits the high-dimensionality of the data by creating many small graphs to capture the structure between samples within a feature. We show that WPFS and GCondNet outperform both standard and more recent methods on real-world biomedical datasets.

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This talk is part of the Artificial Intelligence Research Group Talks (Computer Laboratory) series.

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