MixUp-MIL: A Study on Linear & Multilinear Interpolation-Based Data Augmentation for Whole Slide Image Classification

• URL: http://arxiv.org/abs/2311.03052v2
• Date: Wed, 6 Dec 2023 15:22:43 GMT
• Title: MixUp-MIL: A Study on Linear & Multilinear Interpolation-Based Data Augmentation for Whole Slide Image Classification
• Authors: Michael Gadermayr and Lukas Koller and Maximilian Tschuchnig and Lea Maria Stangassinger and Christina Kreutzer and Sebastien Couillard-Despres and Gertie Janneke Oostingh and Anton Hittmair
• Abstract summary: We investigate a data augmentation technique for classifying digital whole slide images. The results show an extraordinarily high variability in the effect of the method. We identify several interesting aspects to bring light into the darkness and identified novel promising fields of research.
• Score: 1.5810132476010594
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: For classifying digital whole slide images in the absence of pixel level annotation, typically multiple instance learning methods are applied. Due to the generic applicability, such methods are currently of very high interest in the research community, however, the issue of data augmentation in this context is rarely explored. Here we investigate linear and multilinear interpolation between feature vectors, a data augmentation technique, which proved to be capable of improving the generalization performance classification networks and also for multiple instance learning. Experiments, however, have been performed on only two rather small data sets and one specific feature extraction approach so far and a strong dependence on the data set has been identified. Here we conduct a large study incorporating 10 different data set configurations, two different feature extraction approaches (supervised and self-supervised), stain normalization and two multiple instance learning architectures. The results showed an extraordinarily high variability in the effect of the method. We identified several interesting aspects to bring light into the darkness and identified novel promising fields of research.

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