Asymmetric Co-Training with Explainable Cell Graph Ensembling for
Histopathological Image Classification
- URL: http://arxiv.org/abs/2308.12737v1
- Date: Thu, 24 Aug 2023 12:27:03 GMT
- Title: Asymmetric Co-Training with Explainable Cell Graph Ensembling for
Histopathological Image Classification
- Authors: Ziqi Yang, Zhongyu Li, Chen Liu, Xiangde Luo, Xingguang Wang, Dou Xu,
Chaoqun Li, Xiaoying Qin, Meng Yang, Long Jin
- Abstract summary: We propose an asymmetric co-training framework combining a deep graph convolutional network and a convolutional neural network.
We build a 14-layer deep graph convolutional network to handle cell graph data.
We evaluate our approach on the private LUAD7C and public colorectal cancer datasets.
- Score: 28.949527817202984
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Convolutional neural networks excel in histopathological image
classification, yet their pixel-level focus hampers explainability. Conversely,
emerging graph convolutional networks spotlight cell-level features and medical
implications. However, limited by their shallowness and suboptimal use of
high-dimensional pixel data, GCNs underperform in multi-class histopathological
image classification. To make full use of pixel-level and cell-level features
dynamically, we propose an asymmetric co-training framework combining a deep
graph convolutional network and a convolutional neural network for multi-class
histopathological image classification. To improve the explainability of the
entire framework by embedding morphological and topological distribution of
cells, we build a 14-layer deep graph convolutional network to handle cell
graph data. For the further utilization and dynamic interactions between
pixel-level and cell-level information, we also design a co-training strategy
to integrate the two asymmetric branches. Notably, we collect a private
clinically acquired dataset termed LUAD7C, including seven subtypes of lung
adenocarcinoma, which is rare and more challenging. We evaluated our approach
on the private LUAD7C and public colorectal cancer datasets, showcasing its
superior performance, explainability, and generalizability in multi-class
histopathological image classification.
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