Deep Learning with robustness to missing data: A novel approach to the detection of COVID-19

• URL: http://arxiv.org/abs/2103.13833v1
• Date: Thu, 25 Mar 2021 13:21:53 GMT
• Title: Deep Learning with robustness to missing data: A novel approach to the detection of COVID-19
• Authors: Erdi \c{C}all{\i}, Keelin Murphy, Steef Kurstjens, Tijs Samson, Robert Herpers, Henk Smits, Matthieu Rutten and Bram van Ginneken
• Abstract summary: We propose a novel deep learning architecture, DFCN, for the detection of COVID-19. DFCN is designed to be robust to missing input data. An ablation study extensively evaluates the performance benefits of the DFCN architecture.
• Score: 3.6449670408654304
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In the context of the current global pandemic and the limitations of the RT-PCR test, we propose a novel deep learning architecture, DFCN, (Denoising Fully Connected Network) for the detection of COVID-19 using laboratory tests and chest x-rays. Since medical facilities around the world differ enormously in what laboratory tests or chest imaging may be available, DFCN is designed to be robust to missing input data. An ablation study extensively evaluates the performance benefits of the DFCN architecture as well as its robustness to missing inputs. Data from 1088 patients with confirmed RT-PCR results are obtained from two independent medical facilities. The data collected includes results from 27 laboratory tests and a chest x-ray scored by a deep learning network. Training and test datasets are defined based on the source medical facility. Data is made publicly available. The performance of DFCN in predicting the RT-PCR result is compared with 3 related architectures as well as a Random Forest baseline. All models are trained with varying levels of masked input data to encourage robustness to missing inputs. Missing data is simulated at test time by masking inputs randomly. Using area under the receiver operating curve (AUC) as a metric, DFCN outperforms all other models with statistical significance using random subsets of input data with 2-27 available inputs. When all 28 inputs are available DFCN obtains an AUC of 0.924, higher than achieved by any other model. Furthermore, with clinically meaningful subsets of parameters consisting of just 6 and 7 inputs respectively, DFCN also achieves higher AUCs than any other model, with values of 0.909 and 0.919.

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