# A modified deep convolutional neural network for detecting COVID-19 and pneumonia from chest X-ray images based on the concatenation of Xception and ResNet50V2

Source: [A modified deep convolutional neural network for detecting COVID-19 and pneumonia from chest X-ray images based on the concatenation of Xception and ResNet50V2](<https://www.sota2.com/research/paper/68fa69e91e209131cea24d0a>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T23:11:37.721Z

Authors: Mohammad Rahimzadeh, Abolfazl Attar

Published: 2020-04-17T03:38:39.000Z

## Abstract

In this paper, we have trained several deep convolutional networks with introduced training techniques for classifying X-ray images into three classes: normal, pneumonia, and COVID-19, based on two open-source datasets. Our data contains 180 X-ray images that belong to persons infected with COVID-19, and we attempted to apply methods to achieve the best possible results. In this research, we introduce some training techniques that help the network learn better when we have an unbalanced dataset (fewer cases of COVID-19 along with more cases from other classes). We also propose a neural network that is a concatenation of the Xception and ResNet50V2 networks. This network achieved the best accuracy by utilizing multiple features extracted by two robust networks. For evaluating our network, we have tested it on 11302 images to report the actual accuracy achievable in real circumstances. The average accuracy of the proposed network for detecting COVID-19 cases is 99.50%, and the overall average accuracy for all classes is 91.4%.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

- [COVID-19 Ventilation Prediction on SnapCXR (test)](<https://www.sota2.com/research/sota/covid-19-ventilation-prediction-on-snapcxr-test.md>): COVID-19 Ventilation Prediction; SnapCXR (test); AUC: 0.75.

- [COVID-19 Mortality Prediction on SnapCXR dataset (test)](<https://www.sota2.com/research/sota/covid-19-mortality-prediction-on-snapcxr-dataset-test.md>): COVID-19 Mortality Prediction; SnapCXR dataset (test); AUC: 77.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2004.08052>)

[PDF](<https://arxiv.org/pdf/2004.08052.pdf>)