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Diagnosis of COVID-19 Using Chest X-ray Images and Disease Symptoms Based on Stacking Ensemble Deep Learning

202323 citationsOpen accessSuez University

In plain language

Diagnosing COVID-19 can be challenging before substantial complications such as lung damage or blood clots occur. To improve identification, this research proposes stacking ensemble deep learning models that evaluate both patient symptoms and chest X-ray images. One model processes symptom data by combining predictions from multi-layer perceptron, recurrent neural network, long short-term memory, and gated recurrent unit architectures into a support vector machine meta-learner. A second ensemble evaluates chest X-ray scans by combining outputs from pre-trained deep learning networks, specifically VGG16, InceptionV3, ResNet50, and DenseNet121, using an identical support vector machine meta-learning approach. Evaluated across two symptom datasets and two chest X-ray datasets, the stacked ensemble models achieved higher diagnostic performance than any of the individual constituent models tested on the same data.

Key takeaways

  • Two distinct stacking ensemble models were developed to detect COVID-19 using disease symptoms and chest X-ray images respectively.
  • Both ensemble systems use a support vector machine as the meta-learner to make final diagnostic predictions from multiple underlying neural networks.
  • The proposed stacking ensembles demonstrated superior performance compared to individual deep learning models across all symptom and imaging datasets evaluated.

Why it matters

COVID-19 is frequently difficult to identify in its early stages before significant physical damage occurs. Demonstrating that stacked ensemble algorithms outshine standard single-network deep learning models on both symptom records and radiographic images highlights a practical pathway to improve automated clinical decision support, potentially speeding up detection and treatment planning.

Commercialisation angle

This work demonstrates an applied, early-stage algorithmic framework that could be integrated into clinical diagnostic support software. Potential end users include hospital triage staff, radiologists, and healthcare providers assessing suspected COVID-19 cases from symptoms or imaging. However, because the abstract evaluates the models only on existing datasets without clinical trials or operational deployment, the technology remains at an early developmental stage before real-world adoption.

AI-generated from the published abstract. Always read the original work before citing.

Abstract

The COVID-19 virus is one of the most devastating illnesses humanity has ever faced. COVID-19 is an infection that is hard to diagnose until it has caused lung damage or blood clots. As a result, it is one of the most insidious diseases due to the lack of knowledge of its symptoms. Artificial intelligence (AI) technologies are being investigated for the early detection of COVID-19 using symptoms and chest X-ray images. Therefore, this work proposes stacking ensemble models using two types of COVID-19 datasets, symptoms and chest X-ray scans, to identify COVID-19. The first proposed model is a stacking ensemble model that is merged from the outputs of pre-trained models in the stacking: multi-layer perceptron (MLP), recurrent neural network (RNN), long short-term memory (LSTM), and gated recurrent unit (GRU). Stacking trains and evaluates the meta-learner as a support vector machine (SVM) to predict the final decision. Two datasets of COVID-19 symptoms are used to compare the first proposed model with MLP, RNN, LSTM, and GRU models. The second proposed model is a stacking ensemble model that is merged from the outputs of pre-trained DL models in the stacking: VGG16, InceptionV3, Resnet50, and DenseNet121; it uses stacking to train and evaluate the meta-learner (SVM) to identify the final prediction. Two datasets of COVID-19 chest X-ray images are used to compare the second proposed model with other DL models. The result has shown that the proposed models achieve the highest performance compared to other models for each dataset.

Research topics

  • COVID-19 diagnosis using AI
  • Phonocardiography and Auscultation Techniques
  • Anomaly Detection Techniques and Applications

Read the original research

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DOI: 10.3390/diagnostics13111968

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