tetano
Editor, Senior Moderator
BMC Bioinformatics
. 2021 Nov 8;22(Suppl 5):147.
doi: 10.1186/s12859-021-04083-x.
Classifying chest CT images as COVID-19 positive/negative using a convolutional neural network ensemble model and uniform experimental design method
Yao-Mei Chen[SUP] 1 2 [/SUP], Yenming J Chen[SUP] 3 [/SUP], Wen-Hsien Ho[SUP] 4 5 [/SUP], Jinn-Tsong Tsai[SUP] 6 7 [/SUP]
Affiliations
Abstract
Background: To classify chest computed tomography (CT) images as positive or negative for coronavirus disease 2019 (COVID-19) quickly and accurately, researchers attempted to develop effective models by using medical images.
Results: A convolutional neural network (CNN) ensemble model was developed for classifying chest CT images as positive or negative for COVID-19. To classify chest CT images acquired from COVID-19 patients, the proposed COVID19-CNN ensemble model combines the use of multiple trained CNN models with a majority voting strategy. The CNN models were trained to classify chest CT images by transfer learning from well-known pre-trained CNN models and by applying their algorithm hyperparameters as appropriate. The combination of algorithm hyperparameters for a pre-trained CNN model was determined by uniform experimental design. The chest CT images (405 from COVID-19 patients and 397 from healthy patients) used for training and performance testing of the COVID19-CNN ensemble model were obtained from an earlier study by Hu in 2020. Experiments showed that, the COVID19-CNN ensemble model achieved 96.7% accuracy in classifying CT images as COVID-19 positive or negative, which was superior to the accuracies obtained by the individual trained CNN models. Other performance measures (i.e., precision, recall, specificity, and F[SUB]1[/SUB]-score) obtained bythe COVID19-CNN ensemble model were higher than those obtained by individual trained CNN models.
Conclusions: The COVID19-CNN ensemble model had superior accuracy and excellent capability in classifying chest CT images as COVID-19 positive or negative.
Keywords: Algorithm hyperparameter; COVID-19; Chest computed tomography image; Convolutional neural network; Ensemble model.
. 2021 Nov 8;22(Suppl 5):147.
doi: 10.1186/s12859-021-04083-x.
Classifying chest CT images as COVID-19 positive/negative using a convolutional neural network ensemble model and uniform experimental design method
Yao-Mei Chen[SUP] 1 2 [/SUP], Yenming J Chen[SUP] 3 [/SUP], Wen-Hsien Ho[SUP] 4 5 [/SUP], Jinn-Tsong Tsai[SUP] 6 7 [/SUP]
Affiliations
- PMID: 34749629
- DOI: 10.1186/s12859-021-04083-x
Abstract
Background: To classify chest computed tomography (CT) images as positive or negative for coronavirus disease 2019 (COVID-19) quickly and accurately, researchers attempted to develop effective models by using medical images.
Results: A convolutional neural network (CNN) ensemble model was developed for classifying chest CT images as positive or negative for COVID-19. To classify chest CT images acquired from COVID-19 patients, the proposed COVID19-CNN ensemble model combines the use of multiple trained CNN models with a majority voting strategy. The CNN models were trained to classify chest CT images by transfer learning from well-known pre-trained CNN models and by applying their algorithm hyperparameters as appropriate. The combination of algorithm hyperparameters for a pre-trained CNN model was determined by uniform experimental design. The chest CT images (405 from COVID-19 patients and 397 from healthy patients) used for training and performance testing of the COVID19-CNN ensemble model were obtained from an earlier study by Hu in 2020. Experiments showed that, the COVID19-CNN ensemble model achieved 96.7% accuracy in classifying CT images as COVID-19 positive or negative, which was superior to the accuracies obtained by the individual trained CNN models. Other performance measures (i.e., precision, recall, specificity, and F[SUB]1[/SUB]-score) obtained bythe COVID19-CNN ensemble model were higher than those obtained by individual trained CNN models.
Conclusions: The COVID19-CNN ensemble model had superior accuracy and excellent capability in classifying chest CT images as COVID-19 positive or negative.
Keywords: Algorithm hyperparameter; COVID-19; Chest computed tomography image; Convolutional neural network; Ensemble model.