Journal of Shandong University(Engineering Science) ›› 2019, Vol. 49 ›› Issue (2): 74-79.doi: 10.6040/j.issn.1672-3961.0.2018.273

• Machine Learning & Data Mining • Previous Articles     Next Articles

Computer aided diagnosis method for breast cancer based on AlexNet and ensemble classifiers

Xiaoxiong HOU1,2(),Xinzheng XU1,2,*(),Jiong ZHU1,Yanyan GUO1   

  1. 1. School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
    2. Guangxi High School Key Laboratory of Complex System and Computational Intelligence, Nanning 530006, Guangxi, China
  • Received:2018-07-06 Online:2019-04-20 Published:2019-04-19
  • Contact: Xinzheng XU E-mail:961458517@qq.com;xuxinzh@163.com
  • Supported by:
    国家自然科学基金项目(61672522);广西高校复杂系统与智能计算重点实验室开放课题重点项目(2017CSCI01)

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Abstract:

In order to solve the manual feature extraction of medical images in computer aided diagnosis, Alexnet was pre-trained on the ImageNet dataset, and feature extraction was performed on the medical image based on Alexnet with transfer learning. The ensemble learning method was used to train the classifier to classify and obtain a better classification effect than the single classifier. The results showed that the AUC(area under curve) of Alexnet deep learning model and random forest ensemble classifier reached 0.87±0.03, and the effect of the ensemble classifier was better than that of the single classifier in the same network depth.

Key words: medical image analysis, deep learning, convolutional neural network, computer aided diagnosis, ensemble classifiers

CLC Number: 

  • TP391

Fig.1

The workflow chart of CAD"

Fig.2

Steps carried out in preprocessing of mammography"

Fig.3

Structure of Alexnet network"

Table 1

Corresponding test AUC of different depthsCNN with SVM classifier"

特征提取模型 AUC
CNN(2层) 0.76±0.05
CNN(3层) 0.82±0.03
Alexnet 0.84±0.06

Table 2

Corresponding test AUC of Alexnet model withdifferent classifier"

分类器 AUC值
SVM 0.84±0.06
Logistic Regression 0.83±0.03
Softmax 0.85±0.04

Table 3

Test AUC values of Alexnet model withensemble classifier"

分类器 AUC值
Softmax 0.85±0.04
Random Forest 0.87±0.03
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