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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: Ann Biomed Eng. 2018 Jul 26;46(12):1988–1999. doi: 10.1007/s10439-018-2095-6

Figure 5.

Figure 5

Classification visualization at the L7 layer of the AlexNet after fine-tuning. The images were produced by taking the first two principal components in dimension reduction with the PCA that projects all the features to a lower dimensional space. (a) The ground truth (GT) of the representation of the features from the fine-tuned AlexNet (L7) on Dataset I. (b) and (c) display the classification result based on the features extracted from the fine-tuned model using the classifiers of SVCrbf and RF.