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HSADML:基于超球体角度深度度量的脑肿瘤分类学习

HSADML: Hyper-Sphere Angular Deep Metric based Learning for Brain Tumor Classification

National Institute of Technology Raipur(印度国立技术学院赖布尔分校)

Aman Verma, Vibhav Prakash Singh

摘要:

脑肿瘤是一种异常的团块状细胞,它们穿透大脑的各个区域。它们的及时识别和分类有助于医生提供适当的治疗。然而,脑肿瘤的分类是相当复杂的,因为高类内相似性和低类间变异性。由于不同类别的各种MRI切片之间的形态相似性,挑战更加深入。这一切都阻碍了分类模型的普遍性。为此,本文提出了HSADML,这是一种新的框架,可以使用SphereFace Loss实现深度度量学习(DML)。SphereFace loss将特征嵌入到超球面流形中,然后在嵌入上施加余量以增强类之间的可微性。通过利用基于SphereFace损失的深度度量学习,可以确保类中的样本聚集在一起,而不同的样本则被分开。结果反映了该方法的优越性,所提出的框架使用k-NN(k=1)实现了最先进的98.69%的验证准确率,这显著高于正常的SoftMax Loss训练,虽然获得了98.47%的验证准确率,但也具有有限的类间可分性和类内接近度。实验分析表明,在不同的分类器和损失函数设置的方法的潜力。

英文摘要:

Brain Tumors are abnormal mass of clustered cells penetrating regions of brain. Their timely identification and classification help doctors to provide appropriate treatment. However, Classifi-cation of Brain Tumors is quite intricate because of high-intra class similarity and low-inter class variability. Due to morphological similarity amongst various MRI-Slices of different classes the challenge deepens more. This all leads to hampering generalizability of classification models. To this end, this paper proposes HSADML, a novel framework which enables deep metric learning (DML) using SphereFace Loss. SphereFace loss embeds the features into a hyperspheric-manifold and then imposes margin on the embeddings to enhance differentiability between the classes. With utilization of SphereFace loss based deep metric learning it is ensured that samples from class clustered together while the different ones are pushed apart. Results reflects the promi-nence in the approach, the proposed framework achieved state-of-the-art 98.69% validation accu-racy using k-NN (k=1) and this is significantly higher than normal SoftMax Loss training which though obtains 98.47% validation accuracy but that too with limited inter-class separability and intra-class closeness. Experimental analysis done over various classifiers and loss function set-tings suggests potential in the approach.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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