损失函数: 改进版之focal loss 损失函数 | triplet loss: 提升样本区分度 weighted log loss出自YouTube 2016年的论文[1],基于交叉熵损失实现回归问题,对观看时长进行预估。 1 原理 回归问题常用MSE损失,但回归问题比较难学,为了缓解回归问题的学习难度,常用的方法是将回归问题转化为多分类问题,将预估目标划分为多...
Role of diffusion weighted MR imaging in characterization of focal kidney and upper urinary tract lesionsDiffusion weighted MRIRenal massTCCRCCADCPrevious studies suggested that the apparent diffusion coefficient (ADC) value could help in the differentiation and characterization of the benign and malignant...
higher recognition accuracy than the cross-entropy loss and the focal loss, which provides evidence for its effectiveness. Introduction As the key to intelligent underwater equipment, recognition technology is of particular interest in the field of underwater research [1]. Recognition of underwater ...