【摘要】 研究目的为比较卷积神经网络与反向传播神经网络在核素识别中的效果。将能谱数据变换为灰度图像,作为卷积神经网络的输入;变换后的图像经过奇异值分解提取特征,作为反向传播神经网络的输入。两类网络进行训练后,对它们在核素识别中的性能进行评估、测试和对比。结果表明:利用深度学习的方法可以进行核素识别。两种方法中,卷积神经网络较于反向传播神经网络性能更优;奇异值分解的方法能够提高反向传播神经网络的识别效果。更多还原

【Abstract】 The aim was to compare the performances of two nuclide identification algorithms based on deep learning.Energy spectrum data were transformed into images as the input of Convolutional Neural Network.Singular Value Decomposition was used to extract the features of the transformed image as the input of the Back Propagation Neural Network.The two kinds of networks were trained and their performances in nuclide identification were compared and evaluated.The results showed that the deep learning method was feasible and efficient for nuclide identification.Singular Value Decomposition method could improve the recognition effect of Back Propagation Neural Network.The performance of the Convolutional Neural Network was better than that of Back Propagation Neural Network.更多还原