车牌识别技术是智能交通管理系统的核心,对它的研究与开发具有重要的商业前景。传统的车牌字符识别方法存在特征提取复杂的问题,而卷积神经网络作为一种高效识别算法,对处理二维车牌图像具有独特的优越性。针对传统卷积神经网络LeNet-5...车牌识别技术是智能交通管理系统的核心,对它的研究与开发具有重要的商业前景。传统的车牌字符识别方法存在特征提取复杂的问题,而卷积神经网络作为一种高效识别算法,对处理二维车牌图像具有独特的优越性。针对传统卷积神经网络LeNet-5识别车牌图像时,存在训练数据较少、全连接层参数冗余以及网络严重过拟合等一系列的问题,设计了一种全局中间值池化(GMP-LeNet)网络,其使用卷积层代替全连接层,利用Network In Network网络中的1*1卷积核进行通道降维,全局均值池化层直接将降维后的特征图馈送到输出层。实验证明,GMP-LeNet网络能有效抑制过拟合现象,并具有较快的识别速度和较高的鲁棒性,车牌识别率达到了98.5%。展开更多
Machine learning models may outperform traditional statistical regression algorithms for predicting clinical outcomes.Proper validation of building such models and tuning their underlying algorithms is necessary to av...Machine learning models may outperform traditional statistical regression algorithms for predicting clinical outcomes.Proper validation of building such models and tuning their underlying algorithms is necessary to avoid over-fitting and poor generalizability,which smaller datasets can be more prone to.In an effort to educate readers interested in artificial intelligence and model-building based on machine-learning algorithms,we outline important details on crossvalidation techniques that can enhance the performance and generalizability of such models.展开更多
文摘车牌识别技术是智能交通管理系统的核心,对它的研究与开发具有重要的商业前景。传统的车牌字符识别方法存在特征提取复杂的问题,而卷积神经网络作为一种高效识别算法,对处理二维车牌图像具有独特的优越性。针对传统卷积神经网络LeNet-5识别车牌图像时,存在训练数据较少、全连接层参数冗余以及网络严重过拟合等一系列的问题,设计了一种全局中间值池化(GMP-LeNet)网络,其使用卷积层代替全连接层,利用Network In Network网络中的1*1卷积核进行通道降维,全局均值池化层直接将降维后的特征图馈送到输出层。实验证明,GMP-LeNet网络能有效抑制过拟合现象,并具有较快的识别速度和较高的鲁棒性,车牌识别率达到了98.5%。
文摘Machine learning models may outperform traditional statistical regression algorithms for predicting clinical outcomes.Proper validation of building such models and tuning their underlying algorithms is necessary to avoid over-fitting and poor generalizability,which smaller datasets can be more prone to.In an effort to educate readers interested in artificial intelligence and model-building based on machine-learning algorithms,we outline important details on crossvalidation techniques that can enhance the performance and generalizability of such models.
