Model training method and device, image feature extraction method and device and electronic equipment

• Main Authors: ZHAO YUAN, GAN CHUNSHENG, SHEN HAIFENG
• Format: Patent
• Language: Chinese; English
• Published: 12.06.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention provides a model training method and device, an image feature extraction method and device and electronic equipment, and the model training method comprises the steps: carrying out the first-stage training of a to-be-trained model through employing training data, obtaining a first-stage model, and employing a first loss function as a supervision signal in the first-stage training; performing second-stage training on the first-stage model by using the training data to obtain a second-stage model, the second-stage training using the first loss function and a second loss function assupervision signals, the training data being an image data set; and third-stage training is carried out on the second-stage model by using the training data to obtain a target model, and a second loss function is used as a supervision signal in the third-stage training. The target model obtained by training in the three stages can better classify the image features. 本申请提供了一种模型训练方法、图像特征提取方法、装置及电子设备，其中，所述模型训练方法包括：使用训练数据对待训