Image classification network training method and device, equipment and storage medium

A classification network and training method technology, applied in the field of image recognition, can solve the problems of complex implementation, high cost, and affecting the training efficiency and classification accuracy of the image classification network

Pending Publication Date: 2020-08-25
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for the image classification network, a large amount of labeled data is required to train the model, which requires a lot of manual labeling work by professional doctors, and in the medical field, it is also difficult to obtain a large amount of medical image data, which makes the training process relatively difficult. Complex and expensive; in addition, although a large amount of training data is necessary for the training of deep neural networks, not all of the data are necessary. If the training data contains noise or wrongly labeled data, it will make the neural network The classification accuracy decreases. Therefore, training based on a large amount of or unnecessary data affects the training efficiency and classification accuracy of the image classification network, and the cost is high and the implementation is complicated.

Method used

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  • Image classification network training method and device, equipment and storage medium
  • Image classification network training method and device, equipment and storage medium
  • Image classification network training method and device, equipment and storage medium

Examples

Experimental program
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Embodiment 1

[0035] figure 1 It is a flow chart of an image classification network training method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where part of the data is selected from a large amount of data to be labeled to train the image classification network. Specifically, the image classification network training method can be executed by an image classification network training device, and the image classification network training device can be realized by software and / or hardware, and integrated in the device. Wherein, the equipment includes but is not limited to: desktop computer, notebook computer, cloud server, etc. The specific content of the labeled sample set or unlabeled data is not limited here. For example, in the process of identifying and classifying lung images in the field of medical imaging, the labeled and labeled image data can be used as The labeled sample set, and the unlabeled data refer to unlabeled lung imag...

Embodiment 2

[0057] image 3 It is a flowchart of a training method for an image classification network provided by Embodiment 2 of the present invention. This embodiment optimizes the process of selecting target data, updating the image classification network, and labeling results on the basis of the above-mentioned embodiments. The processing is described in detail. It should be noted that for technical details not exhaustively described in this embodiment, reference may be made to any of the foregoing embodiments.

[0058] In this embodiment, selecting target data from unlabeled data based on the policy network and evaluation network to label, specifically includes: based on the action vector a of the policy network, the unlabeled data is selected from large to small according to the selected probability value Sorting is performed, and a set amount of data with the highest probability value is selected as the target data for labeling; wherein, the action vector a is determined accordin...

Embodiment 3

[0083] Figure 5 It is a flow chart of an image classification network training method provided by Embodiment 3 of the present invention. This embodiment is optimized on the basis of the above embodiments, and specifically describes the update process of the policy network and the evaluation network. It should be noted that for technical details not exhaustively described in this embodiment, reference may be made to any of the foregoing embodiments.

[0084] In this embodiment, updating the policy network and the evaluation network according to the buffered data includes: calculating a reward function corresponding to the policy network and the evaluation network according to the buffered data, and the reward function is a Q-value function; calculating according to the buffered data The loss function corresponding to the policy network and the evaluation network; with the optimization goal of maximizing the reward function and minimizing the loss function, adjust the network p...

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Abstract

The invention discloses an image classification network training method, device and equipment, and a storage medium. The method comprises the steps of generating an image classification network basedon a labeled sample set; selecting target data from the unlabeled data for labeling based on the strategy network and the evaluation network; updating the labeled sample set according to a labeling result of the target data, and updating the image classification network according to the updated labeled sample set; updating the strategy network and the evaluation network according to the labeling result; and circularly executing the selection operation and the updating operation until a preset condition is met to obtain a trained image classification network. According to the technical scheme,only part of unlabeled data is selected each time for labeling and updating the image classification network, so that the data cost and labeling workload in the training process are reduced, and the classification precision is ensured.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of image recognition, and in particular to a training method, device, equipment and storage medium for an image classification network. Background technique [0002] With the rapid development of medical imaging equipment and artificial intelligence technology, medical data has grown on a large scale, and the analysis of artificial intelligence medical images based on deep learning has been gradually applied. An image classification network can be trained based on a large amount of labeled data, and the application of the image classification network can identify specific features, thereby identifying and classifying images, greatly reducing the workload of doctors, and improving diagnostic efficiency and accuracy. [0003] However, for the image classification network, a large amount of labeled data is required to train the model, which requires a lot of manual labeling work by pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06N3/04G06N3/08
CPCG06N3/08G06N3/045G06F18/24G06F18/214
Inventor 曹桂平
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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