Long-tail distribution image data identification method based on dual-channel learning

A technology of image data and recognition method, which is applied in the field of long-tail distribution image data recognition based on dual-channel learning, to achieve the effects of improving feature representation, enhancing compactness, and improving recognition accuracy

Pending Publication Date: 2020-10-02
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and proposes an effective, scientific and reasonable long-tail distribution image data recognition method based on dual-channel learning, which combines unbalanced learning and small sample learning for To solve the problem of long-tail distribution image data recognition, the unbalanced learning channel can improve the recognition accuracy of the model for unbalanced datasets

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[0032] The present invention will be further described below in conjunction with specific embodiments.

[0033] The Places365 dataset is a large image dataset covering 365 scene categories. Each category contains no more than 5000 training images, 50 verification images, and 900 test images. The original data set of Places365 is down-sampled according to the Pareto distribution with the power exponent parameter of 6, and the training set of the long tail distribution image data set contains a total of 62500 images, of which each category contains a maximum of 4980 images and a minimum of 5 Picture, the constructed training set Places-LT of the long-tail distributed image data set is as figure 1 Shown. The validation set of the long-tail distributed image data set samples 20 images of each type to track and evaluate the performance of the dual-channel learning model. The test set of the long-tailed distributed image data set samples 50 images of each type to evaluate and compare th

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Abstract

The invention discloses a long-tail distribution image data identification method based on dual-channel learning. The method comprises the following steps: 1) constructing a dual-channel learning model combining unbalanced learning and small sample learning; 2) updating all parameters in the dual-channel learning model by utilizing dual-channel learning total loss and back propagation, and storingoptimal dual-channel learning model parameters; and 3) inputting the image data of the test set to the optimal dual-channel learning model, and obtaining the prediction label of the image. Accordingto the invention, unbalanced learning and small sample learning are combined to solve the problem of long-tail distribution image data identification; the unbalanced learning channel can improve the identification accuracy of the unbalanced data set; the small sample learning channel can improve the feature representation of model learning, and the dual-channel total loss enables the model to focus on the unbalanced learning channel in the early stage of training and focus on the small sample learning channel in the later stage of training, thereby improving the recognition accuracy of the long-tail distribution image data on the whole.

Description

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Claims

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Application Information

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Owner SOUTH CHINA UNIV OF TECH
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