Domain Adaptation Algorithm with Feature Center Alignment for Few-shot Learning

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    Domain adaptation is a transfer learning algorithm used when the training and test sets do not satisfy the independent homogeneous distribution condition. When the distribution difference between two domains is large, the intra-domain transferability will be reduced, and the existing domain adaptation algorithms need to obtain a large amount of target domain data, which cannot be achieved in some practical applications. In view of the shortcomings of existing domain adaptation methods, the convolutional neural network model is used, and a domain adaptation algorithm based on feature center alignment for few-shot learning is proposed to find domain invariant features, improve the distinguishability of target domain features, and strengthen the classification accuracy. Simulation and experimental results for office-31 public dataset recognition and radar working pattern recognition under small sample conditions show that the proposed method improves the average recognition accuracy of the office-31 dataset by 12.9% compared with the maximum mean discrepancy method, and the radar working pattern recognition accuracy reaches 91%, which is 10% better than the maximum mean discrepancy method.

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  • Received:November 22,2022
  • Revised:December 23,2022
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  • Online: April 14,2023
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