Dan Zhang

Mr. Dan Zhang


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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23 September 2024 in Remote Sensing
Verified
Journal Article
Open access
PDF file
DZDan Zhang
Dan Zhang
YRYiyuan Ren
Yiyuan Ren
CLChun Liu
Chun Liu
ZHZhigang Han
Zhigang Han
JWJiayao Wang
Jiayao Wang
Few-shot hyperspectral image classification aims to develop the ability of classifying image pixels by using relatively few labeled pixels per class. However, due to the inaccuracy of the localization system and the bias of the ground survey, the potential noisy labels in the training data pose a very significant challenge to few-shot hyperspectral image classification. To solve this problem, this paper proposes a weighted contrastive prototype network (WCPN) for few-shot hyperspectral image classification with noisy labels. WCPN first utilizes a similarity metric to generate the weights of the samples from the same classes, and applies them to calibrate the class prototypes of support and query sets. Then the weighted prototype network will minimize the distance between features and prototypes to train the network. WCPN also incorporates a weighted contrastive regularization function that uses the sample weights as gates to filter the fake positive samples whose labels are incorrect to further improve the discriminative power of the prototypes. We conduct experiments on multiple hyperspectral image datasets with artificially generated noisy labels, and the results show that the WCPN has excellent performance that can sufficiently mitigate the impact of noisy labels.

2 June 2025 in Theoretical and Applied Climatology
Verified
Journal Article
Closed access
PDF file
DZDan Zhang
Dan Zhang
ZLZiwei Li
Ziwei Li
Hao HuHao Hu
Hao Hu
JWJiayuan Wu
Jiayuan Wu
CWChaohui Wu
Chaohui Wu