Papers › Webly-Supervised Fine-Grained Recognition with Partial Label Learning
Webly-Supervised Fine-Grained Recognition with Partial Label Learning
Yu-Yan Xu, Yang shen, Xiu-Shen Wei, Jian Yang
The task of webly-supervised fne-grained recognition is to boost recognition accuracy of classifying subordinate categories (e.g., different bird species)by utilizing freely available but noisy web data.As the label noises signifcantly hurt the network training, it is desirable to distinguish and eliminate noisy images. In this paper, we propose two strategies, i.e., open-set noise removal and closed-set noise correction, to both remove such two kinds of web noises w.r.t. fne-grained recognition. Specifically, for open-set noise removal, we utilize a pre-trained deep model to perform deep descriptor transformation to estimate the positive correlation between these web images, and detect the open-set noises based on the correlation values. Regarding closed-set noise correction, we develop a top-k recall optimization loss for frstly assigning a label set towards each web image to reduce the impact of hard label assignment for closed-set noises. Then,we further propose to correct the sample with itslabel set as the true single label from a partial label learning perspective. Experiments on several webly-supervised fne-grained benchmark datasets show that our method obviously outperforms other existing state-of-the-art methods.
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