Gao B B, Xing C, Xie C W, et al. Deep label distribution learning with label ambiguity[J]. IEEE Transactions on Image Processing, 2017, 26(6): 2825-2838.
 Yeh C K, Wu W C, Ko W J, et al. Learning deep latent space for multi-label classification[C]//Thirty-First AAAI Conference on Artificial Intelligence. 2017.
 Xiong B, Kalantidis Y, Ghadiyaram D, et al. Less is more: Learning highlight detection from video duration[C] // Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition. 2019: 1258-1267.
 Zhao K, Chu W S, Martinez A M. Learning facial action units from web images with scalable weakly supervised clustering[C]//Proceedings of the IEEE Conference on computer vision and pattern recognition. 2018: 2090-2099.
 Kipf T N, Welling M. Semi-supervised classification with graph convolutional networks[J]. arXiv preprint arXiv:1609.02907, 2016.
 Li Q, Wu X M, Liu H, et al. Label efficient semi-supervised learning via graph filtering[C]//Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition. 2019: 9582-9591.
 Zhang X, Liu H, Li Q, et al. Attributed graph clustering via adaptive graph convolution[J]. arXiv preprint arXiv:1906.01210, 2019.