Robust Label Distribution Learning from a Perspective of Local Collaboration
XU Suping1,2, SHANG Lin1,2, ZHOU Yujie1,2
1. Department of Computer Science and Technology, Nanjing University, Nanjing 210023 2. State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing 210023
Abstract：In the most of label distribution learning(LDL)algorithms, the correlations among different labels and the overall structure of label distribution are destroyed to a certain extent. Moreover, most existing LDL algorithms mainly focus on improving the predictive performance of label distribution, while ignoring the significance of computational cost and noise robustness in practical applications. To tackle these issues, a local collaborative representation based label distribution learning algorithm (LCR-LDL) is proposed. In LCR-LDL, an unlabeled sample is treated as a collaborative representation of the local dictionary constructed by the neighborhood of the unlabeled sample, and the discriminating information of representation coefficients is utilized to reconstruct the label distribution of unlabeled sample. Experimental results on 15 real-world LDL datasets show that LCR-LDL effectively improves the predictive performance for LDL tasks with a better robustness and low computational cost.
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2021, Vol. 34 
