Functional Outlier Detection for Density-Valued Data with Application to Robustify Distribution-to-Distribution Regression

Xinyi Lei, Zhicheng Chen & Hui Li
Distributional data analysis, concerned with the statistical analysis of data objects consisting of random probability distributions in the framework of functional data analysis (FDA), has received considerable interest in recent years and is increasingly applied in various fields including engineering. Outlier detection and robustness are of great practical interest; however, these aspects remain unexplored for distributional data. To this end, this study focuses on density-valued outlier detection and its application in robust distributional regression. Specifically,...
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