Distribution-Free EWMA Scheme for Joint Monitoring of Location and Scale Based on Post-Sales Online Review Process

Nowadays, the online comment process of product after-sales has become a key part of product development. Quality problems, such as the failure of products or services, are more likely to exist or hide in negative comments. Therefore, this paper focuses on detecting abnormal changes in both the time...

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Bibliographic Details

Published in:	Axioms
Main Authors:	Sirui An, Jiujun Zhang
Format:	Article
Language:	English
Published:	MDPI AG 2025-09-01
Subjects:	distribution-free monitoring statistical process monitoring time between reviews negative review lepage statistic
Online Access:	https://www.mdpi.com/2075-1680/14/10/719