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Hiwa Farughi

Hiwa Farughi

Academic rank: Professor
ORCID: 0000-0001-9745-9691
Education: PhD.
ScopusId: 54789623500
Faculty: Faculty of Engineering
Address:
Phone: 08733660073

Research

Title
Data Consumption Analysis by Two Ordinal Multivariate Control Charts
Type
JournalPaper
Keywords
Statistical Process Monitoring, Ordinal Multivariate Processes, Data Consumption, Customer Behavior
Year
2022
Journal International Journal of Engineering
DOI
Researchers Ahmad Hakimi ، Hiwa Farughi ، Amirhossein Amiri ، Jamal Arkat

Abstract

The process quality is described by one or more important factors called multivariate processes. Contingency tables used to demonstrate the relevance between these factors and modeled by log-linear model. There are also two types of statistical variables that are nominal and ordinal. In this paper, the variables are ordinal and two new control charts have been used to monitor the process of analyzing subscribers' consumption. These two multivariate ordinal chart are the MR chart and the multivariate ordinal categorical (MOC) used to monitor processes based on the ordinal log-linear model in Phase II. In addition, with a real numerical example, about analyzing the internet usage of mobile subscribers, two control charts are drawn and compared with each other in terms of average run length. In this case, we focus on customer behavior and in real action, by marketing department, changing in data consumption has been seen and analyzed. The study of the two proposed charts was performed using simulation based on real example in different situation, and the MOC performed relatively better.