2 citations · 3 across the 7 of their papers we have counts for
8 papers
Social Network Datasets on Reddit Financial Discussion
Zezhong Wang, Siyang Hao, Inez Maria Zwetsloot +1
Stock markets are impacted by a large variety of factors including news and discussions among investors about investment opportunities. With the emergence of social media, new oppo…
A Real Time Monitoring Approach for Bivariate Event Data
Inez Maria Zwetsloot, Tahir Mahmood, Funmilola Mary Taiwo +1
Early detection of changes in the frequency of events is an important task, in, for example, disease surveillance, monitoring of high-quality processes, reliability monitoring and…
A Change-Point Based Control Chart for Detecting Sparse Changes in High-Dimensional Heteroscedastic Data
Zezhong Wang, Inez Maria Zwetsloot
Because of the curse-of-dimensionality, high-dimensional processes present challenges to traditional multivariate statistical process monitoring (SPM) techniques. In addition, the…
A Review of Dispersion Control Charts for Multivariate Individual Observations
Jimoh Olawale Ajadi, Zezhong Wang, Inez Maria Zwetsloot
A multivariate control chart is designed to monitor process parameters of multiple correlated quality characteristics. Often data on multivariate processes are collected as individ…
Multivariate Time-Between-Events Monitoring -- An overview and some (overlooked) underlying complexities
Inez Maria Zwetsloot, Tahir Mahmood, William H. Woodall
We review methods for monitoring multivariate time-between-events (TBE) data. We present some underlying complexities that have been overlooked in the literature. It is helpful to…
Should Observations be Grouped for Effective Monitoring of Multivariate Process Variability?
Jimoh Olawale Ajadi, Inez Maria Zwetsloot
A multivariate dispersion control chart monitors changes in the process variability of multiple correlated quality characteristics. In this article, we investigate and compare the…