A Robust Skewed Boxplot for Detecting Outliers in Rainfall Observations in Real-Time Flood Forecasting
Joint Authors
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-28
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The standard boxplot is one of the most popular nonparametric tools for detecting outliers in univariate datasets.
For Gaussian or symmetric distributions, the chance of data occurring outside of the standard boxplot fence is only 0.7%.
However, for skewed data, such as telemetric rain observations in a real-time flood forecasting system, the probability is significantly higher.
To overcome this problem, a medcouple (MC) that is robust to resisting outliers and sensitive to detecting skewness was introduced to construct a new robust skewed boxplot fence.
Three types of boxplot fences related to MC were analyzed and compared, and the exponential function boxplot fence was selected.
Operating on uncontaminated as well as simulated contaminated data, the results showed that the proposed method could produce a lower swamping rate and higher accuracy than the standard boxplot and semi-interquartile range boxplot.
The outcomes of this study demonstrated that it is reasonable to use the new robust skewed boxplot method to detect outliers in skewed rain distributions.
American Psychological Association (APA)
Zhao, Chao& Yang, Jinyan. 2019. A Robust Skewed Boxplot for Detecting Outliers in Rainfall Observations in Real-Time Flood Forecasting. Advances in Meteorology،Vol. 2019, no. 2019, pp.1-7.
https://search.emarefa.net/detail/BIM-1118549
Modern Language Association (MLA)
Zhao, Chao& Yang, Jinyan. A Robust Skewed Boxplot for Detecting Outliers in Rainfall Observations in Real-Time Flood Forecasting. Advances in Meteorology No. 2019 (2019), pp.1-7.
https://search.emarefa.net/detail/BIM-1118549
American Medical Association (AMA)
Zhao, Chao& Yang, Jinyan. A Robust Skewed Boxplot for Detecting Outliers in Rainfall Observations in Real-Time Flood Forecasting. Advances in Meteorology. 2019. Vol. 2019, no. 2019, pp.1-7.
https://search.emarefa.net/detail/BIM-1118549
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118549