Using Wavelet Shrinkage in the Cox Proportional Hazards Regression model (simulation study).

Section: Research Paper
Issue
Vol. 19 No. 1 (2022): Volume 19 Issue 1
Published
Jun 25, 2025
Pages
17-29

Abstract

The proposed method in this paper dealt with the problem of data contamination in the Cox Proportional Hazards Regression model (CPHRM) by using Wavelet Shrinkage to de-noise data, calculating the discrete wavelet transformation coefficients for wavelets (Symlets and Daubechies), and thresholding methods (Universal, Minimax, and SURE), as well as thresholding rules (Soft and Hard). A software in the MATLAB language built for this propose will compare the proposed and classical method using simulation and real data. All the proposed methods have better efficiency than the classical method in estimating the Cox Proportional hazards model depending on both average of Akaike and Bayesian information criterion.Keywords: Cox PH model, Wavelet Shrinkage, thresholding rules.

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Authors

Taha.H Ali

Department of Informatics & Statistic, College of Administration and Economics, Salahaddin University, Erbil,, Iraq

ORCID
Jwana Rostam Qadir

Department of Informatics & Statistic, College of Administration and Economics, Salahaddin University, Erbil,, Iraq

ORCID

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How to Cite

Ali, T., طه, Rostam Qadir, J., & جوانا. (2025). Using Wavelet Shrinkage in the Cox Proportional Hazards Regression model (simulation study). IRAQI JOURNAL OF STATISTICAL SCIENCES, 19(1), 17–29. Retrieved from https://rjps.uomosul.edu.iq/index.php/stats/article/view/20999