Premium
A roughness penalty approach and its application to noisy hyphenated chromatographic two‐way data
Author(s) -
Liang YiZeng,
Leung Alexander KaiMan,
Chau FooTim
Publication year - 1999
Publication title -
journal of chemometrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.47
H-Index - 92
eISSN - 1099-128X
pISSN - 0886-9383
DOI - 10.1002/(sici)1099-128x(199909/10)13:5<511::aid-cem545>3.0.co;2-c
Subject(s) - smoothing , noise (video) , computer science , penalty method , noisy data , chromatography , resolution (logic) , biological system , chemistry , artificial intelligence , mathematics , computer vision , mathematical optimization , image (mathematics) , biology
In order to improve the signal detection and resolution of chemical components with very low concentrations in hyphenated chromatographic two‐way data, the effect of measurement noise from the instruments on these two aspects is first investigated in the present paper. A new smoothing technique called the roughness penalty method is introduced to reduce the influence of this measurement noise. Our results show that the proposed method can enhance the detection ability significantly. In addition, the resolved spectra after the roughness penalty smoothing are found to be significantly improved. The performance of the method was assessed using simulated and real hyphenated two‐way data. Copyright © 1999 John Wiley & Sons, Ltd.