| POŘÍZKA, Pavel, Jakub KLUS, David PROCHAZKA, Erik KÉPEŠ, Aleš HRDLIČKA, Jan NOVOTNÝ, Karel NOVOTNÝ a Jozef KAISER. Laser-Induced Breakdown Spectroscopy coupled with chemometrics for the analysis of steel: The issue of spectral outliers filtering. Spectrochimica Acta B. Elsevier, 2016, roč. 123, September, s. 114-120. ISSN 0584-8547. Dostupné z: https://dx.doi.org/10.1016/j.sab.2016.08.008. |
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@article{1374285,
author = {Pořízka, Pavel and Klus, Jakub and Prochazka, David and Képeš, Erik and Hrdlička, Aleš and Novotný, Jan and Novotný, Karel and Kaiser, Jozef},
article_number = {September},
doi = {http://dx.doi.org/10.1016/j.sab.2016.08.008},
keywords = {Laser-Induced Breakdown Spectroscopy; LIBS; Outlier filtering; Principal Component Analysis; PCA; Linear correlation; Total spectral intensity; Soft Independent Modelling of Class Analogies; SIMCA},
language = {eng},
issn = {0584-8547},
journal = {Spectrochimica Acta B},
title = {Laser-Induced Breakdown Spectroscopy coupled with chemometrics for the analysis of steel: The issue of spectral outliers filtering},
url = {http://www.sciencedirect.com/science/article/pii/S0584854716301367},
volume = {123},
year = {2016}
}
TY - JOUR
ID - 1374285
AU - Pořízka, Pavel - Klus, Jakub - Prochazka, David - Képeš, Erik - Hrdlička, Aleš - Novotný, Jan - Novotný, Karel - Kaiser, Jozef
PY - 2016
TI - Laser-Induced Breakdown Spectroscopy coupled with chemometrics for the analysis of steel: The issue of spectral outliers filtering
JF - Spectrochimica Acta B
VL - 123
IS - September
SP - 114-120
EP - 114-120
PB - Elsevier
SN - 05848547
KW - Laser-Induced Breakdown Spectroscopy
KW - LIBS
KW - Outlier filtering
KW - Principal Component Analysis
KW - PCA
KW - Linear correlation
KW - Total spectral intensity
KW - Soft Independent Modelling of Class Analogies
KW - SIMCA
UR - http://www.sciencedirect.com/science/article/pii/S0584854716301367
N2 - In this manuscript we highlight the necessity of outlier filtering prior the multivariate classification in Laser-Induced Breakdown Spectroscopy (LIBS) analyses. For the purpose of classification we chose to analyse BAM steel standards that possess similar composition of major and trace elements. To assess the improvement in figures of merit we compared the performance of three outlier filtering approaches (based on Principal Component Analysis, linear correlation and total spectral intensity) already separately discussed in the LIBS literature. The truncated data set was classified using Soft Independent Modelling of Class Analogies (SIMCA). Yielded results showed significant improvement in the performance of multivariate classification coupled to filtered data. The best performance was observed for the total spectral intensity filtering approach gaining the analytical figures of merit (overall accuracy, sensitivity, and specificity) over 98%. It is noteworthy that the results showed relatively low sensitivity and high specificity of the SIMCA algorithm regardless of the presence of outliers in the data sets. Moreover, it was shown that the variance in the data topology of training and testing data sets has a great impact on the consequent data classification.
ER -
POŘÍZKA, Pavel, Jakub KLUS, David PROCHAZKA, Erik KÉPEŠ, Aleš HRDLIČKA, Jan NOVOTNÝ, Karel NOVOTNÝ a Jozef KAISER. Laser-Induced Breakdown Spectroscopy coupled with chemometrics for the analysis of steel: The issue of spectral outliers filtering. \textit{Spectrochimica Acta B}. Elsevier, 2016, roč.~123, September, s.~114-120. ISSN~0584-8547. Dostupné z: https://dx.doi.org/10.1016/j.sab.2016.08.008.
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