PLS cluster analysis of Individual particle spectrum

Abstract

Abstract:

PLS(Partial Least Squares) cluster analysis, based on PLS regression procedure with a self-organizing mechanism, is a novel data analysis method of spectrum and is. PLS Cluster was first used to classify simulated dataset, and present the general properties and validity. Then it was used to aerosol laser time-of-flight mass spectra data, showing correctness and successful application in practice. Finally, this mothod was applied to mixed spectra dataset of aerosol particles of CaCl2, MgCl2, NaCl and KCl. By examing the statistical properties of obtained dendrogram plots and nodes, we got the reason of clustering and misclassifying. It demonstrates the potency of application of PLS_Cluster in individual aerosol particle spectra.

Key words: spectroscopy, PLS-regression, cluster analysis, individual aerosol particle

CLC Number:

O433

ZHANG Ziliang, TI Rufang, HUANG Teng, WANG Yingping, DING Lei, ZHENG Haiyang, FANG Li. PLS cluster analysis of Individual particle spectrum[J]. J4, 2012, 29(1): 106-113.

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PLS cluster analysis of Individual particle spectrum

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