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COSIMA data analysis using multivariate techniques
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2014 (English)In: Geoscientific Instrumentation, Methods and Data Systems, ISSN 2193-0856, E-ISSN 2193-0864, Vol. 4, p. 455-489Article in journal (Refereed) Published
Abstract [en]

We describe how to use multivariate analysis of complex TOF-SIMS spectra introducing the method of random projections. The technique allows us to do full clustering and classification of the measured mass spectra. In this paper we use the tool for classification purposes. The presentation describes calibration experiments of 19 minerals on Ag and Au substrates using positive mode ion spectra. The discrimination between individual minerals gives a crossvalidation Cohen κ for classification of typically about 80%. We intend to use the method as a fast tool to deduce a qualitative similarity of measurements.

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2014. Vol. 4, p. 455-489
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Natural Sciences
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URN: urn:nbn:se:ri:diva-26557DOI: 10.5194/gid-4-455-2014OAI: oai:DiVA.org:ri-26557DiVA, id: diva2:1053560
Note

A3397

Available from: 2016-12-08 Created: 2016-12-08 Last updated: 2018-08-21Bibliographically approved

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Siljeström, Sandra

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SP Kemi Material och Ytor
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