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Gallo, Michele; Trendafilov, Nickolay and Buccianti, Antonella
(2016).
DOI: https://doi.org/10.1007/s10651-016-0346-y
Abstract
The geochemistry of floodplain sediments is fundamental to monitor
environmental changes and to quantify their contribution to natural and anthropic processes. A floodplain sediment composition is a vector of positive elements which sum to a fixed constant. The analysis of high-dimensional compositions requires methods that produce results involving only a small portion of the original variables. On the other hand, the analysis must take into account the additional constraints specific to compositions. With the purpose of studying these problems, a new procedure for sparse PCA is proposed on European floodplain sediment samples.
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About
- Item ORO ID
- 49288
- Item Type
- Journal Item
- ISSN
- 1352-8505
- Keywords
- CoDa; Logratios; Steepest descent; Stiefel manifold
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Mathematics and Statistics
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2016 Springer Science+Business Media New York
- Depositing User
- Nickolay Trendafilov