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A serial extension of multiblock PLS

✍ Scribed by Anders Berglund; Svante Wold

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 81 KB
Volume: 13
Category: Article
ISSN: 0886-9383
DOI: 10.1002/(sici)1099-128x(199905/08)13:3/4<461::aid-cem555>3.0.co;2-b

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✦ Synopsis

A novel multiblock PLS algorithm called S-PLS (serial PLS) is presented. S-PLS models the separate predictor blocks serially, making it a supplement to hierarchical PLS. In the S-PLS algorithm the predictor blocks are connected only via the response Y. The block models are calculated using the Y residuals from the previous block model. This allows for an independent interpretation of the separate block models. In each block model the classical PLS algorithm is used. The principles of S-PLS are demonstrated on two chemical applications. In the first example, which is non-linear, S-PLS makes it possible to separate the linear and non-linear parts in the model. The second example illustrates how a model with two predictor blocks can be analysed with S-PLS.

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