Composite Indices Based on Partial Least Squares

Jisu Yoon, Stephan Klasen, Axel Dreher and Tatyana Krivobokova
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Jisu Yoon: Georg-August-University Göttingen
Tatyana Krivobokova: Georg-August-University Göttingen

No 171, Courant Research Centre: Poverty, Equity and Growth - Discussion Papers from Courant Research Centre PEG

Abstract: In this paper, we compare Principal Component Analysis (PCA) and Partial Least Squares (PLS) methods to generate weights for composite indices. In this context we also consider various treatments of non-metric variables when constructing such composite indices. Using simulation studies we find that dummy coding for non-metric variables yields satisfactory performance compared to more sophisticated statistical procedures. In our applications we illustrate how PLS can generate weights that differ substantially from those obtained with PCA, increasing the composite indices' predictive performance for the outcome variable considered.

Keywords: Principal Component Analysis; PCA; Partial Least Squares; PLS; non-metric variables; wealth index; globalization (search for similar items in EconPapers)
JEL-codes: C15 C43 F63 R20 (search for similar items in EconPapers)
Date: 2015-03-24
New Economics Papers: this item is included in nep-ecm
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Persistent link: https://EconPapers.repec.org/RePEc:got:gotcrc:171

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