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Lirias
Article . 2012
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Journal of Chemometrics
Article . 2012 . Peer-reviewed
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Robust PARAFAC for incomplete data

Authors: Hubert, Mia; Van Kerckhoven, Johan; Verdonck, Tim;

Robust PARAFAC for incomplete data

Abstract

Different methods exist to explore multiway data. In this article, we focus on the widely used PARAFAC (parallel factor analysis) model, which expresses multiway data in a more compact way without ignoring the underlying complex structure. An alternating least squares procedure is typically used to fit the PARAFAC model. It is, however, well known that least squares techniques are very sensitive to outliers, and hence, the PARAFAC model as a whole is a nonrobust method. Therefore a robust alternative, which can deal with fully observed data possibly contaminated by outlying samples, has already been proposed in literature. In this paper, we present an approach to perform PARAFAC on data that contain both outlying cases and missing elements. A simulation study shows the good performance of our methodology. In particular, we can apply our method on a dataset in which scattering is detected and replaced with missing values. This is illustrated on a real data example. Copyright © 2012 John Wiley & Sons, Ltd.

Country
Belgium
Keywords

Mathematics, Interdisciplinary Applications, Technology, incomplete data, 3401 Analytical chemistry, OUTLIERS, principal component analysis, Statistics & Probability, robustness, Computer Science, Artificial Intelligence, MISSING ELEMENTS, Analytical Chemistry, FLUORESCENCE DATA, Automation & Control Systems, REGRESSION, Instruments & Instrumentation, Science & Technology, Chemistry, Analytical, MODEL, Chemistry, Physical Sciences, Computer Science, multiway, expectation maximization, PRINCIPAL COMPONENT ANALYSIS, 0301 Analytical Chemistry, Mathematics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
30
Top 10%
Top 10%
Top 10%
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