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Using regression makes extraction of shared variation in multiple datasets easy

Abstract

In many data analysis tasks it is important to understand the relationships between different datasets. Several methods exist for this task but many of them are limited to two datasets and linear relationships. In this paper, we propose a new efficient algorithm, termed cocoreg, for the extraction of variation common to all datasets in a given collection of arbitrary size. cocoreg extends redundancy analysis to more than two datasets, utilizing chains of regression functions to extract the shared variation in the original data space. The algorithm can be used with any linear or non-linear regression function, which makes it robust, straightforward, fast, and easy to implement and use. We empirically demonstrate the efficacy of shared variation extraction using the cocoreg algorithm on five artificial and three real datasets.

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Notes

  1. http://www.imf.org/external/np/res/commod/External_Data.xls

  2. http://www.imf.org/external/np/res/commod/index.aspx

  3. http://apps.who.int/gho/data/node.main.A867?lang=en

  4. http://headit-beta.ucsd.edu/studies/9d557882-a236-11e2-9420-0050563f2612

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Acknowledgments

This work was partly supported by the Revolution of Knowledge Work Project, funded by Tekes (Grants 40228/13 and 5159/31/2014), and in part by Academy of Finland (Finnish Centre of Excellence in Computational Research COIN, 251170; 26696).

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Correspondence to Jussi Korpela.

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Responsible editor: Thomas Gärtner, Mirco Nanni, Andrea Passerini and Celine Robardet.

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Korpela, J., Henelius, A., Ahonen, L. et al. Using regression makes extraction of shared variation in multiple datasets easy. Data Min Knowl Disc 30, 1112–1133 (2016). https://doi.org/10.1007/s10618-016-0465-y

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  • DOI: https://doi.org/10.1007/s10618-016-0465-y

Keywords

  • Shared variation
  • Multiple regression
  • Regression chains