Department of Economics and Business Economics

Multivariate Factorizable Expectile Regression with Application to fMRI Data

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A multivariate expectile regression model is proposed to analyze the tail events of large cross-sectional and spatial data, where the tail events are linked by a latent factor structure. The computational advantage of the method is demonstrated, and the estimation risk is analyzed for every fixed number of iteration and fixed sample size, when the latent factors are either exactly or approximately sparse. The proposed method is applied on the functional magnetic resonance imaging (fMRI) data taken during an experiment of investment decisions making. It is shown that the negative extreme blood oxygenation level dependent (BOLD) responses may be relevant to the risk preferences.

Original languageEnglish
JournalComputational Statistics & Data Analysis
Volume121
Pages (from-to)1-19
Number of pages19
ISSN0167-9473
DOIs
Publication statusPublished - 2018
Externally publishedYes

    Research areas

  • Expectile regression, Factor analysis, Functional magnetic resonance imaging, Multivariate regression, Risk preference

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