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mqqr: Multivariate Quantile-on-Quantile Regression

Implements Multivariate Quantile-on-Quantile Regression (m-QQR) of Sinha, Ghosh, Hussain, Nguyen and Das (2023) <doi:10.1016/j.eneco.2023.107021>, extending the bivariate Quantile-on-Quantile regression of Sim and Zhou (2015) <doi:10.1016/j.jbankfin.2015.01.013> to include exogenous moderators and controls with optional interaction terms. For each pair of quantile levels (theta of the response and tau of the regressor) the package fits a locally-weighted quantile regression of y on the principal regressor x, a lagged dependent variable, moderators Z and the x*Z interaction terms, using Gaussian kernel weights on the empirical cumulative distribution function (CDF) distance. Bootstrap standard errors and Koenker-Machado pseudo R-squared are reported. Visualisations include 'MATLAB'-style 'Parula' and 'Jet' 3D surfaces, heatmaps and contour plots through 'plotly'.

Version: 1.0.0
Depends: R (≥ 3.5.0)
Imports: quantreg (≥ 5.0), plotly (≥ 4.0.0), stats, utils, grDevices
Suggests: knitr, rmarkdown, testthat (≥ 3.0.0)
Published: 2026-06-01
DOI: 10.32614/CRAN.package.mqqr (may not be active yet)
Author: Merwan Roudane [aut, cre, cph], Avik Sinha [ctb] (Original m-QQR methodology), Nicholas Sim [ctb] (Original QQ regression methodology), Hongtao Zhou [ctb] (Original QQ regression methodology)
Maintainer: Merwan Roudane <merwanroudane920 at gmail.com>
BugReports: https://github.com/merwanroudane/multiqqr/issues
License: GPL-3
URL: https://github.com/merwanroudane/multiqqr
NeedsCompilation: no
Citation: mqqr citation info
Materials: NEWS
CRAN checks: mqqr results

Documentation:

Reference manual: mqqr.html , mqqr.pdf

Downloads:

Package source: mqqr_1.0.0.tar.gz
Windows binaries: r-devel: not available, r-release: not available, r-oldrel: not available
macOS binaries: r-release (arm64): mqqr_1.0.0.tgz, r-oldrel (arm64): mqqr_1.0.0.tgz, r-release (x86_64): mqqr_1.0.0.tgz, r-oldrel (x86_64): mqqr_1.0.0.tgz

Linking:

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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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