Publications by Achim Zeileis
Robust covariance matrix estimation: sandwich 3.0-0, web page, JSS paper
Version 3.0-0 of the R package ‘sandwich’ for robust covariance matrix estimation (HC, HAC, clustered, panel, and bootstrap) is now available from CRAN, accompanied by a new web page and a paper in the Journal of Statistical Software (JSS). CRAN release of version 3.0-0 The sandwich package provides model-robust covariance matrix estimators f...
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Robust covariance matrix estimation: sandwich 3.0-0, web page, JSS paper
Version 3.0-0 of the R package ‘sandwich’ for robust covariance matrix estimation (HC, HAC, clustered, panel, and bootstrap) is now available from CRAN, accompanied by a new web page and a paper in the Journal of Statistical Software (JSS). CRAN release of version 3.0-0 The sandwich package provides model-robust covariance matrix estimators f...
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Tools for colors and palettes: colorspace 2.0-0, web page, and JSS paper
Version 2.0-0 of the R package ‘colorspace’ with tools for manipulating and assessing colors and palettes is now available from CRAN, accompanied by an updated web page, and a paper in the Journal of Statistical Software (JSS). Overview The R package colorspace provides a flexible toolbox for selecting individual colors or color palettes, ma...
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Tools for colors and palettes: colorspace 2.0-0, web page, and JSS paper
Version 2.0-0 of the R package ‘colorspace’ with tools for manipulating and assessing colors and palettes is now available from CRAN, accompanied by an updated web page, and a paper in the Journal of Statistical Software (JSS). Overview The R package colorspace provides a flexible toolbox for selecting individual colors or color palettes, ma...
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Tools for colors and palettes: colorspace 2.0-0, web page, and JSS paper
Version 2.0-0 of the R package ‘colorspace’ with tools for manipulating and assessing colors and palettes is now available from CRAN, accompanied by an updated web page, and a paper in the Journal of Statistical Software (JSS). Overview The R package colorspace provides a flexible toolbox for selecting individual colors or color palettes, ma...
2711 sym 2 img
Tools for colors and palettes: colorspace 2.0-0, web page, and JSS paper
Version 2.0-0 of the R package ‘colorspace’ with tools for manipulating and assessing colors and palettes is now available from CRAN, accompanied by an updated web page, and a paper in the Journal of Statistical Software (JSS). Overview The R package colorspace provides a flexible toolbox for selecting individual colors or color palettes, ma...
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Bias reduction in Poisson and Tobit regression
While it is well-known that data separation can cause infinite estimates in binary regression models, the same is also true for other models with a point mass at the bounday (typically at zero) such as Poisson and Tobit. It is shown why this happens and how it can be remedied with bias-reduced estimation, along with implementations in R. Citation...
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Network trees: networktree 1.0.0, web page, and Psychometrika paper
Version 1.0.0 (and actually 1.0.1) of the R package ‘networktree’ with tools for recursively partitioning covariance structures is now available from CRAN, accompanied by a paper in Psychometrika, and a dedicated software web page. Psychometrika paper Citation: Jones PJ, Mair P, Simon T, Zeileis A (2020). “Network Trees: A Method for Recur...
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ivreg: Two-stage least-squares regression with diagnostics
The ivreg function for instrumental variables regression had first been introduced in the AER package but is now developed and extended in its own package of the same name. This post provides a short overview and illustration. Package overview The ivreg package (by John Fox, Christian Kleiber, and Achim Zeileis) provides a comprehensive implement...
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Hybrid machine learning forecasts for the UEFA Euro 2020
Probabilistic forecasts for the UEFA Euro 2020 are obtained by using a hybrid model that combines data from four advanced statistical models through random forests. The favorite is France, followed by England and Spain. The UEFA Euro 2020 will finally take place across Europe from 11 June to 11 July 2021 (after a year of delay due to the Covid...
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