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Personalized treatment effects with model4you

May 15, 2019
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Personalized treatment effects with model4you

Personalized treatment effects can be estimated easily with model-based trees and model-based random forests using the R package model4you. Citation Heidi Seibold, Achim Zeileis, Torsten Hothorn (2019). “model4you: An R Packa...

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At the end of the rainbow

March 6, 2019
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At the end of the rainbow

Fully saturated RGB rainbow colors are still widely used in scientific visualizations despite their widely-recognized disadvantages. A recent wild-caught example is presented, showing its limitations along with a better HCL-based alternative ...

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Online color apps at hclwizard.org

February 14, 2019
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Online color apps at hclwizard.org

The hclwizard.org web page has been relaunched, hosting three online color apps based on the HCL (Hue-Chroma-Luminance) color model: a palette constructor, a color vision deficiency emulator, and a color picker. HCL wizard: Some...

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Spatial lag model trees

January 20, 2019
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Spatial lag model trees

Economic growth models are recursively partitioned to assess heterogeneity in growth and convergence across EU regions while adjusting for spatial dependencies. Accompanied by R package lagsarlmtree, combining partykit::mob and spdep::lagsarl...

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colorspace: New Tools for Colors and Palettes

January 13, 2019
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colorspace: New Tools for Colors and Palettes

A major update (version 1.4.0) of the R package colorspace has been released to CRAN, enhancing many of the package's capabilities, e.g., more refined palettes, named palettes, ggplot2 color scales, visualizations for assessing palettes, shin...

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Minimum CRPS vs. maximum likelihood

December 16, 2018
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Minimum CRPS vs. maximum likelihood

In a new paper in Monthly Weather Review, minimum CRPS and maximum likelihood estimation are compared for fitting heteroscedastic (or nonhomogenous) regression models under different response distributions. Minimum CRPS is more robust to dist...

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Partially additive (generalized) linear model trees

October 7, 2018
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Partially additive (generalized) linear model trees

The PALM tree algorithm for partially additive (generalized) linear model trees is introduced along with the R package palmtree. One potential application is modeling of treatment-subgroup interactions while adjusting for global additive effe...

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Thunderstorm forecasting with GAMs

September 15, 2018
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Thunderstorm forecasting with GAMs

Boosted binary generalized additive models (GAMs) with stability selection and corresponding MCMC-based credibility intervals are discussed in a new MWR paper as a probabilistic forecasting method for the occurrence of thunderstorms. ...

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MPT trees published in BRM

August 26, 2018
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MPT trees published in BRM

Multinomial processing trees are recursively partitioned to capture heterogeneity in latent cognitive processing steps. Accompanied by the R function mpttree in the psychotree package, combining partykit::mob and psychotools::mpt. ...

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Clustered Covariances in sandwich 2.5-0

August 19, 2018
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Clustered Covariances in sandwich 2.5-0

Version 2.5-0 of the R package 'sandwich' is available from CRAN now with enhanced object-oriented clustered covariances (for lm, glm, survreg, polr, hurdle, zeroinfl, betareg, ...). The software and corresponding vignette have been improved ...

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