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Usmile  

Threshold-Free Class-Specific Comparison of Binary Classifiers
View on CRAN: Click here


Download and install Usmile package within the R console
Install from CRAN:
install.packages("Usmile")

Install from Github:
library("remotes")
install_github("cran/Usmile")

Install by package version:
library("remotes")
install_version("Usmile", "0.2.0")



Attach the package and use:
library("Usmile")
Maintained by
Barbara Więckowska
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2026-08-08
Latest Update: 2026-08-08
Description:
Implements the U-smile methodology for threshold-free, class-specific comparison of probabilistic binary classifiers. The package quantifies prediction improvement and worsening separately for non-events and events using the Brier alteration (BA), relative Brier (RB), improvement proportion (I) coefficients, and relative likelihood ratio (rLR) coefficients, and provides U-smile, prediction improvement-worsening, receiver operating characteristic, and precision-recall plots. The original U-smile framework is described in Kubiak et al. (2024) <doi:10.1371/journal.pone.0303276>, its three-level extension for imbalanced binary classification in Wieckowska et al. (2025) <doi:10.1371/journal.pone.0321661>, and the likelihood-based extension in Wieckowska and Guzik (2026) <doi:10.1038/s41598-026-40545-z>.
How to cite:
Barbara Więckowska (2026). Usmile: Threshold-Free Class-Specific Comparison of Binary Classifiers. R package version 0.2.0, https://cran.r-project.org/web/packages/Usmile. Accessed 02 Nov. 2026.
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Complete documentation for Usmile
Functions, R codes and Examples using the Usmile R package
Full Usmile package functions and examples
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