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couplr  

Optimal Pairing and Matching via Linear Assignment
View on CRAN: Click here


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

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

Install by package version:
library("remotes")
install_version("couplr", "1.0.10")



Attach the package and use:
library("couplr")
Maintained by
Gilles Colling
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2026-01-21
Latest Update: 2026-01-21
Description:
Solves optimal pairing and matching problems using linear assignment algorithms. Provides implementations of the Hungarian method (Kuhn 1955) <doi:10.1002/nav.3800020109>, Jonker-Volgenant shortest path algorithm (Jonker and Volgenant 1987) <doi:10.1007/BF02278710>, Auction algorithm (Bertsekas 1988) <doi:10.1007/BF02186476>, cost-scaling (Goldberg and Kennedy 1995) <doi:10.1007/BF01585996>, scaling algorithms (Gabow and Tarjan 1989) <doi:10.1137/0218069>, push-relabel (Goldberg and Tarjan 1988) <doi:10.1145/48014.61051>, and Sinkhorn entropy-regularized transport (Cuturi 2013) <doi:10.48550/arxiv.1306.0895>. Designed for matching plots, sites, samples, or any pairwise optimization problem. Supports rectangular matrices, forbidden assignments, data frame inputs, batch solving, k-best solutions, and pixel-level image morphing for visualization. Includes automatic preprocessing with variable health checks, multiple scaling methods (standardized, range, robust), greedy matching algorithms, and comprehensive balance diagnostics for assessing match quality using standardized differences and distribution comparisons.
How to cite:
Gilles Colling (2026). couplr: Optimal Pairing and Matching via Linear Assignment. R package version 1.0.10, https://cran.r-project.org/web/packages/couplr. Accessed 21 Aug. 2026.
Previous versions and publish date:
(2026-07-25 23:00), 1.0.6 (2026-01-20 11:30), 1.0.8 (2026-01-21 08:40), 1.0.10 (2026-01-21 14:00), 1.1.0 (2026-03-03 12:30), 1.2.0 (2026-03-20 10:30), 1.2.1 (2026-03-20 17:50), 1.4.0 (2026-05-19 00:50), 1.4.1 (2026-05-23 13:00), 1.5.0 (2026-07-19 20:00)
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Complete documentation for couplr
Functions, R codes and Examples using the couplr R package
Full couplr package functions and examples
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