Information-Theoretic Methods for Econometric Estimation R package infometrics version 0.3.0 Implements the class of Information-Theoretic (IT) estimators for econometric models, following the unified framework of Golan (2008) <doi:10.1561/0800000004>. Provides Generalized Maximum Entropy (GME) and Generalized Cross-Entropy (GCE) estimators for linear regression, instrumental variables, one-way error-component panel data, multinomial response, matrix balancing, and first-order Markov transition matrices, together with pure and noisy inverse-problem solvers. All estimators use the concentrated (dual) formulation for computational efficiency and report normalized-entropy, entropy-ratio, and Fano-bound diagnostics. Software Depends: R (>= 4.1.0) Imports: stats Suggests: bookdown, knitr, rmarkdown, testthat (>= 3.0.0) Ganbaatar Jambal <jg3169a@gmail.com> Comprehensive R Archive Network (CRAN) Ganbaatar Jambal [aut, cre] GPL-3 2026-09-10 application/tgz https://CRAN.R-project.org/package=infometrics doi:10.32614/CRAN.package.infometrics