Implementations of Semi-Supervised Learning Approaches for Classification R package RSSL version 0.9.8 A collection of implementations of semi-supervised classifiers and methods to evaluate their performance. The package includes implementations of, among others, Implicitly Constrained Learning, Moment Constrained Learning, the Transductive SVM, Manifold regularization, Maximum Contrastive Pessimistic Likelihood estimation, S4VM and WellSVM. Software Depends: R(>= 2.10.0) Imports: methods, Rcpp, MASS, kernlab, quadprog, Matrix, dplyr, tidyr, ggplot2, reshape2, scales, cluster LinkingTo: Rcpp, RcppArmadillo Suggests: testthat, rmarkdown, SparseM, numDeriv, LiblineaR, covr Jesse Krijthe <jkrijthe@gmail.com> Comprehensive R Archive Network (CRAN) Jesse Krijthe [aut, cre] GPL (>= 2) 2025-10-21 application/tgz https://CRAN.R-project.org/package=RSSL doi:10.32614/CRAN.package.RSSL