R package KernSmoothIRT: Nonparametric Item Response Theory. This package fits nonparametric item and option characteristic curves using kernel smoothing. It allows for optimal selection of the smoothing bandwidth using cross-validation and a variety of exploratory plotting tools.
References in zbMATH (referenced in 1 article )
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- Falk, Carl F.; Cai, Li: Maximum marginal likelihood estimation of a monotonic polynomial generalized partial credit model with applications to multiple group analysis (2016)