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flexmet (version 1.1)

Flexible Latent Trait Metrics using the Filtered Monotonic Polynomial Item Response Model

Description

Application of the filtered monotonic polynomial (FMP) item response model to flexibly fit item response models. The package includes tools that allow the item response model to be build on any monotonic transformation of the latent trait metric, as described by Feuerstahler (2019) .

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Version

Install

install.packages('flexmet')

Monthly Downloads

154

Version

1.1

License

GPL-3

Maintainer

Leah Feuerstahler

Last Published

July 13th, 2021

Functions in flexmet (1.1)

b2greek

Find the Greek-Letter Parameterization corresponding to a b Vector of Item Parameters
rimse

Root Integrated Mean Squared Difference Between FMP IRFs
inv_poly

Polynomial Functions
iif_fmp

FMP Item Information Function
fmp

Estimate FMP Item Parameters
linking

Linear and Nonlinear Item Parameter Linking
greek2b

Find the b Vector from a Greek-Letter Parameterization of Item Parameters.
get_surrogates

Find Theta Surrogates
int_mat

Numerical Integration Matrix
sim_bmat

Randomly Generate FMP Parameters
irf_fmp

FMP Item Response Function
sim_data

Simulate FMP Data
transform_b

Transform FMP Item Parameters
th_est_ml

Latent Trait Estimation