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IRTpp (version 0.2.6.1)

parameters.initialize: parameters.initialize

Description

Function to initialize model parameters

Usage

parameters.initialize(dataset, model, dims, method = "DEFAULT", red.items = T)

Arguments

dataset
The dataset to calculate the initial parameters. A matrix of 0's and 1's
model
The model with dimensions.
dims
To set the dimensions of use in the test.
method
Optional, "PCA" for multidimensional and "ANDRADE" for unidimensional are the current implementations.
red.items
Optional, default true. Reduces the dataset to the dataset without trash items.s

Value

Initial values for a estimation on the dataset and the model.

References

Andrade, D. F. , Tavares, H. R. y Valle, R. C. (2000). Teoria da resposta ao Item : Conceitos e Aplicacoes. SINAPE : Caxambu, MG