get_ability_parameter_estimates: Feed forward response sets through the encoder, which outputs...
In converseg/ML2Pvae: Variational Autoencoder Models for IRT Parameter Estimation

Description Usage Arguments Value Examples

View source: R/get_parameter_estimates.R

Feed forward response sets through the encoder, which outputs student ability estimates

1	get_ability_parameter_estimates(encoder, responses)

`encoder`	a trained keras model; should be the encoder returned from either `build_vae_independent()` or `build_vae_correlated`
`responses`	a `num_students` by `num_items` matrix of binary responses, as used in training

a list where the first entry contains student ability estimates and the second entry holds the variance (or covariance matrix) of those estimates

data <- matrix(c(1,1,0,0,1,0,1,1,0,1,1,0), nrow = 3, ncol = 4)
Q <- matrix(c(1,0,1,1,0,1,1,0), nrow = 2, ncol = 4)
models <- build_vae_independent(4, 2, Q, model_type = 2)
encoder <- models[[1]]
ability_parameter_estimates_variances <- get_ability_parameter_estimates(encoder, data)
student_ability_est <- ability_parameter_estimates_variances[[1]]