Set parameter for the model — VI_MODEL$set

This function store the values in the environment and update their values in the closed form expression of y. However, if the parameter is not directly used by the closed form expression, user should override this method to correctly set the parameter.

Arguments

prm_name: List or Vector. Parameter character names.
prm_val: List or Vector. Parameter values.

Value

Return the object itself.

Examples


# Instantiate
x <- rand_uniform()
e <- rand_normal()
test <- vi_model(prm = list(a = 1, x = x, e = e),
                 prm_type = list(a = "o", x = "r", e = "r"),
                 formula = y ~ 1 + a * x + x^2 + e,
                 null_formula = y ~ x,
                 alt_formula = y ~ x + I(x^2))

test
#> 
#> ── <VI_MODEL object>
#> y = 1 + a * x + x^2 + e
#>  - x: <RAND_UNIFORM object>
#>    [a: 0, b: 1]
#>  - e: <RAND_NORMAL object>
#>    [mu: 0, sigma: 1]
#> Parameters:
#>  - a: 1 

test$set_prm("a", 2)

test
#> 
#> ── <VI_MODEL object>
#> y = 1 + a * x + x^2 + e
#>  - x: <RAND_UNIFORM object>
#>    [a: 0, b: 1]
#>  - e: <RAND_NORMAL object>
#>    [mu: 0, sigma: 1]
#> Parameters:
#>  - a: 2