Simulate mis-specifications

simulate certen \(rate\) mis-specifications in the Q-matrix.

sim.MQ(Q, rate, verbose = TRUE)

Arguments

Q

The Q-matrix (sim.Q) that need to simulate mis-specifications.

rate

The pecentage of mis-specifications in the\(Q\).

verbose

Logical indicating to print information or not. Default is TRUE

Value

An object of class \(matrix\).

Author

Haijiang Qin <Haijiang133@outlook.com>

Examples

library(Qval)

set.seed(123)

Q <- sim.Q(5, 10)
print(Q)
#>         A1 A2 A3 A4 A5
#> item 1   0  0  1  0  0
#> item 2   0  0  0  0  1
#> item 3   0  1  0  0  0
#> item 4   0  0  1  0  0
#> item 5   1  0  0  0  0
#> item 6   0  0  0  1  0
#> item 7   1  0  0  0  0
#> item 8   0  1  0  0  0
#> item 9   0  0  0  0  1
#> item 10  0  0  0  1  0

MQ <- sim.MQ(Q, 0.1)
#> rate of mis-specifications =  0.1 
#>  rate of  over-specifications =  0.08 
#>  rate of under-specifications =  0.02 
print(MQ)
#>         A1 A2 A3 A4 A5
#> item 1   0  1  1  0  0
#> item 2   0  0  0  0  1
#> item 3   0  1  0  0  0
#> item 4   0  0  1  0  0
#> item 5   0  0  1  0  1
#> item 6   0  0  0  1  0
#> item 7   1  0  0  0  0
#> item 8   0  1  0  0  0
#> item 9   1  0  0  0  1
#> item 10  0  0  0  1  0