createGroup {autoRasch} | R Documentation |
This function automatically create a mapping matrix based on the existing DIF inducing covariates.
createGroup(backInfo, idxUsed = NULL, contMethod = c("mean", "median"))
backInfo |
A matrix of person background information (e.g., gender, country, age, etc); |
idxUsed |
The column number of |
contMethod |
The method of how to handle a continuous variable (e.g., mean, median). This parameter is passing a function used to split the variable into binary. The default is |
A binary matrix that maps respondents to the groups that the respondents belongs to.