This function fits a continuous Item Response Theory (IRT) model to the algorithm performance data. The function EstCRMitem in the R package EstCRM is updated to accommodate negative discrimination.
Usage
cirtmodel(df, max.item = NULL, min.item = NULL)
Value
A list with the following components:
model
The IRT model.
anomalous
A binary value for each algorithm. It is set to 1 if an algorithm is anomalous. Otherwise it is set to 0.
consistency
The consistency of each algorithm.
difficulty_limit
The difficulty limit of each algorithm. A higher difficulty limit indicates that the algorithm can tackle harder problems.
Arguments
df
The performance data in a matrix or dataframe.
max.item
A vector with the maximum performance value for each algorithm.
min.item
A vector with the minimum performance value for each algorithm.