Accelerated Item Factor Analysis
Project description
XIFA: Accelerated Item Factor Analysis
xifa is a python package for conducting item factor analysis (IFA).
xifa is build on jax, a package for Autograd and XLA. Hence, xifa can run IFA on GPUs and TPUs to speed up the training process. That is why we call it Accelerated IFA.
In the current version (0.0.1), xifa supports ordinal data IFA with graded response model (GRM; Semejima, 1969) and generalized partial credit model (GPCM; Muraki, 1992).
For a tutorial, please see Big Five 50 Items Example.
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