Category "multinomial"

Specifying Reference Category for Outcome Variable in Multinomial Logit Using SKlearn's LogisticRegression

I am trying to fit a multinomial logit model using LogisticRegression module from Sklearn. My outcome (y) has 4 levels. I need to specify one of these levels as

lrtest() not working: posthoc testing for multinomial with vglm() not working with lrtest()

I am running a multinomial analysis with vglm(). It all works, but then I try to follow the instructions from the following website (https://rcompanion.org/hand