The Part-Of-Speech Tagging Guidelines for the PennChineseTreebank(3.0) uses several acronyms without defining them. I am a hobbyist student of Chinese linguistics as part of my study of Chinese.
I cannot figure out what MSP stands for. They say that MSPs include 所，以，而，＆ 来。 From the examples given, I think P stands for particle, S may stand for structural or sentence, and M might stand for medial. Other than P, these are just my guesses.
I would love any help.