"FP-Growth Parameters"

Hello,

i  have a problem in understanding what the following Parameters of the FP-Growth-Operator are for ???

- positive value

-  max items

- must contain

I have read the Descriptions of the Operatore but dont understand it fully due to my bad english. And i have already used it and couldnt find out by comparing the results of different runs.
I would be glad if someone could help me with that. Maybe in German : ) ?


Thanks in Advance