I would like to use Partitioned model ( stratified model ) on my DSS (Free edition).
However, I can't use it.
It seems that when I use Partition model then it needs partitioned datasets. But I couldn't define partition to source datasets. Because Free edition doesn't support partition function.
That means Free edition can't use Partition model (Stratified model) ? Is my understanding is correct?
You are correct, partitioning is part of Dataiku's business and enterprise editions.
You can find more details on the different editions on https://www.dataiku.com/product/get-started/#compare-tables.
Hope it helps,