I am new to the platform and trying to develop a process to decode n-item "item k-NN" recommendation result so the real user and product recommendation information can be retrieved. The issue I have is that I do not know how to develop a "mapping table" around the model which uses "Item k-NN" model directly linked to "Apply Model" (for recommendation). the information is encoded. Does anyone can teach me how this can be done in terms of operator and parameters? I appreciate it greatly.