EVAM View Configuration Custom Fields and

[michaelward]

When configuring an AI Search application for a new Employee Center portal, and when reviewing how taxonomy topics are displayed relative to AI Search results, I came across two things for which I need an explanation. 

1.  The "Knowledge Search Results" view configuration in EVAM has custom fields (ai_search_teaser_title,ai_search_teaser_text, document_index,topics,child_docs) that include 'topics'.  This "topics" field is used in the view template as one of the headers displayed in a result.  I would expect to go to an AI search index and see this in field mappings.  In this case, go to "Knowledge Table" search index and a field mapping would show "topics".   Or, I would see a "topics" field actually on the table itself.  However, there is neither, so what simple magic trick am I missing here?   What is "topics" referencing here?  There is a simple "topic" field on the kb_knowledge table, but it refers to a simple String choice list.  

2.  In the same scenario, that being out of the box AI search configuraiton for Employee Center and dealing with taxonomy topics, a search result potentially has a "topics" facet when viewing results.  The facet fields for this configuration are "kb_knowledge.topic_level_0,sc_cat_item.topic_level_0,sn_lc_course_item.topic_level_0".  What is "topic_level_0"?  What is documented to explain this as it is not a field on the kb_knowledge table and there is nothing in the field mappings of any indexed source that I can see.  

This feels like something baked into the EVAM and/or AI Search configurations that is either not documented well (like EVAM view templates), or I am just flat missing some explanation somewhere. 

Thanks for the help. 

[Vinicius5]

Michael, did you have any solution for this? I'm having the same problem understanding this.