Vassals and Reputation?

[The Rook]

How do reputations work for the human player when they vassalise AIs? I know that when an AI has vassals, other AIs average the master's rep with their vassals when considering relations. Is this true for the human too? For example, if an AI is pleased with the human, and annoyed with the vassal, would their opinion of the human be pleased (as before), or cautious (an average of the two reps)?

Apologies in advance, I'm sure that the information for this must be somewhere on the forum. Aggressive late game warmongering is new to me.

Thanks