Groups candidate notes by the conversation they came from, so each note is judged against its own
conversation, as the gate was measured: one conversation per decision state. A note whose
sourceConversationId names none of the conversations belongs to the only conversation when there
is one; with several, it is unattributed, and must not be judged against another conversation.
Groups candidate notes by the conversation they came from, so each note is judged against its own conversation, as the gate was measured: one conversation per decision state. A note whose
sourceConversationIdnames none of the conversations belongs to the only conversation when there is one; with several, it is unattributed, and must not be judged against another conversation.