[LID] - Inquiry about the formula of Metrics

[liuying611]

Hi, I'm trying to understand the computing of LID, in the function get_linked_interaction_triple(path) line 26 why only return the interaction/type/id of the first hop using path[1]?

A similar question is about the function of get_path_type used for PTD line40 why takes the relation of the last hop, ignoring the path_type in the last hops? (if I understand the code right). Or do you have any formula details about the metrics anywhere? Looking forward to your reply.