{TAIL ~ The server} determines an interaction score for each of {HEAD ~ the interactions}, wherein each interaction score is based on a type of the respective one to one interaction and an age of the respective one to one interaction 
{ TAIL ~ The server } determines an interaction score for each of { HEAD ~ the interactions } , wherein each interaction score is based on a type of the respective one to one interaction and an age of the respective one to one interaction
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH