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