“Q-Feed”—An Effective Solution for the Free-Riding Problem in Unstructured P2P Networks

Table 2

Parameters collected from a neighbour in the normal state.

PN:	Number of query requests originated from a peer P to a neighbour N
ON:	Number of query requests received from other neighbours and forwarded by P to neighbour N
PNHIT:	Number of query hits from neighbour N for queries originated from peer P
ONHIT:	Number of query hits from other neighbours for queries forwarded by P to neighbour N
NF:	Number of files (objects) hosted in each neighbour
NR:	Number of files replicated to a neighbour N by P
NA:	Number of replicated files actually present at time t in neighbour N
AvgR:	Average number of results per query for the requests sent to N for the period
NGQ:	number of queries originated from neighbour N towards P
NGHIT:	number of hits for queries originated from N through P (including hits at P)