Initially, a distribution graph is constructed including the above mentioned nodes spanned out by {TAIL ~ logical links} assigned {HEAD ~ cost values} indicating the cost of transferring data between the associated adjacent nodes 
Initially , a distribution graph is constructed including the above mentioned nodes spanned out by { TAIL ~ logical links } assigned { HEAD ~ cost values } indicating the cost of transferring data between the associated adjacent nodes
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH