## A Network Extraction Algorithm for the Network Aggregation ProblemDepartment of Civil Engineering, Northwestern University, 1982 - Network analysis (Planning) - 32 pages |

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aggre aggregate network aggregation process analysis cant link CN CN Compute congestion cutoff point definition of insignificant demand network equilibrium destination detailed network equilibrium flow levels equilibrium flow problem extract links extraction of links flow over link Frank-Wolfe algorithm gate Network Go to Step head nodes ieA-K insignificant links Iran iteration level of flow link k link number maximum equilibrium link maximum number network aggregation algorithm NETWORK AGGREGATION PROBLEM network aggregation schemes network design problem network element abstraction network element extraction NETWORK EXTRACTION ALGORITHM network links node j pointing nodes of link number of links O/D Table O/D trip matrix old entries type optimal original network preserve the level prespecified proposed algorithm result revised O/D trip rH rH rH ro ro ro shown in Figure Simultaneous link extraction subnetworks tail and head tion type III entry update the trip user equilibrium flow values vector of link