Before revision:  The intent is to identify the feasibility of a floorplan topology of the given design netlist by estimating routability, routed net length and the number of vias while taking into account global congestion scenario across the layout.
After revision:  The intent is to identify the feasibility of a floorplan topology of a given design by estimating routability, routed net length and the number of vias while taking into account global congestion scenario across the layout.