Liberty NCX is characterize (simulate transistor-level netlist in spice simulator, like Hspice) each cell in the library, and generate .lib files based on the results of these simulation.
Liberty NCX reads cell descriptions from the seed library or cell template files, reads SPICE netlists and models, sets up SPICE simulations of the cells, runs the simulations using HSPICE or a compatible simulator, gathers the simulation results, generates the library cell characterization data, and writes out a .lib library file containing the newly characterized cells.
Extraction - Star-RC
Layout view (Milkyway CEL) - CustomDesigner LE (or from any layout editor -> GDSII -> Milkyway)
Abstract View (Milkyway FRAM) - it may comes from CustomDesigner, from CEL, from GDS or from LEF file.
You should read Milkyway Library Data Preparation User Guide (do not remember exact title of this UG).
I read the UG ,thank for the information,i finally found the flow to follow on my project which is characterizing a standard cell "asynchronous latch"
1.schematic ----->tool CDesigner SE
2.layout ----->tool CDesigner LE
3.LVS hERCULES
4.RC extraction Star RC
5.Post layout simulation.