Inacomposite-stepapproach,astepskiscomputedasthesumoftwocomponentsvkandhk.Thenormalcomponentvk,whichiscalledtheverticalstep,aimstoimprovethelinearizedfeasibility,whilethetangentialcomponenthk,whichisalsocalledhorizontalstep,concentratesonreducingamodelofthemeritfunctions.Asafiltermethod,itreducesboththeinfeasibilityandtheobjectivefunction.Thisisthesamepropertyofthesetwomethods.Inthispaper,oneconcernsthecomposite-steplikefilterapproach.Thatis,astepistangentialcomponenthkiftheinfeasibilityisreduced.Orelse,skisacompositestepcomposedofnormalcomponentVkandtangentialcomponenthk.
