#!/usr/bin/python __all__ = ["calculateDefects"] attributes = {} attributes['sf'] = ('prec','flex','resl','team','pmat') attributes['em'] = ('rely','data','ruse','docu','cplx', 'time','stor','pvol','acap','pcap', 'pcon','aexp','pexp','ltex','tool', 'site','sced') attributes['dr'] = ('aa','pr','etat') lookup_table = {} lookup_table['requirements'] = {} #XL:0 VL:1 L :2 N :3 H :4 VH:5 XH:6 lookup_table['requirements']['sf'] = {'prec': (None, 1.43, 1.22, 1.00, 0.92, 0.84, 0.70), 'flex': (None, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00), 'resl': (None, 1.32, 1.16, 1.00, 0.94, 0.87, 0.76), 'team': (None, 1.34, 1.17, 1.00, 0.94, 0.87, 0.75), 'pmat': (None, 1.38, 1.19, 1.00, 0.93, 0.85, 0.73)} lookup_table['requirements']['em'] = {'rely': (None, 1.43, 1.22, 1.00, 0.85, 0.70, None), 'data': (None, None, 0.93, 1.00, 1.04, 1.07, None), 'ruse': (None, None, 0.95, 1.00, 1.02, 1.03, 1.05), 'docu': (None, 1.16, 1.08, 1.00, 0.93, 0.86, None), 'cplx': (None, 0.76, 0.88, 1.00, 1.10, 1.21, 1.32), 'time': (None, None, None, 1.00, 1.03, 1.05, 1.08), 'stor': (None, None, None, 1.00, 1.03, 1.05, 1.08), 'pvol': (None, None, 0.86, 1.00, 1.05, 1.10, 1.16), 'acap': (None, 1.33, 1.17, 1.00, 0.87, 0.75, None), 'pcap': (None, 1.00, 1.00, 1.00, 1.00, 1.00, None), 'pcon': (None, 1.22, 1.11, 1.00, 0.91, 0.82, None), 'aexp': (None, 1.24, 1.12, 1.00, 0.91, 0.81, None), 'pexp': (None, 1.11, 1.05, 1.00, 0.95, 0.90, None), 'ltex': (None, 1.07, 1.04, 1.00, 0.97, 0.93, None), 'tool': (None, 1.09, 1.05, 1.00, 0.96, 0.92, None), 'site': (None, 1.20, 1.10, 1.00, 0.95, 0.89, 0.83), 'sced': (None, 1.18, 1.09, 1.00, 0.92, 0.85, None)} lookup_table['requirements']['dr'] = {'aa' : (None, 0.00, 0.00, 0.10, 0.27, 0.34, 0.40), 'pr' : (None, 0.00, 0.25, 0.40, 0.50, 0.58, 0.70), 'etat': (None, 0.00, 0.23, 0.40, 0.50, 0.57, 0.60)} lookup_table['design'] = {} #XL VL L N H VH XH lookup_table['design']['sf'] = {'prec': (None, 1.34, 1.17, 1.00, 0.94, 0.87, 0.75), 'flex': (None, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00), 'resl': (None, 1.43, 1.22, 1.00, 0.92, 0.84, 0.70), 'team': (None, 1.26, 1.13, 1.00, 0.95, 0.90, 0.80), 'pmat': (None, 1.65, 1.33, 1.00, 0.89, 0.78, 0.61)} lookup_table['design']['em'] = {'rely': (None, 1.45, 1.23, 1.00, 0.85, 0.69, None), 'data': (None, None, 0.91, 1.00, 1.05, 1.10, None), 'ruse': (None, None, 0.98, 1.00, 1.00, 1.01, 1.02), 'docu': (None, 1.18, 1.09, 1.00, 0.93, 0.85, None), 'cplx': (None, 0.71, 0.86, 1.00, 1.13, 1.27, 1.41), 'time': (None, None, None, 1.00, 1.06, 1.13, 1.20), 'stor': (None, None, None, 1.00, 1.06, 1.12, 1.18), 'pvol': (None, None, 0.83, 1.00, 1.06, 1.13, 1.20), 'acap': (None, 1.20, 1.10, 1.00, 0.91, 0.83, None), 'pcap': (None, 1.17, 1.09, 1.00, 0.93, 0.85, None), 'pcon': (None, 1.25, 1.13, 1.00, 0.90, 0.80, None), 'aexp': (None, 1.22, 1.11, 1.00, 0.91, 0.82, None), 'pexp': (None, 1.17, 1.09, 1.00, 0.93, 0.86, None), 'ltex': (None, 1.13, 1.07, 1.00, 0.91, 0.88, None), 'tool': (None, 1.10, 1.05, 1.00, 0.96, 0.91, None), 'site': (None, 1.20, 1.10, 1.00, 0.95, 0.89, 0.83), 'sced': (None, 1.19, 1.10, 1.00, 0.92, 0.84, None)} lookup_table['design']['dr'] = {'aa' : (None, 0.00, 0.00, 0.13, 0.28, 0.44, 0.50), 'pr' : (None, 0.00, 0.28, 0.40, 0.54, 0.70, 0.78), 'etat': (None, 0.00, 0.23, 0.43, 0.54, 0.65, 0.70)} lookup_table['code'] = {} #XL VL L N H VH XH lookup_table['code']['sf'] = {'prec': (None, 1.24, 1.12, 1.00, 0.95, 0.90, 0.81), 'flex': (None, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00), 'resl': (None, 1.41, 1.21, 1.00, 0.92, 0.84, 0.71), 'team': (None, 1.18, 1.09, 1.00, 0.96, 0.92, 0.86), 'pmat': (None, 1.58, 1.30, 1.00, 0.90, 0.79, 0.63)} lookup_table['code']['em'] = {'rely': (None, 1.45, 1.23, 1.00, 0.85, 0.69, None), 'data': (None, None, 0.91, 1.00, 1.05, 1.10, None), 'ruse': (None, None, 0.98, 1.00, 1.00, 1.01, 1.02), 'docu': (None, 1.18, 1.09, 1.00, 0.92, 0.85, None), 'cplx': (None, 0.71, 0.86, 1.00, 1.13, 1.27, 1.41), 'time': (None, None, None, 1.00, 1.06, 1.13, 1.20), 'stor': (None, None, None, 1.00, 1.05, 1.10, 1.15), 'pvol': (None, None, 0.82, 1.00, 1.08, 1.15, 1.22), 'acap': (None, 1.11, 1.05, 1.00, 0.95, 0.90, None), 'pcap': (None, 1.32, 1.16, 1.00, 0.88, 0.76, None), 'pcon': (None, 1.30, 1.15, 1.00, 0.88, 0.77, None), 'aexp': (None, 1.13, 1.07, 1.00, 0.94, 0.88, None), 'pexp': (None, 1.16, 1.08, 1.00, 0.94, 0.86, None), 'ltex': (None, 1.22, 1.11, 1.00, 0.91, 0.82, None), 'tool': (None, 1.25, 1.13, 1.00, 0.90, 0.90, None), 'site': (None, 1.18, 1.09, 1.00, 0.95, 0.90, 0.85), 'sced': (None, 1.19, 1.10, 1.00, 0.92, 0.84, None)} lookup_table['code']['dr'] = {'aa' : (None, 0.00, 0.10, 0.20, 0.30, 0.48, 0.55), 'pr' : (None, 0.00, 0.30, 0.48, 0.60, 0.73, 0.83), 'etat': (None, 0.00, 0.38, 0.58, 0.69, 0.78, 0.88)} defects_introduced_stage_weight = {'requirements':10.0, 'design':20.0, 'code':30.0} stages = ('requirements', 'design', 'code') def calculateDefectsIntroduced(stage, attribute_values): '''calculate defects introduced for a specifed stage based on attribute_values''' return defects_introduced_stage_weight[stage]\ * attribute_values['sloc']/1000.0\ * reduce(lambda x, y: x*y, [lookup_table[stage]['sf'][attr][attribute_values[attr]] for attr in attributes['sf']])\ * reduce(lambda x, y: x*y, [lookup_table[stage]['em'][attr][attribute_values[attr]] for attr in attributes['em']]) def calculateDefectsRemovedPercentage(stage,attribute_values): '''calculate defects removed percentage for a specifed stage based on attribute_values''' return reduce(lambda x, y: x*y, [1-lookup_table[stage]['dr'][attr][attribute_values[attr]] for attr in attributes['dr']]) def calculateDefectsNoConvert(attribute_values): '''calculates defects withon convert attribute_values''' return reduce(lambda x, y: x+y, [calculateDefectsIntroduced(s,attribute_values)\ *calculateDefectsRemovedPercentage(s,attribute_values)\ for s in stages]) def convertAttributeValues (cocomo_values): '''Convert attributes values dictionary to expected attributes and values''' converted_cocomo_values = cocomo_values.copy() converted_cocomo_values['sloc'] = cocomo_values['kloc']*1000 return converted_cocomo_values def calculateDefects(attribute_values): '''Calculate defects based on attribute values after converting them''' return { 'defects': calculateDefectsNoConvert(convertAttributeValues(attribute_values)) }