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1、KIVIATGRAPHS-CONVENTIONSAND"FIGURESOFMERIT"byMichaelFMorris*OnceinaverygreatwhileanideacomesCONVENTIONSalongthatquicklycapturesmanyimagina-tions.Thecirculargraphictechniquepro-I.SelectanevennumberofperformanceposednearlytwoyearsagobyPhilKiviat,.indicators,halfofwhichalocallyre
2、gardedourillustriousChairman,andveryappro-as"good"whentheyincreaseduetotuningpriatelynamed"KiviatGraphs"byourerst-efforts,andhalfofwhichareregardedaswhile(andsorelymissed)]'SoftwareEmpiri-"bad"(or"good"whentheydecrease).cist,"KenKolence,isoneoftheseideas.2.Divideacircleintoasm
3、anysymmet-KiviatGraphsallowsuchrapidcommuni-ricalsegmentsasthereareperformancein-cationofinformation,thattheyhavebeendicators,beginningwithaverticalaxisaboontothosewhomustmakepointsaboutfromthecircle'scentertotheuppermosttheperformanceofcomputersystems.Thepointonthecircle'sarc
4、.LarchissueofPerformanceEvaluationRe-view(Voi3,NoI)containedtwoexcellent3.Numberthetopverticalaxis"I"andexamples**ofthecommunicabilityoftech-numbertherestoftheaxessequentiallynicaldatathatcanbemadepossiblethrougharoundthecircle(clockwiseseemsthemosttheapplicationofKiviatGraphs
5、.Unfortun-populardirection,butthisisnotrelevantately,bothoftheseapplicationsdeparttotheseconventions).fromtheminimal"conventions"-forapplyingthesegraphsthatweredevelopedandpropa-4.Plotthe"good"indicatorsontheodd-gatedbyFEDSIM(theFederalComputerPer-numberedaxesandthe"bad"indica
6、torsonformanceEvaluationandSimulationCenter).theeven-numberedaxes.ThefaultforsuchdeparturescertainlyENDOFCONVENTIONSbelongstOthoseofuswhowerewithFEDSIMduringtheearlydevelopmentefforts.Wesimplydidn'tgetthewordoutclearlye-Asthedefinitionoftheseconventionsnough,stronglyenough,and
7、earlyenough.wasateameffortatFEDSIM,itisnotpos-Oneoftheearlyarticlesthatattemptedsibletosaywhowasresponsibleforthem,toexplain"conventions'~forusingKiviat"butRuthKent,ahardwaremonitorspecial-GraphswaswrittenbyA1PomerantzandmeistatFEDSIM,wastheprimaryanalystforfortheOctober3,1973
8、,issueofComputer-earlyworkonKiviatGraphsatFEDSIM.Soworld.Alth
