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时间:2019-08-13
《[1970]Some Comments from a Numerical Analyst》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、SomeCommentsfromaNumericalAnalystJ.H.WILKINSONNationalPhysicalLaboratoryTeddington,Middlesex,EnglandAdescriptionisgivenoflifewithA.M.TuringattheNationalPhysicalLaboratoryintheearlydaysofthedevelopmentofelectroniccomputers(1946-1948).Thepresentmoodofpessimismamongnumeric
2、alanalystsresultingfromdifficultrelationshipswithcomputerscientistsandmathematiciansisdiscussed.Itissuggestedthatinlightofpastandpresentperformancethispessimismisunjustifiedandisthemainenemyofprogressinnumericalmathematics.Someachievementsinthefieldsofmatrixcomputations
3、anderroranalysisarediscussedandlikelychangesinthedirectionofresearchinnumericalanalysisaresketched.IntroductionWhenatlastIrecoveredfromthefeelingofshockedelationatbeinginvitedtogivethe1970TuringAwardLecture,IbecameawarethatImustindeedprepareanappropriatelecture.Thereapp
4、earstobeatraditionthataTuringLecturershoulddecideforhimselfwhatisexpectedfromhim,andprobablyforthisreasonpreviouslectureshavedifferedconsiderablyinstyleandcontent.However,itwasmadequiteclearthatIwastogiveanafter-luncheonspeechandthatIwouldnothavethebenefitofanoverheadpr
5、ojectororablackboard.Authordeceased,October1986.Addressatthattime:DepartmentofComputerScience,StanfordUniversity,Stanford,CA94305.243AlthoughIhavebeenassociatedwithhighspeedcomputerssincethepioneeringdays,mymainclaim,suchasitis,tothehonorofgivingthe1970lecturerestsonmyw
6、orkasanumericalanalyst,particularlyinthefieldoferroranalysis.Astudyoftheprogramforthismeetingrevealedthatnumericalanalysiswasconspicuousbyitsabsence,andaccordinglyIfeltthatitwouldbeinappropriatetopreparearatherheavydiscourseonroundingerrors;indeedIdoubtwhetheritwouldbea
7、suitabletopicforanafter-luncheonspeechinanyset-ting.Idecidedthereforetomakesomeratherpersonalcommentsbasedonmyexperienceasanumericalanalystoverthelasttwenty-fiveyears.ThereisoneimportantrespectinwhichitisreasonablyprobablethatIshalloccupyauniquepositionamongTuringLectur
8、ers.MauriceWilkes,givingthe1967'IhringLectureremarkedthatitwasunlikelythatmanyofthosewhofollowedhimwouldbepeop
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