computational thinking 计算思维 周以真.pdf

computational thinking 计算思维 周以真.pdf

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时间:2020-03-05

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1、ViewpointJeannetteM.WingComputationalThinkingItrepresentsauniversallyapplicableattitudeandskillseteveryone,notjustcomputerscientists,wouldbeeagertolearnanduse.omputationalthinkingcisely.Statingthedifficultyofaproblemaccountsbuildsonthepowerandfortheunderlyingpowerofthemachine—thecom-Climitsofcompu

2、tingputingdevicethatwillrunthesolution.Wemustprocesses,whethertheyareexe-considerthemachine’sinstructionset,itsresourcecutedbyahumanorbyaconstraints,anditsoperatingenvironment.machine.ComputationalInsolvingaproblemefficiently,wemightfurthermethodsandmodelsgiveusaskwhetheranapproximatesolutionisgoo

3、dthecouragetosolveprob-enough,whetherwecanuserandomizationtoourlemsanddesignsystemsthatnooneofuswouldadvantage,andwhetherfalsepositivesorfalsenega-becapableoftacklingalone.Computationalthink-tivesareallowed.Computationalthinkingisrefor-ingconfrontstheriddleofmachineintelligence:mulatingaseeminglyd

4、ifficultproblemintooneweWhatcanhumansdobetterthancomputers?andknowhowtosolve,perhapsbyreduction,embed-Whatcancomputersdobetterthanhumans?Mostding,transformation,orsimulation.fundamentallyitaddressesthequestion:WhatisComputationalthinkingisthinkingrecursively.Itcomputable?Today,weknowonlypartsofthe

5、isparallelprocessing.Itisinterpretingcodeasdataanswerstosuchquestions.anddataascode.Itistypecheckingasthegeneral-Computationalthinkingisafundamentalskillforizationofdimensionalanalysis.Itisrecognizingeveryone,notjustforcomputerscientists.Toread-boththevirtuesandthedangersofaliasing,orgiv-ing,writi

6、ng,andarithmetic,weshouldaddcompu-ingsomeoneorsomethingmorethanonename.Ittationalthinkingtoeverychild’sanalyticalability.isrecognizingboththecostandpowerofindirectJustastheprintingpressfacilitatedthespreadoftheaddressingandprocedurecall.Itisjudgingapro-threeRs,whatisappropriatelyincestuousaboutthi

7、sgramnotjustforcorrectnessandefficiencybutforvisionisthatcomputingandcomputersfacilitatetheaesthetics,andasystem’sdesignforsimplicityandspreadofcomputationalthinking.elegance.Computationalthinkinginvolvessolvingp

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