BP算法，误差反向传播（ErrorBackPropagation,BP）算法。
BP算法的基本思想是，学习过程由信号的正向传播与误差的反向传播两个过程组成。
由于多层前馈网络的训练经常采用误差反向传播算法，人们也常把将多层前馈网络直接称为BP网络。
利用python代码实现BP神经网络。

浏览器出现以下问题：RightManagementAdd-onforInternetExplorer内容如下：Thefeatureyouaretryingtouseisonanetworkresourcethatisunavailable.clickoktotryagain,orenteranalternatepathtoaflodercontainingtheinstallationpackage'RMU.msi'intheboxbelow.Usesource:C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\IXP000.TMP\解决方法：下载RMUSetup.exe，安装即可

截取屏幕截屏解析bbin截图示例capture

Byapplyingsupportvectorregression,themodelingdataofriceleavescollectedinourstudyweregroupedintosampletrainingsetandtestset,andthreemachinelearningpredictionmodelsonricegrowingenvironmentagainstleafbladelength,widthandSPADvaluewereconstructed..

Theinfluenceofairturbulenceonthetransversewanderingofasinglefemtosecondlaserfilamentisstudiedbynumericalsimulation.Theresultsshowthattheaveragetransversedisplacementofthesinglefilamenthδriisproportionaltothesquarerootofturbulentstructureconstantandtherelationsbetweenhδriandthepropagationdistancecanbefitbyapowerfunction.Inaddition,byusinganaxiconasafocusingoptics,thewanderingofasinglefilamentissuggestedtobestrongertha

该数据库是通过使用商业设备对30名受试者进行实验而获得的，以部分满足博士学位的要求。
计算机科学候选人：Fernandez-FragaS.M.并由M.A.Aceves-Fernandez博士监督。
来自墨西哥克雷塔罗自治大学（UAQ）。
这些实验符合当地最高道德标准（我们大学提供的生物伦理学标准）和国际（世界卫生组织提供的文件），并由专业医师随时监督。

原则英文版，总页数为586页，是完整的，此版本是我付费在别的网站上下载的ThankyoufordownloadingthisSimonSchusterebookGetaFreeebookwhenyoujoinourmailinglist.Plus,getupdatesonnewreleases,dealsrecommendedreads,andmorefromSimonSchusterClickbelowtosignupandseetermsandconditionsCLICKHERETOSIGNUPAlreadyasubscriber?Provideyouremailagainsowecanregisterthisebookandsendyoumoreofwhatyouliketoread.YouwillcontinuetoreceiveexclusiveoffersinyourinboxPRINCIPLESRAYDALIOsiMonSCHUSTERNEWYORKLONDONTORONTOSYDNEYNEWDELHIPARTIW豆EREIMCOMIINGFRON1MyCalltoAdventure:1949-19672CrossingtheThreshold:1967-19793MyAbyss:1979-19824MyRoadofTrials:1983-19945TheUltimateBoon:1995-20106ReturningtheBoon:2011-20157MyLastYearandMyGreatestChallenge:2016-20178LookingBackfromaHigherLevelPARTIILIFEPRINCIPLES1EmbraceRealityandDealwithIt2Usethe5-StepProcesstoGetWhatYouWantOutofLife3BeRadicallyOpen-Minded4UnderstandThatPeopleAreWiredVeryDifferently5LearnHowtoMakeDecisionsEffectivelyLifePrinciples:PuttingItAllTogetherSummaryandTableoflifePrinciplesPARTIIIWORKPRINCIPLESSummaryandTableofWorkPrinciplesTOGETTHECULTURERIGHT1TrustinRadicalTruthandRadicalTransparency2CultivateMeaningfulWorkandMeaningfulRelationships3CreateaCultureinWhichItIsOkaytoMakeMistakesandUnacceptableNottoLearnoem4GetandStayinSync5BelievabilityWeightYourDecisionMaking6RecognizeHowtoGetBeyondDisagreementsTOGETTHEPEOPLERIGHT7RememberThattheWHOIsMoreImportantthantheWhat8HireRight,BecausethePenaltiesforHiringWrongAreHuge9ConstantlyTrain,Test,Evaluate,andSortPeopleTOBUILDANDEVOLVEYOURMACHINE10ManageasSomeoneOperatingaMachinetoAchieveagoal11PerceiveandDon'tTolerateproblems12DiagnoseProblemstoGetatTheirrootcauses13DesignImprovementstoYourMachinetoGetAroundYourProblems14DoWhatYouSetOuttodo15USeToolsandProtocolstoShapeHowWorkIsDone16AndforHeaven'sSakeDontOverlookGovernanceWorkPrinciples:PuttingItAllTogetherACKNOWLEDGMENTSABOUTTHEAUTHORCONCLUSIONAPPENDIX.TOOLSANDPROTOCOLSFORBRIDGEWATERSIDEAMERITOCRACYBIBLIOGRAPHYINDEXToBarbara.thehalfmewhohasmademewholeformorethanfortyyearsINTRODUCTIONBeforeibegintellingyouwhatIthink,IwanttoestablishthatI'ma"dumbshit'whodoesntknowmuchrelativetowhatineedtoknowWhateversuccessI'vehadinlifehashadmoretodowithmyknowinghowtodealwithmynotknowingthananythingIknow.ThemostimportantthingIlearnedisanapproachtolifebasedonprinciplesthathelpsmefindoutwhat'strueandwhattodoaboutitI'mpassingalongtheseprinciplesbecauseiamnowatthestageinmylifewhichIwanttohelpothersbesuccessfulratherthantobemoresuccessfulmyself.Becausetheseprincipleshavehelpedmeandotherssomuch,Iwanttosharethemwithyou.It'suptoyoutodecidehowvaluabletheyreallyareandwhat,ifanythingyouwanttodowiththemPrinciplesarefundamentaltruthsthatserveasthefoundationsforbehaviorthatgetsyouwhatyouwantoutoflife.TheycanbeappliedagainandagaininsimilarsituationstohelpyouachieveyourgoalsEveryday,eachofusisfacedwithablizzardofsituationswemustrespondto.Withoutprincipleswewouldbeforcedtoreacttoallthethingslifethrowsatusindividually,asifwewereexperiencingeachofthemforthefirsttime.Ifinsteadweclassifythesesituationsintotypesandhavegoodprinciplesfordealingwiththemwewillmakebetterdecisionsmorequicklyandhavebetterlivesasaresult.Havingagoodsetofprinciplesislikehavingagoodcollectionofrecipesforsuccess.Allsuccessfulpeopleoperatebyrinciplesthathelpthembesuccessful,thoughwhattheychoosetobesuccessfulatvariesenormouslysotheirprinciplesvarTobeprincipledmeanstoconsistentlyoperatewithprinciplesthatcanbeclearlyexplained.Unfortunately,mostpeoplecantdothat.Andit'sveryrareforpeopletowritetheirprinciplesdownandsharethemThatisashame.IwouldlovetoknowwhatprinciplesguidedAlbertEinstein,SteveJobsWinstonChurchill,LeonardodaVinci,andotherssoIcouldclearlyunderstandwhattheyweregoingafterandhowtheyachieveditandcouldcomparetheirdifferentapproaches.I'dliketoknowwhichprinciplesaremostimportanttothepoliticianswhowantmetovoteforthemandtoalltheotherpeoplewhosedecisionsaffectme.Dowehavecommonprinciplesthatbindustogether-asafamly,asacommunity,asanation,asfriendsacrossnations?O1dowehaveopposingprinciplesthatdivideus?whatarethey?letsbespecificThisisatimewhenitisespeciallyimportantforustobeclearaboutourprinciplesMyhopeisthatreadingthisbookwillpromptyouandotherstodiscoveryourownprinciplesfromwhereveryouthinkisbestandideallywritetheedown.Doingthatwillallowyouandotherstobeclearaboutwhatyourprinciplesareandunderstandeachotherbetter.Itwillallowyoutoretinethemasyouencountermoreexperiencesandtoreflectonthem,whichwillhelpyoumakebetterdecisionsandbebetterunderstoodHAVINGYOUROWNPRINCIPLESWecomebyourprinciplesindifferentways.Sometimeswegainthemthroughourownexperiencesandreflections.Sometimesweacceptthemfromothers,likeourparents,orweadoptholisticpackagesofprinciples,suchasthoseofreligionsandlegalframeworksBecauseweeachhaveourowngoalsandourownnatures,eachofusmustchooseourownprinciplestomatchthem.Whileitisntnecessarilyabadthingtouseothers'principles,adoptingprincipleswithoutgivingthemmuchthoughtcanexposeyoutotheriskofactinginwaysinconsistentwithyourgoalsandyournature.Atthesametime,you,likeme,probablydontknoweverythingyouneedtoknowandwouldbewisetoembracethatfact.Ifyoucanthinkforyourselfwhilebeingopen-mindedinaclearheadedwaytofindoutwhatisbestforyoutodo,andifyoucansummonupthecouragetodoityouwillmakethemostofyourlife.Ifyoucantdothat,youshouldreflectonwhythatis,becausethat'smostlikelyyourgreatestimpedimenttogettingmoreofwhatyouwantoutoflifeThatbringsmetomyfirstprincipleThinkforyourselftodecide1,whatyouwant,2ywhatistrue,and3,whatyoushoulddotoachieve#1inlightof#2anddothatwithhumilityandopen-mindednesssothatyouconsiderthebestthinkingavailabletoyou.Beingclearonyourprinciplesisimportantbecausetheywillaffectallaspectsofyourlife,manytimesaday.Forexample,whenyouenterintorelationshipswithothers,yourprinciplesandtheirprincipleswilldeterminehowyouinteract.Peoplewhohavesharedvaluesandprinciplesgetlong.Peoplewhodontwillsufferthroughconstantmisunderstandingsandconflicts.Thinkaboutthepeopleyouareclosestto:Aretheirvaluesalignedwithyours?Doyouevenknowwhattheirvaluesorprinciplesare?Tooofteninrelationships,people'sprinciplesarentclear.ThisisespeciallyproblematicinorganizationswherepeopleneedtohavesharedprinciplestobesuccessfulBeingcrystalclearaboutmyprinciplesiswhyIlaboredsomuchovereverysentenceinthisbookTheprinciplesyouchoosecanbeanythingyouwantthemtobeaslongastheyareauthentic--i.e,aslongastheyreflectyourtruecharacterandvalues

BP（BackPropagation）神经网络是一种神经网络学习算法。
其由输入层、中间层、输出层组成的阶层型神经网络，中间层可扩展为多层。
相邻层之间各神经元进行全连接，而每层各神经元之间无连接，网络按有教师示教的方式进行学习，当一对学习模式提供给网络后，各神经元获得网络的输入响应产生连接权值（Weight）。
然后按减小希望输出与实际输出误差的方向，从输出层经各中间层逐层修正各连接权，回到输入层。
此过程反复交替进行，直至网络的全局误差趋向给定的极小值，即完成学习的过程，

针对不同的衰落（对数正态分布、瑞利衰落、Nakagami衰落），发射端采用不同的功率分配方案，绘制出相应的平坦衰落信道容量随平均接受信噪比变化的曲线，并进行对比分析。
具体曲线参照AndreaGoldsmith的《WIRELESSCOMMUNICATIONS》教材中Figure4.6、Figure4.7、Figure4.8。
由于水平有限，仅供初学者入门学习，部分程序在运行时会报错和警告，可能是由于matlab程序中使用的integral等求解积分方程的函数，建议在matlab2012a以上的版本运行，本代码是在matlab2017b的版本上运行。
如过聪明的你能发现错误并代码优化，期待大神不吝赐教。

是USB最新规范3.0的规范包，里面包含有1.ECN003(ResetPropagation)Figure.pdf2.ECN001(LDN120508).pdf3.ECN002_CabCon-1_.pdf4.ECN003(ResetPropagation).pdf5.Q1-09USB3_Errata.pdf6.USB30(11132008)-final.pdf7.USB3.0_AdoptersAgreement_Final_111308.pdf

在日常工作中，钉钉打卡成了我生活中不可或缺的一部分。然而，有时候这个看似简单的任务却给我带来了不少烦恼。 每天早晚，我总是得牢记打开钉钉应用，点击"工作台"，再找到"考勤打卡"进行签到。有时候因为工作忙碌，会忘记打卡，导致考勤异常，影响当月的工作评价。而且，由于我使用的是苹果手机，有时候系统更新后，钉钉的某些功能会出现异常，使得打卡变得更加麻烦。 另外，我的家人使用的是安卓手机，他们也经常抱怨钉钉打卡的繁琐。尤其是对于那些不太熟悉手机操作的长辈来说，每次打卡都是一次挑战。他们总是担心自己会操作失误，导致打卡失败。 为了解决这些烦恼，我开始思考是否可以通过编写一个全自动化脚本来实现钉钉打卡。经过一段时间的摸索和学习，我终于成功编写出了一个适用于苹果和安卓系统的钉钉打卡脚本。