数据科学入门，第二版，介绍数据科学基本知识的重量级读本，Google数据科学家作品。
　　数据科学是一个蓬勃发展、前途无限的行业，有人将数据科学家称为“21世纪头号性感职业”。
本书从零开始讲解数据科学工作，教授数据科学工作所必需的黑客技能，并带领读者熟悉数据科学的核心知识——数学和统计学。
　　作者选择了功能强大、简单易学的Python语言环境，亲手搭建工具和实现算法，并精心挑选了注释良好、简洁易读的实现范例。
书中涵盖的所有代码和数据都可以在GitHub上下载。
　　通过阅读本书，你可以：　　学到一堂Python速成课；
　　学习线性代数、统计和概率论的基本方法，了解它们是怎样应用在数据科学中的；
　　掌握如何收集、探索、清理、转换和操作数据；
　　深入理解机器学习的基础；
　　运用k-近邻、朴素贝叶斯、线性回归和逻辑回归、决策树、神经网络和聚类等各种数据模型；
　　探索推荐系统、自然语言处理、网络分析、MapReduce和数据库。

离散数学+Discretemathematics1.FundamentalPrinciplesofCounting2.FundamentalofLogic3.SetTheory4.PropertiesoftheIntegers:MathematicalInduction

TodaysComprehensiveandAuthoritativeGuidetoAugmentedRealityByoverlayingcomputer-generatedinformationontherealworld,augmentedreality(AR)amplifieshumanperceptionandcognitioninremarkableways.Workinginthisfast-growingfieldrequiresknowledgeofmultipledisciplines,includingcomputervision,computergraphics,andhuman-computerinteraction.AugmentedReality:PrinciplesandPracticeintegratesallthisknowledgeintoasingle-sourcereference,presentingtodaysmostsignificantworkwithscrupulousaccuracy.PioneeringresearchersDieterSchmalstiegandTobiasHollerercarefullybalanceprinciplesandpractice,illuminatingARfromtechnical,methodological,anduserperspectives.CoverageincludesDisplays:head-mounted,handheld,projective,auditory,andhapticTracking/sensing,includingphysicalprinciples,sensorfusion,andreal-timecomputervisionCalibration/registration,ensuringrepeatable,accurate,coherentbehaviorSeamlessblendingofrealandvirtualobjectsVisualizationtoenhanceintuitiveunderstandingInteractionfromsituatedbrowsingtofull3DinteractionModelingnewgeometriccontentAuthoringARpresentationsanddatabasesArchitectingARsystemswithreal-time,multimedia,anddistributedelementsThisguideisindispensableforanyoneinterestedinAR,includingdevelopers,engineers,students,instructors,researchers,andserioushobbyists.

KentaroToyama的Wallflowerpaper中的图像测试集原paper：KentaroToyama,JohnKrumm,BarryBrumitt,BrianMeyers,"Wallflower:PrinciplesandPracticeofB

Forecastingisrequiredinmanysituations.Decidingwhethertobuildanotherpowergenerationplantinthenextfiveyearsrequiresforecastsoffuturedemand.Schedulingstaffinacallcentrenextweekrequiresforecastsofcallvolumes.Stockinganinventoryrequiresforecastsofstockrequirements.Telecommunicationroutingrequirestrafficforecastsafewminutesahead.Whateverthecircumstancesortimehorizonsinvolved,forecastingisanimportantaidineffectiveandefficientplanning.Thistextbookprovidesacomprehensiveintroductiontoforecastingmethodsandpresentsenoughinformationabouteachmethodforreaderstousethemsensibly.ExamplesuseRwithmanydatasetstakenfromtheauthors'ownconsultingexperience.

Don'tMakeMeThink第3版英文版文字版全彩色觉得好请留评论DontmakemeThinkRevisitedACommonSenseapproachtoWebUsabilityCopyrighto2014SteveKrugNewriderswww.newniders.comToreporterrorspleasesendanotetoerrata@peachpit.comNewridersisanimprintofpeachpitadivisionofpearsoneducationEditor:ElisabethbayleProjecteditor:NancyDavisProductioneditor:lisabraziealCopyEditorBarbaraFlanaganInteriorDesignandComposition:RomneyLangeIllustrationsbymarkMatchaandMimiHeftFarnhamfontsprovidedbyTheFontbureauInc.(www.fontbureau.comNoticeofRightsAllrightsreservedNopartofthisbookmaybereproducedortransmittedinanyformbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutthepriorwrittenpermissionofthepublisher.Forinformationongettingpermissionforreprintsandexcerpts,contactpermissions@peachpit.comNoticeofliabilityTheinformationinthisbookisdistributedonan"asisbasiswithoutwarranty.whilileeveryprecautionhasbeentakeninthepreparationofthebook,neithertheauthornorPeachpitshallhaveanyliabilitytoanypersonorentitywithrespecttoanylossordamagecausedorallegedtobecauseddirectlyorindirectlybytheinstructionscontainedinthisbookorbythecomputersoftwareandhardwareproductsdescribedinittrademarksItsnotrocketsurgeryisatrademarkofStevekrugManyofthedesignationsusedbymanufacturersandsellerstodistinguishtheirproductsareclaimedastrademarks.Wherethosedesignationsappearinthisbook,andpeachpitwasawareofatrademarkclaim,thedesignationsappearasrequestedbytheownerofthetrademark.allotherproductnamesandservicesidentifiedthroughoutthisbookareusedineditorialfashiononlyandforthebenefitofsuchcompanieswithnointentionofinfringementofthetrademark.Nosuchuse,ortheuseofanytradename,isintendedtoconveyendorsementorotheraffiliationwiththisbookISBN-13:978-0-32196551-6ISBN-10:0-321-96551-5987654321PrintedandboundintheunitedstatesofamericaFirsteditionTomyfather,whoalwayswantedmetowriteabook,Mymother,whoalwaysmademefeellikeIcouldMelanie,whomarriedme-thegreateststrokeofgoodfortuneofmylifeandmyson,Harry,whowillsurelywritebooksmuchbetterthanthisonewheneverhewantstoSecondeditionTomybigbrother,Phil,whowasamenschhiswholelifeThirdeditionToallthepeoplefromallpartsoftheworld--whohavebeensoniceaboutthisbookforfourteenyears.Yourkindwords--inperson,inemail,andinyourblogs-havebeenoneofthegreatjoysofmylifeEspeciallythewomanwhosaiditmadeherlaughsohardthatmilkcameoutheofhernoseContentsPREFACEAboutthiseditionINTRODUCTIONReadmefirstThroatclearinganddisclaimersGUIDINGPRINCIPLESCHAPTER1Dontmakemethink!Krug'sFirstLawofusabilityCHAPTER2HowwereallyusethewebScanning,satisficing,andmuddlingthroughCHAPTER3.BillboardDesign101Designingforscanning,notreadingCHAPTER4.AnimaL,Vegetable,orMineral?WhyuserslikemindlesschoicesCHAPTER5OmitneedlesswordsTheartofnotwritingfortheWebTHINGSYOUNEEDTOGETRIGHTCHAPTER6.StreetsignsandBreadcrumbsDesigningnavigationCHAPTERZTheBigBangTheoryofWebDesignTheimportanceofgettingpeopleoffontherightfootMAKINGSUREYOUGOTTHEMRIGHTCHAPTER8Thefarmerandthecowmanshouldbefriends>Whymostargumentsaboutusabilityareawasteoftime,andhowtoavoidthemChAPTER9.USabilitytestingon10centsadayKeepingtestingsimple--soyoudoenoughofitLARGERCONCERNSANDOUTSIDEINFLUENCESCHAPTER10MObile:It'snotjustacityinAlabamaanymoreWelcometothe21stCentury.YoumayexperienceaslightsenseofvertigoCHAPTER11UsabilityascommoncourtesyWhyyourWebsiteshouldbeamenschCHAPTER12.AccessibilityandyouJustwhenyouthinkyouredone,acatfloatsbywithbutteredtoaststrappedtoitsbackCHAPTER13GuidefortheperplexedMakingusabilityhappenwhereyouliveAcknowledgmentsIndexPreface:aboutthiseditionPeoplecomeandgosoquicklyhere!DOROTHYGALEJUDYGARLAND)INTHEWIZARDOFOZ(1939)Iwrotethefirsteditionofdon'tmakemethinkbackin2000By2002,Ibegantogetafewemailsayearfromreadersasking(verypolitely)ifI'dthoughtaboutupdatingit.Notcomplaining,justtryingtobehelpful."alotoftheexamplesareoutofdate"wastheusualcommentMystandardresponsewastopointoutthatsinceiwroteitrightaroundthetimetheinternetbubbleburstmanyofthesitesiusedasexampleshadalreadydisappearedbythetimeitwaspublishedButIdidn'tthinkthatmadetheexamplesanylessclear.Finally,in2006Ihadastrongpersonalincentivetoupdateit.ButasIrereadittoseewhatIshouldchange,Ijustkeptthinking"Thisisallstilltrue>Ireallycouldn'tfindmuchofanythingthatithoughtshouldbechangedHalfoftheroyaltiesforthebookweregoingtoacompanythatnolongerexisted,anddoinganeweditionmeantanewcontractandtwicetheroyalties-formeIfitwasanewedition,though,somethinghadtobedifferent.SoIaddedthreechaptersthatididn'thavetimetofinishbackin2000,hitthesnoozebutton,andhappilypulledthecoversbackovermyheadforanothersevenyearsSteveKrugACommonSenseApproachtoWebUsabilityFOREWORDBYROGERBLACK2000SteveKrugTHINKACommonSenseApproachtoWebUsabilitySECONDEDITION2006WRitingisreallyhardforme,andI'malwayshappytohaveareasonnottodoit.GivemeagoodoldrootcanaloverwritinganydaySowhynowfinallyanewedition?Tworeasons#1。
Let’sfaceit:It'soldThere'snodoubtaboutitatthispoint:Itfeelsdated.Afterall,it'sthirteenyearsold,whichislikeahundredyearsinInternettime.(See?Nobodyevensaysthingslike"inInternettimeanymoreMostofthewebpagesiusedforexamples,likeSenatorOrrinHatch'scampaignsiteforthe2000electionlookreallyold-fashionednowSitesthesedaystendtolookalotmoresophisticated,asyoumightexpectPRENIDEN'TWWw.\TOCiTheRepublicans:ANewHampshireForumTheDec2DebateThefirstakeahddyeGoPdebyetesThursdayheatsupthepoltcalstylewarsaSenatorHatchfightstokeepsubstancenCampaign2000.EVLLSTORYTheExperiencedCandidateLw警mHatchCampaign2000BeneoiceThatMatters!ClickheretoCONTRIBUTECAMPAIGNNEWSlIVESCONTIRIHIUTORLINTsCOILINKS)LUNTEEILThieRar4每MCICK2cpM(.DisHachPre的d时Ceme,ntP0.00多』LC,UT0403nTERNETANDNTwoRxsaunaSwww.orrinhatch.com1999

英文原版，数字版，非影印版，无水印，有目录，第三版。
HowcanyoubringoutMySQL’sfullpower?WithHighPerformanceMySQL,you’lllearnadvancedtechniquesforeverythingfromdesigningschemas,indexes,andqueriestotuningyourMySQLserver,operatingsystem,andhardwaretotheirfullestpotential.Thisguidealsoteachesyousafeandpracticalwaystoscaleapplicationsthroughreplication,loadbalancing,highavailability,andfailover.UpdatedtoreflectrecentadvancesinMySQLandInnoDBperformance,features,andtools,thisthirdeditionnotonlyoffersspecificexamplesofhowMySQLworks,italsoteachesyouwhythissystemworksasitdoes,withillustrativestoriesandcasestudiesthatdemonstrateMySQL’sprinciplesinaction.Withthisbook,you’lllearnhowtothinkinMySQL.LearntheeffectsofnewfeaturesinMySQL5.5,includingstoredprocedures,partitioneddatabases,triggers,andviewsImplementimprovementsinreplication,highavailability,andclusteringAchievehighperformancewhenrunningMySQLinthecloudOptimizeadvancedqueryingfeatures,suchasfull-textsearchesTakeadvantageofmodernmulti-coreCPUsandsolid-statedisksExplorebackupandrecoverystrategies—includingnewtoolsforhotonlinebackups

Theupdatedrevisionofthewell-respectedbookonanalyzingaircraftperformance,ThisSecondEditionofthebestsellingAircraftControlandSimulationhasbeenexpandedandupdatedtoincludethelatesttechnologicaladvancesinthefield.Inaddition,anewsectiononbasicaerodynamics,aircraftconfiguration,andstaticstabilitymakesthiscomplexmaterialmoreaccessibletobeginners.,Thiscomprehensiveguidediscussesthefundamentalprinciplesandtheoryofaircraftcontrolandsimulation.Italsocoversmodelinganddynamicanalysis,stabilityevaluation,multivariablecontroltheory,andcomputer-aideddesigntechniques.Theinclusionoftopicsfromgeodesyandgravitationlaysthegroundworkforadiscussionofthetheoryforsuborbitalaircraftnowunderdevelopment.,Specialfeaturesofthisneweditioninclude:,*NewandupdatedcomputercalculationsusingMATLAB(r),*Anewsectiononbasicaerodynamics,aircraftconfigurations,andstaticstability,*CoverageofnewMIMOdesigntechniques,robustnesstheory,andnonlineardesign,Completewithexamplesofactualdesignsfromtheaircraftindustryplusexerciseproblems,AircraftControlandSimulation,SecondEditionisanexcellentreferenceforanyoneinvolvedinthedesignandmodelingofaerospacevehiclesandanoutstandingtextforbothundergraduatesandgraduatestudents.

DigitalSignalProcessing,Principles,AlgorithmsandApplications,fourthedition

Thisdefinitivetextbookprovidesasolidintroductiontodiscreteandcontinuousstochasticprocesses,tacklingacomplexfieldinawaythatinstilsadeepunderstandingoftherelevantmathematicalprinciples,anddevelopsanintuitivegraspofthewaytheseprinciplescanbeappliedtomodellingreal-worldsystems.ItincludesacarefulreviewofelementaryprobabilityanddetailedcoverageofPoisson,GaussianandMarkovprocesseswithrichlyvariedqueuingapplications.Thetheoryandapplicationsofinference,hypothesistesting,estimation,randomwalks,largedeviations,martingalesandinvestmentsaredeveloped.Writtenbyoneoftheworld'sleadinginformationtheorists,evolvingovertwentyyearsofgraduateclassroomteachingandenrichedbyover300exercises,thisisanexceptionalresourceforanyonelookingtodeveloptheirunderstandingofstochasticprocesses.

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。