NTLisaportableC++libraryprovidingtoolsfor:ArbitraryintegerandfloatingpointarithmeticPolynomialArithmeticLatticebasisreductionBasiclinearalgebra

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ContentsPrefacevTypographicalConventionsxi1Introduction11.1AQuickOverviewofS.......................31.2UsingS...............................51.3AnIntroductorySession......................61.4WhatNext?.............................122DataManipulation132.1Objects...............................132.2Connections.............................202.3DataManipulation.........................272.4TablesandCross-Classification...................373TheSLanguage413.1LanguageLayout..........................413.2MoreonSObjects.........................443.3ArithmeticalExpressions......................473.4CharacterVectorOperations....................513.5FormattingandPrinting.......................543.6CallingConventionsforFunctions.................553.7ModelFormulae...........................563.8ControlStructures..........................583.9ArrayandMatrixOperations....................603.10IntroductiontoClassesandMethods................664Graphics694.1GraphicsDevices..........................714.2BasicPlottingFunctions......................72viiviiiContents4.3EnhancingPlots...........................774.4FineControlofGraphics......................824.5TrellisGraphics...........................895UnivariateStatistics1075.1ProbabilityDistributions......................1075.2GeneratingRandomData......................1105.3DataSummaries...........................1115.4ClassicalUnivariateStatistics....................1155.5RobustSummaries.........................1195.6DensityEstimation.........................1265.7BootstrapandPermutationMethods................1336LinearStatisticalModels1396.1AnAnalysisofCovarianceExample................1396.2ModelFormulaeandModelMatrices...............1446.3RegressionDiagnostics.......................1516.4SafePrediction....................

Idealforgraduateandseniorundergraduatecoursesincomputerarithmeticandadvanceddigitaldesign,ComputerArithmetic:AlgorithmsandHardwareDesigns,SecondEdition,providesabalanced,comprehensivetreatmentofcomputerarithmetic.Itcoverstopicsinarithmeticunitdesignandcircuitimplementationthatcomplementthearchitecturalandalgorithmicspeeduptechniquesusedinhigh-performancecomputerarchitectureandparallelprocessing.Usingaunifiedandconsistentframework,thetextbeginswithnumberrepresentationandproceedsthroughbasicarithmeticoperations,floating-pointarithmetic,andfunctionevaluationmethods.Laterchapterscoverbroaddesignandimplementationtopics-includingtechniquesforhigh-throughput,low-power,fault-tolerant,andreconfigurablearithmetic.Anappendixprovidesahistoricalviewofthefieldandspeculatesonitsfuture.Anindispensableresourceforinstruction,professionaldevelopment,andresearch,ComputerArithmetic:AlgorithmsandHardwareDesigns,SecondEdition,combinesbroadcoverageoftheunderlyingtheoriesofcomputerarithmeticwithnumerousexamplesofpracticaldesigns,worked-outexamples,andalargecollectionofmeaningfulproblems.Thissecondeditionincludesanewchapteronreconfigurablearithmetic,inordertoaddressthefactthatarithmeticfunctionsareincreasinglybeingimplementedonfield-programmablegatearrays(FPGAs)andFPGA-likeconfigurabledevices.Updatedandthoroughlyrevised,thebookoffersnewandexpandedcoverageofsaturatingaddersandmultipliers,truncatedmultipliers,fusedmultiply-addunits,overlappedquotientdigitselection,bipartiteandmultipartitetables,reversiblelogic,dotnotation,modulararithmetic,Montgomerymodularreduction,divisionbyconstants,IEEEfloating-pointstandardformats,andintervalarithmetic.Features:*Dividedinto28lecture-sizechapters*Emphasizesboththeunderlyingtheoriesofcomputerarithmeticandactua

这是一部数学名著，数学王子高斯的原著英译版，是高斯本人在数论上的集大成之作。

Distributedsourcecodingisoneofthekeyenablersforefficientcooperativecommunication.Thepotentialapplicationsrangefromwirelesssensornetworks,ad-hocnetworks,andsurveillancenetworks,torobustlow-complexityvideocoding,stereo/Multiviewvideocoding,HDTV,hyper-spectralandmultispectralimaging,andbiometrics.Thebookisdividedintothreesections:theory,algorithms,andapplications.PartonecoversthebackgroundofinformationtheorywithanemphasisonDSC;parttwodiscussesdesignsofalgorithmicsolutionsforDSCproblems,coveringthethreemostimportantDSCproblems:Slepian-Wolf,Wyner-Ziv,andMTsourcecoding;andpartthreeisdedicatedtoavarietyofpotentialDSCapplications.Keyfeatures:Clearexplanationofdistributedsourcecodingtheoryandalgorithmsincludingbothlosslessandlossydesigns.Richapplicationsofdistributedsourcecoding,whichcoversmultimediacommunicationanddatasecurityapplications.Self-containedcontentforbeginnersfrombasicinformationtheorytopracticalcodeimplementation.Thebookprovidesfundamentalknowledgeforengineersandcomputerscientiststoaccessthetopicofdistributedsourcecoding.Itisalsosuitableforseniorundergraduateandfirstyeargraduatestudentsinelectricalengineering;computerengineering;signalprocessing;image/videoprocessing;andinformationtheoryandcommunications.TableofContentsChapter1:IntroductionPartI:TheoryofDistributedSourceCodingChapter2:LosslessCompressionofCorrelatedSourcesChapter3:Wyner–ZivCodingTheoryChapter4:LossyDistributedSourceCodingPartII:ImplementationChapter5:Slepian–WolfCodeDesignsBasedonChannelCodingChapter6:DistributedArithmeticCodingChapter7:Wyner–ZivCodeDesignPartIII:ApplicationsChapter8:Wyner–ZivVideoCodingChapter9:CorrelationEstimationinDVCChapter10:DSCforSolarImageCompressionChapter11:SecureDistributedImageCodingChapter12:Se

《快学Scala》英文第二版：ScalafortheImpatientSecondEditionCayS.Horstmann目录：1THEBASICSA111.1TheScalaInterpreter11.2DeclaringValuesandVariables41.3Co妹妹onlyUsedTypes51.4ArithmeticandOperatorOverloading61.5MoreaboutCallingMethods81.6TheapplyMethod91.7Scaladoc10Exercises152CONTROLSTRUCTURESANDFUNCTIONSA1172.1ConditionalExpressions182.2StatementTermination192.3BlockExpressionsandAssignments20viiContents2.4InputandOutput212.5Loops222.6AdvancedforLoops242.7Functions252.8DefaultandNamedArgumentsL1262.9VariableArgumentsL1262.10Procedures282.11LazyValuesL1282.12Exceptions29Exercises313WORKINGWITHARRAYSA1353.1Fixed-LengthArrays353.2Variable-LengthArrays:ArrayBuffers363.3TraversingArraysandArrayBuffers373.4TransformingArrays383.5Co妹妹onAlgorithms403.6DecipheringScaladoc413.7MultidimensionalArrays423.8InteroperatingwithJava43Exercises444MAPSANDTUPLESA1474.1ConstructingaMap484.2AccessingMapValues484.3UpdatingMapValues494.4IteratingoverMaps504.5SortedMaps504.6InteroperatingwithJava504.7Tuples514.8Zipping52Exercises52viiiContents5CLASSESA1555.1SimpleClassesandParameterlessMethods555.2PropertieswithGettersandSetters565.3PropertieswithOnlyGetters595.4Object-PrivateFields605.5BeanPropertiesL1615.6AuxiliaryConstructors625.7ThePrimaryConstructor635.8NestedClassesL166Exercises686OBJECTSA1716.1Singletons716.2CompanionObjects726.3ObjectsExtendingaClassorTrait736.4TheapplyMethod736.5ApplicationObjects746.6Enumerations75Exercises777PACKAGESANDIMPORTSA1797.1Packages807.2ScopeRules817.3ChainedPackageClauses837.4Top-of-FileNotation837.5PackageObjects837.6PackageVisibility847.7Imports857.8ImportsCanBeAnywhere857.9RenamingandHidingMembers867.10ImplicitImports86Exercises87ixContents8INHERITANCEA1918.1ExtendingaClass918.2OverridingMethods928.3TypeChecksandCasts938.4ProtectedFieldsandMethods948.5SuperclassConstruction948.6OverridingFields958.7AnonymousSubclasses978.8AbstractClasses978.9AbstractFields978.10ConstructionOrderandEarlyDefinitionsL3988.11TheScalaInheritanceHierarchy1008.12ObjectEqualityL11028.13ValueClassesL2103Exercises1059FILESANDREGULAREXPRESSIONSA11099.1ReadingLines1099.2ReadingCharacters1109.3ReadingTokensandNumbers1119.4ReadingfromURLsandOtherSources1119.5ReadingBinaryFiles1129.6WritingTextFiles1129.7VisitingDirectories1129.8Serialization1139.9ProcessControlA21149.10RegularExpressions1169.11RegularExpressionGroups117Exercises11810TRAITSL112110.1WhyNoMultipleInheritance?12110.2TraitsasInterfaces12310.3TraitswithConcreteImplementations124xContents10.4ObjectswithTraits12510.5LayeredTraits12510.6OverridingAbstractMethodsinTraits12710.7TraitsforRichInterfaces12710.8ConcreteFieldsinTraits12810.9AbstractFieldsinTraits13010.10TraitConstructionOrder13010.11InitializingTraitFields13210.12TraitsExtendingClasses13310.13SelfTypesL213410.14WhatHappensundertheHood135Exercises13711OPERATORSL114111.1Identifiers14211.2InfixOperators14311.3UnaryOperators14311.4AssignmentOperators14411.5Precedence14411.6Associativity14511.7TheapplyandupdateMethods14611.8ExtractorsL214711.9ExtractorswithOneorNoArgumentsL214911.10TheunapplySeqMethodL214911.11DynamicInvocationL2150Exercises15312HIGHER-ORDERFUNCTIONSL115712.1FunctionsasValues15712.2AnonymousFunctions15912.3FunctionswithFunctionParameters16012.4ParameterInference16012.5UsefulHigher-OrderFunctions16112.6Closures162xiContents12.7SAMConversions16312.8Currying16412.9ControlAbstractions16612.10ThereturnExpression167Exercises16813COLLECTIONSA217113.1TheMainCollectionsTraits17213.2MutableandI妹妹utableCollections17313.3Sequences17413.4Lists17513.5Sets17713.6OperatorsforAddingorRemovingElements17813.7Co妹妹onMethods18013.8MappingaFunction18213.9Reducing,Folding,andScanningA318413.10Zipping18713.11Iterators18813.12StreamsA318913.13LazyViewsA319013.14InteroperabilitywithJavaCollections19113.15ParallelCollections193Exercises19414PATTERNMATCHINGANDCASECLASSESA219714.1ABetterSwitch19814.2Guards19914.3VariablesinPatterns19914.4TypePatterns20014.5MatchingArrays,Lists,andTuples20114.6Extractors20214.7PatternsinVariableDeclarations20314.8PatternsinforExpressions20414.9CaseClasses205xiiContents14.10ThecopyMethodandNamedParameters20514.11InfixNotationincaseClauses20614.12MatchingNestedStructures20714.13AreCaseClassesEvil?20814.14SealedClasses20914.15SimulatingEnumerations20914.16TheOptionType21014.17PartialFunctionsL2211Exercises21215ANNOTATIONSA221515.1WhatAreAnnotations?21615.2WhatCanBeAnnotated?21615.3AnnotationArguments21715.4AnnotationImplementations21815.5AnnotationsforJavaFeatures21915.5.1JavaModifiers21915.5.2MarkerInterfaces22015.5.3CheckedExceptions22015.5.4VariableArguments22115.5.5JavaBeans22115.6AnnotationsforOptimizations22215.6.1TailRecursion22215.6.2JumpTableGenerationandInlining22315.6.3ElidingMethods22415.6.4SpecializationforPrimitiveTypes22515.7AnnotationsforErrorsandWarnings226Exercises22716XMLPROCESSINGA222916.1XMLLiterals23016.2XMLNodes23016.3ElementAttributes23216.4EmbeddedExpressions233xiiiContents16.5ExpressionsinAttributes23416.6Unco妹妹onNodeTypes23516.7XPath-likeExpressions23516.8PatternMatching23716.9Modif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1.本节实验程序共5个.m文件2.BasicArithmeticCode.m、BasicArithmeticDecode.m分别是编码和解码算法。
3.Encoder.m、Decoder.m分别是编码器和解码器，他们调用以上的两个算法。
4.CaculateBits.m是用来计算压缩后总的比特数的文件，在BasicArithmeticCode.m中调用，但是由于时间代价高，默认正文掉，需要计算的时候再用。
5.整个操作流程：运行Encoder会读入Set12中的12张图片然后输出.dat数据文件，再运行Decoder就会读入数据文件，输出解码后的图像。

ArithmeticCodingLibraryThispackagewasadaptedfromtheprogramin"ArithmeticCodingforDataCompression"

Informationtheoryandinference,taughttogetherinthisexcitingtextbook,lieattheheartofmanyimportantareasofmoderntechnology-co妹妹unication,signalprocessing,datamining,machinelearning,patternrecognition,computationalneuroscience,bioinformaticsandcryptography.Thebookintroducestheoryintandemwithapplications.Informationtheoryistaughtalongsidepracticalco妹妹unicationsystemssuchasarithmeticcodingfordatacompressionandsparse-graphcodesforerror-correction.Inferencetechniques,includingmessage-passingalgorithms,MonteCarlomethodsandvariationalapproximations,aredevelopedalongsideapplicationstoclustering,convolutionalcodes,independentcomponentanalysis,andneuralnetworks.Uniquely,thebookcoversstate-of-the-arterror-correctingcodes,includinglow-density-parity-checkcodes,turbocodes,anddigitalfountaincodes-thetwenty-first-centurystandardsforsatelliteco妹妹unications,diskdrives,anddatabroadcast.Richlyillustrated,filledwithworkedexamplesandover400exercises,somewithdetailedsolutions,thebookisidealforself-learning,andforundergraduateorgraduatecourses.Italsoprovidesanunparalleledentrypointforprofessionalsinareasasdiverseascomputationalbiology,financialengineeringandmachinelearning.

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。