Therearelotsofissuesexistingintraditionalcollaborativefilteringrecommendation,.suchasdatascarcities,coldstart,recommendationaccuracyand.timeliness.Andhowtoimprovetheefficiencyandqualityofrecommendationisa.keyproblemincollaborativerecommendation.Inthetraditionalcollaborativefiltering.algorithms,theratingscaleofdifferentusersforallprojectssometimesmaybe.neglectedwhilecalculatingthesimilarity.Somealgorithmssuchasadjustedcosine.similarity

Solveavarietyofreal-worldprogrammingandlogicproblemsbyleveragingthepowerofC++17Testyourskillsinusinglanguagefeatures,algorithms,datastructures,designpatterns,andmoreExploreareassuchascryptography,communication,andimagehandlinginC++BookDescriptionC++isoneofthemostwidely-usedprogramminglanguagesandhasapplicationsinavarietyoffields,suchasgaming,GUIprogramming,andoperatingsystems,tonameafew.Throughtheyears,C++hasevolvedinto(andremains)oneofthetopchoicesforsoftwaredevelopersworldwide.ThisbookwillshowyousomenotableC++featuresandhowtoimplementthemtomeetyourapplicationneeds.Eachproblemisuniqueanddoesn'tjusttestyourknowledgeofthelanguage;ittestsyourabilitytothinkoutoftheboxandcomeupwiththebestsolutions.Withvaryinglevelsofdifficulty,you'llbefacedwithawidevarietyofchallenges.Andincaseyou'restumped,youdon'thavetoworry:we'vegotthebestsolutionstotheproblemsinthebook.Soareyouupforthechallenge?WhatyouwilllearnSerializeanddeserializeJSONandXMLdataPerformencryptionandsigningtofacilitatesecurecommunicationbetweenpartiesEmbedanduseSQLitedatabasesinyourapplicationsUsethreadsandasynchronousfunctionstoimplementgenericpurposeparallelalgorithmsCompressanddecompressfilesto/fromaZIParchiveImplementdatastructuressuchascircularbufferandpriorityqueueImplementgeneralpurposealgorithmsaswellasalgorithmsthatsolvespecificproblemsCreateclient-serverapplicationsthatcommunicateoverTCP/IPConsumeHTTPRESTservicesUsedesignpatternstosolvereal-worldproblemsWhothisbookisforThisbookwillappealtoC++developersofalllevels.There'sachallengeinsideforeveryone.Chapter1,MathProblems,containsaseriesofmathexercisestowarmyouupforthemorechallengingproblemsinthenextchapters.Chapter2,LanguageFeatures,proposespr

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[算法导论].[Introduction.to.Algorithms].Thomas.H.Cormen.Ronald.L.Rivest.Charles.E.Leiserson.Clifford.Stein

生物信息学算法导论，英文原版an-introduction-to-bioinformatics-algorithms，有需要的可以下载

GuojunGanYorkUniversityToronto,Ontario,CanadaChaoqunMaHunanUniversityChangsha,Hunan,People’sRepublicofChinaJianhongWuYorkUniversityToronto,Ontario,Canada

ETHERNETPONs:ASURVEYOFDYNAMICBANDWIDTHALLOCATION(DBA)ALGORITHMS。

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

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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。