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JavaforDataScience
TableofContents
JavaforDataScience
Credits
AbouttheAuthors
AbouttheReviewers
www.PacktPub.com
eBooks,discountoffers,andmore
Whysubscribe?
CustomerFeedback
Preface
Whatthisbookcovers
Whatyouneedforthisbook
Whothisbookisfor
Conventions
Readerfeedback
Customersupport
Downloadingtheexamplecode
Errata
Piracy
Questions
1.GettingStartedwithDataScience
Problemssolvedusingdatascience
Understandingthedatascienceproblem-solvingapproach
UsingJavatosupportdatascience
Acquiringdataforanapplication
Theimportanceandprocessofcleaningdata
Visualizingdatatoenhanceunderstanding
Theuseofstatisticalmethodsindatascience
Machinelearningappliedtodatascience
Usingneuralnetworksindatascience
Deeplearningapproaches
Performingtextanalysis
Visualandaudioanalysis
Improvingapplicationperformanceusingparalleltechniques
Assemblingthepieces
Summary
2.DataAcquisition
Understandingthedataformatsusedindatascienceapplications
OverviewofCSVdata
Overviewofspreadsheets
Overviewofdatabases
OverviewofPDFfiles
OverviewofJSON
OverviewofXML
Overviewofstreamingdata
Overviewofaudio/video/imagesinJava
Dataacquisitiontechniques
UsingtheHttpUrlConnectionclass
WebcrawlersinJava
Creatingyourownwebcrawler
Usingthecrawler4jwebcrawler
WebscrapinginJava
UsingAPIcallstoaccesscommonsocialmediasites
UsingOAuthtoauthenticateusers
HandingTwitter
HandlingWikipedia
HandlingFlickr
HandlingYouTube
Searchingbykeyword
Summary
3.DataCleaning
Handlingdataformats
HandlingCSVdata
Handlingspreadsheets
HandlingExcelspreadsheets
HandlingPDFfiles
HandlingJSON
UsingJSONstreamingAPI
UsingtheJSONtreeAPI
Thenittygrittyofcleaningtext
UsingJavatokenizerstoextractwords
Javacoretokenizers
Third-partytokenizersandlibraries
Transformingdataintoausableform
Simpletextcleaning
Removingstopwords
Findingwordsintext
Findingandreplacingtext
Dataimputation
Subsettingdata
Sortingtext
Datavalidation
Validatingdatatypes
Validatingdates
Validatinge-mailaddresses
ValidatingZIPcodes
Validatingnames
Cleaningimages
Changingthecontrastofanimage
Smoothinganimage
Brighteninganimage
Resizinganimage
Convertingimagestodifferentformats
Summary
4.DataVisualization
Understandingplotsandgraphs
Visualanalysisgoals
Creatingindexcharts
Creatingbarcharts
Usingcountryasthecategory
Usingdecadeasthecategory
Creatingstackedgraphs
Creatingpiecharts
Creatingscattercharts
Creatinghistograms
Creatingdonutcharts
Creatingbubblecharts
Summary
5.StatisticalDataAnalysisTechniques
Workingwithmean,mode,andmedian
Calculatingthemean
UsingsimpleJavatechniquestofindmean
UsingJava8techniquestofindmean
UsingGoogleGuavatofindmean
UsingApacheCommonstofindmean
Calculatingthemedian
UsingsimpleJavatechniquestofindmedian
UsingApacheCommonstofindthemedian
Calculatingthemode
UsingArrayListstofindmultiplemodes
UsingaHashMaptofindmultiplemodes
UsingaApacheCommonstofindmultiplemodes
Standarddeviation
Samplesizedetermination
Hypothesistesting
Regressionanalysis
Usingsimplelinearregression
Usingmultipleregression
Summary
6.MachineLearning
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