Post on 19-Aug-2020
Make better decisions faster
Visualising topic modelling..
Simplifying or complexifying?
HélèneDraux
Make better decisions faster
Make better decisions faster
The Consultancy TeamProfJonathanAdamsChiefScientist
FormerDirectorofResearchEvaluationatThomsonReuters
Advisedonresearchmetricstogovernmentsaroundtheworld
SimonPorterVPAcademicRelationshipsandKnowledgeArchitecture
FormerlyofUofMelbourne
WorkedinResearchadministration,library,IT
DrMartinSzomszorConsultantDataScientistOneofTop50UKInformationAgedataleaders2015
DrPhillJonesDirectorofPublishingInnovation
FormeracademicscientistandscholarlypublisherWorkswithSSP,theSTMassociation,ALPSP
MikeTaylorHeadofResearchMetrics
FormerSeniorProductManager,InformetricsatElsevierWorkswithFORCE11,RDA,andNISO
AaronSorensonBibliometricsEngagementLeader
FormerlyofTempleUandGEHealthcare
ScientometricseditorofJournalofAlzheimerDisease
DrHélèneDrauxDataScientist–ResearchDatamanagementandvisualizationexpert
Geodataspecialty
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Our Customers and Collaborators
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Digital Research Reports
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Aggregating similar documents together (= unsupervised classification)
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Corpusofdocuments
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1.Cleantext(copyright,..)
2.Findcompoundse.g.“climatechange”
Pre-processing
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Pre-processing
Bagofwords
Findmostcommonwords
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SongJazzInstrument
ProcessKnowledgeResearch
HistoryHeritageGallery
Groupbytermfrequency
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Challenges Howmanytopics?
Largedatasets
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Number of topics
Dependsonthepurpose
Dependsonthehomogeneityofthedata
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Explore transition – Alluvial diagram
• Followtheterms
• Termsinmodelwith:• 25topics• 26topics• 27topics
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Hard to scale up
• 145to146to147
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Clusters of topics - Dendrogram
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Overview - Landscape
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Visualisation of topic models
Simplifiesthemodels
..butsomevisualisaYons
makethemmorecomplicated