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Learn How to Create DDI Metadata A Technical Introduction
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Welcome to EDDI
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Agenda DDI Introduction XML Introduction DDI Walkthrough and Exercises Publishing DDI Where to Learn More Discussion
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Learn DDI 3 in 60 Seconds
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Study Concepts Concepts measures Survey Instruments using Questions made up of Universes about Copyright © GESIS – Leibniz Institute for the Social Sciences, 2010 Published under Creative Commons Attribute-ShareAlike 3.0 Unported
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Questions Responses collect resulting in Data Files Variables made up of Categories/ Codes, Numbers with values of Copyright © GESIS – Leibniz Institute for the Social Sciences, 2010 Published under Creative Commons Attribute-ShareAlike 3.0 Unported
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That’s Pretty Much It.
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Concepts Variables Concepts Codes Categories Summary Statistics Physical Location Studies
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Less Redundant Work 9
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The Data Lifecycle 10 Documentation Lost
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Better, Easier Documentation 11 Documentation is often a lower priority than data processing and analysis Make documentation a byproduct of the design and collection process The information is most accurate at this point
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XML represents information XML is machine readable eXtensible Markup Language (XML)
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XML Elements The Hitchhiker's Guide to the Galaxy Douglas Adams 1979
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XML Attributes The Hitchhiker's Guide to the Galaxy Douglas Adams 1979
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Conflicting Tag Names 4 5 3 4 3
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<MyData xmlns:kitchen=“http://www.example.org/kitchen” xmlns:data=“http://www.example.org/data”> 4 5 3 4 3 <MyData xmlns:kitchen=“http://www.example.org/kitchen” xmlns:data=“http://www.example.org/data”>
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DDI and XML...
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DDI and XML...
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DDI Walkthrough
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Universes People People attending EDDI
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A Universe in XML EDDI Participants People attending the EDDI 2011 conference in Gothenburg.
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A Universe in XML EDDI Participants People attending the EDDI 2011 conference in Gothenburg.
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Using the DDI Workshop Helper
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DDI Workshop Helper http://ddiworkshop.thatip.net/ Login: your email address Password: eddi2011
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Concepts A concept defines something that may be measured Age Gender Employment status
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A Concept in DDI Hitchhiking Hitchhiking is a means of transportation that is gained by asking people, usually strangers, for a ride in their automobile or other road vehicle
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Where did it go?...
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Where did it go?...
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Identification <c:ConceptScheme id="scheme1" version="1.0.0" agency="example.org">.........
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Categories Mode of Transportation Airplane Automobile Boat
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Mode of Transportation Airplane Automobile Boat
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Mode of Transportation Airplane Automobile Boat
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Codes Mode of Transportation ValueCategory 1Airplane 2Automobile 3Boat
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Codes Marital Status ValueCategory 0Airplane 1Automobile 2Boat
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References in DDI Category List Code List 1 Code List 2 Code List 3
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categories1 example.org 1.0.0 cat1 example.org 1.0.0 1
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categories1 example.org 1.0.0 cat1 example.org 1.0.0 1
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<l:CodeScheme id="codeList1" version="1.0.0" agency="example.org"> Transportation Codes...
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<l:CodeScheme id="codeList1" version="1.0.0" agency="example.org"> Transportation Codes...
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Questions What is your name? How did you get to Gothenburg?
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A Question in DDI name What is your name?
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A Question in DDI name What is your name?
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Other Response Types Text Numeric DateTime Category Code Geographic
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Question with a Code List transport How did you get to Gothenburg? codeList1 example.org 1.0.0
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Variables Name Mode of Transportation
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A Variable in DDI name The person's name
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A Variable in DDI name The person's name
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And Then What?
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Studies Study-level Information Citation Abstract, Purpose Links to related materials Study Content Survey Instruments Datasets
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Publishing DDI
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Where to Learn More The DDI Web Site DDI Documentation Talk to Me
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Thank you InstructorJeremy Iverson Emailjeremy@colectica.com Webcolectica.com Blogblogs.colectica.com Twitter@Colectica
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