MIT Libraries Data Management Workshops: Research Data ... · Research Data Management: Using...
Transcript of MIT Libraries Data Management Workshops: Research Data ... · Research Data Management: Using...
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Research Data Management: Using Metadata to Find, Interpret
& Share Your Data
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Today’s session:
● What is metadata?
● How do you document your data?
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What do we mean by data?
General Social Sciences Hard Sciences • images • survey responses
• video • focus group and
• mapping/GIS data individual interviews
• numerical • economic indicators
measurements • demographics
• opinion polling
• measurements generated by sensors/laboratory instruments
• computer modeling
• simulations
• observations and/or field studies
• specimen
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What is metadata?
“Metadata is structured information that describes, explains, locates, or otherwise makes it easier to retrieve, use, or manage an information resource. Metadata is often called data about data or information about information”
– NISO, Understanding Metadata 2004;1
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Why is metadata important?
Metadata enables you:
• to find data from other researchers • to use the data that you do find
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Why is metadata important?
Metadata enables you:
• to find data from other researchers • to use the data that you do find
• to help others to find and use you data • to use your own data in the future
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What is metadata?
When you receive a dataset from an external source, what types of details do you want to know about the data?
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When receiving data…
• What are the data gaps? • What processes were used for
creating the data? • Are there any fees associated with
the data? • In what scale were the data created? • What do the values in the tables mean? • What software do I need in order to read the data? • Can I give these data to someone else?
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What is metadata?
When you provide data to someone else, what types of information would you want to include with the data?
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When providing data…
• Why were the data created?
• What limitations, if any, do the data have?
• What does the data mean?
• How should the data be cited?
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Metadata Types
Descriptive Structural Administrative
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Documenting your data…
• In a filename
• In a readme file
• In a spreadsheet
• In an XML file
• Into a database
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Today’s session:
● What is metadata?
● Documenting your data?
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When?
The earlier the better!
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When?
Adapted from DDI version 3.0 Combined Life Cycle Model 15
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My Research (not really)
Squirrel Avoidance Project
16 Photo Courtesy of Nickomargolies on Wikimedia. License CC-BY.
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Metadata Considerations
1. What type of data are you producing?
2. What are your metadata resources?
3. What metadata elements do you need to capture?
4. How are you going to ensure consistent data entry?
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Site Date Time s PA MIT 20140115T0930 S1 1 MIT I20140215T0930 1s1 0 MIT 20140315T1130 S2 2 MIT I20140315T1130 IS1 4 HUM 20140115T0130 S1 1 HUM I20140215T0130 1s1 1 HUM 20140315T0130 S2 2 HUM 20140315T0130 S1 1
1: What data will you be producing?
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Metadata Considerations
1. What type of data are you producing?
2. What are your metadata resources?
3. What metadata elements do you need to capture?
4. How are you going to ensure consistent data entry?
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2: Metadata standards
• Darwin Core
• DDI – Data Documentation Initiative
• FGDC – Federal Geographic Data Committee
• Dublin Core
• …
Find your metadata standard: http://www.dcc.ac.uk/resources/metadata-standards
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2: Metadata resources
~ Auto-generated data
ü External metadata
ü Metadata standards • Dublin Core • Darwin Core
Squirrel Avoidance Project
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Metadata Considerations
1. What type of data are you producing?
2. What are your metadata resources?
3. What metadata elements do you need to capture?
4. How are you going to ensure consistent data entry?
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3: Metadata Elements
Descriptive Structural Administrative
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20140115T0930 l20140215T0930
2Ita DateTime S1S1 1
Site MIT 20140115T0930 81 MIT I20140215Tno~n 1~1
MIT 20140315 Site MIT
HUM 20140115 MIT 120140315
MIT i
HU~ HU~ IT 201401 5T0930 HU~
IT MIT
MIT I20140215T0930 2014031 30 l20140315T1130 201401 5T0130 l20140215T0130 2014031
HUM 20140315T0130
s 1 In
S1 S2 2 S1 S1 1 S1 1 S2 2 S1 1
S1 IS1 1 S2 2 S1 1
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Metadata Considerations
1. What type of data are you producing?
2. What are your metadata resources?
3. What metadata elements do you need to capture?
4. How are you going to ensure consistent data entry?
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4: Consistency
üUse a metadata standard
üUse controlled vocabulary
üUse technical standards
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4: Consistency
üUse a metadata standard
üUse controlled vocabulary
üUse technical standards
catalog vs. catalogue squirrel vs. Sciuridae automatons vs. robots
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4: Consistency
üUse a metadata standard
üUse controlled vocabulary
üUse technical standards
YYYY YYYY-MM YYYY-MM-DD YYYY-MM-DDThh:mmTZD
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Term Name:
URI:
Label:
Definition:
Comment:
format
httR:LLRurl.orgLdcLtermsLformat
Format
The file format, physical medium, or dimensions of the resource.
Examples of dimensions include size and duration. Recommended best practice is to use a controlled vocabulary such as the list of Internet Media Types [MIME].
[MIME] http://www.iana.org/assignments/media-types/
Term Name:
URI:
date T
httP- :LLRurl.orgLdcLtermsLdate
Label:
Definition:
Date
A point or period of time associated with an event in the lifecycle of the resource.
-
Comment:
References:
Date may be used to express temporal information at any level of granularity. Recommended best practice is to use an encoding scheme, such as the W3CDTF profile of ISO 8601 [W3CDTF].
[W3CDTF] http :IJwww. w3. org/TR/NOTE-dateti me
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4: Consistency
üUse a metadata standard
üUse controlled vocabulary
üUse technical standards
Data dictionary 30
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Metadata Considerations
1. What type of data are you producing?
2. What are your metadata resources?
3. What metadata elements do you need to capture?
4. How are you going to ensure consistent data entry?
5. How are you going to capture your metadata?
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Documenting your data…
• In a filename
• In a readme file
• In a spreadsheet
• In an XML file
• Into a database
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Documenting your data…
• In a filename
Example file naming conven,ons:
[inves5gator]_[method]_[subject]_[YYYYMMDD]_[version].[ext]
[project #] _[method]_[version]_[YYYYMMDD].[ext]
[YYYYMMDD] _[version]_[subject]_[datacollector].[ext]
[type of file]_[author]_[date].[ext]
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[project #] _[subject]_[collector].[ext] SAP1234_observations_cmalin.csv
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Documenting your data…
• In a readme file
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More on readme files
Best Practices
• Create one readme file for each data file/dataset
• Name the readme so that it is easily associated with the
data file(s) it describes
• Write your readme document as a plain text file
• Format multiple readme files identically
• Use standardized date formats
• Follow the conventions for your discipline (aka mimic known
metadata standard)
http://data.research.cornell.edu/sites/default/files/ SciMD_ReadMe_Guidelines_v4_1_0.pdf 36
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Documenting your data…
• In a filename
• In a readme file
• In a spreadsheet
• In an XML file
• Into a database
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Concerns About Creating Metadata
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Conclusion
• Questions?
• Other tips for your peers?
• See our web site:
http://libraries.mit.edu/data-management
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