dli training workshop - cudo.carleton.ca€¦ · data access projects roundtable discussion about...
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![Page 1: DLI Training Workshop - cudo.carleton.ca€¦ · data access projects Roundtable discussion about introducing data to our reference colleagues . DLI Workshop -- Dec 1999 7. DLI Workshop](https://reader034.vdocuments.site/reader034/viewer/2022051607/60317db6103e6165ec376100/html5/thumbnails/1.jpg)
Hosted by
the
University of Regina Library December 1999
DLI Training Workshop
Chuck Humphrey
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DLI Workshop --
Dec 1999 2
Day 1 : A.M.
• Review data service models within
the framework of:
access and dissemination
aggregate data and microdata
statistics versus data
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DLI Workshop --
Dec 1999 3
Day 1 : A.M.
Hands-on work with aggregate data
• CANSIM
• E-STAT
• Census ‘96
• Health Indicators Database
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DLI Workshop --
Dec 1999 4
Day 1 : P.M.
• Microdata retrieval systems
LANDRU (UC)
• introduction with hands-on experience
ISLAND (UBC)
• introduction with hands-on experience
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DLI Workshop --
Dec 1999 5
Day 2 : A.M.
Update to DLI since 1997
• experiences with new web
services
Spatial Data Retrieval: GEODE
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DLI Workshop --
Dec 1999 6
Day 2 : P.M.
Other data extractors
Discussion about possible COPPUL
data access projects
Roundtable discussion about
introducing data to our reference
colleagues
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DLI Workshop --
Dec 1999 7
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DLI Workshop --
Dec 1999 8
Data Service Models
• Begin by discussing data service
models within the framework of
three topics:
access and dissemination
aggregate data and microdata
statistics versus data
![Page 9: DLI Training Workshop - cudo.carleton.ca€¦ · data access projects Roundtable discussion about introducing data to our reference colleagues . DLI Workshop -- Dec 1999 7. DLI Workshop](https://reader034.vdocuments.site/reader034/viewer/2022051607/60317db6103e6165ec376100/html5/thumbnails/9.jpg)
DLI Workshop --
Dec 1999 9
Data Service Models
• Models were presented as a continuum
during the 1997 DLI workshop
“Order & Pass-through” Service
Install Data and Provide Access
Treat as a Collection and Provide Reference
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DLI Workshop --
Dec 1999 10
Data Service Models
• Choose a model that matches your
staff and computing resources
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DLI Workshop --
Dec 1999 11
•
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
![Page 12: DLI Training Workshop - cudo.carleton.ca€¦ · data access projects Roundtable discussion about introducing data to our reference colleagues . DLI Workshop -- Dec 1999 7. DLI Workshop](https://reader034.vdocuments.site/reader034/viewer/2022051607/60317db6103e6165ec376100/html5/thumbnails/12.jpg)
DLI Workshop --
Dec 1999 12
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
![Page 13: DLI Training Workshop - cudo.carleton.ca€¦ · data access projects Roundtable discussion about introducing data to our reference colleagues . DLI Workshop -- Dec 1999 7. DLI Workshop](https://reader034.vdocuments.site/reader034/viewer/2022051607/60317db6103e6165ec376100/html5/thumbnails/13.jpg)
DLI Workshop --
Dec 1999 13
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
![Page 14: DLI Training Workshop - cudo.carleton.ca€¦ · data access projects Roundtable discussion about introducing data to our reference colleagues . DLI Workshop -- Dec 1999 7. DLI Workshop](https://reader034.vdocuments.site/reader034/viewer/2022051607/60317db6103e6165ec376100/html5/thumbnails/14.jpg)
DLI Workshop --
Dec 1999 14
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
![Page 15: DLI Training Workshop - cudo.carleton.ca€¦ · data access projects Roundtable discussion about introducing data to our reference colleagues . DLI Workshop -- Dec 1999 7. DLI Workshop](https://reader034.vdocuments.site/reader034/viewer/2022051607/60317db6103e6165ec376100/html5/thumbnails/15.jpg)
DLI Workshop --
Dec 1999 15
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
![Page 16: DLI Training Workshop - cudo.carleton.ca€¦ · data access projects Roundtable discussion about introducing data to our reference colleagues . DLI Workshop -- Dec 1999 7. DLI Workshop](https://reader034.vdocuments.site/reader034/viewer/2022051607/60317db6103e6165ec376100/html5/thumbnails/16.jpg)
DLI Workshop --
Dec 1999 16
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
![Page 17: DLI Training Workshop - cudo.carleton.ca€¦ · data access projects Roundtable discussion about introducing data to our reference colleagues . DLI Workshop -- Dec 1999 7. DLI Workshop](https://reader034.vdocuments.site/reader034/viewer/2022051607/60317db6103e6165ec376100/html5/thumbnails/17.jpg)
DLI Workshop --
Dec 1999 17
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
Acquisition
Fill a Request
Locate data
Order data & documentation
Collection Development
Select & Locate data
Order data & documentation
Catalogue data & documentation
Install & Store (data & documentation)
Reference
Search for data
Interpret documentation
Retrieve or download data
Process data
change formats
subset cases or variables
aggregate cases
merge files
analyze data
Find a referral partner on campus
![Page 18: DLI Training Workshop - cudo.carleton.ca€¦ · data access projects Roundtable discussion about introducing data to our reference colleagues . DLI Workshop -- Dec 1999 7. DLI Workshop](https://reader034.vdocuments.site/reader034/viewer/2022051607/60317db6103e6165ec376100/html5/thumbnails/18.jpg)
DLI Workshop --
Dec 1999 18
1.
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DLI Workshop --
Dec 1999 19
The Inventory Model
• In the traditional inventory model,
roughly half of the support goes to
putting items on the shelf, while the
other half goes to finding and getting
the items off the shelf.
Source: Darlene Fichter
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DLI Workshop --
Dec 1999 20
The Access Model
• With the access model, support is
split between getting information into
a deliverable state and finding
appropriate ways of retrieving and
disseminating the information.
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DLI Workshop --
Dec 1999 21
Access/Dissemination Issues
• managing vendor licenses
are the license conditions realistic?
what type of identification or
authentication is required?
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DLI Workshop --
Dec 1999 22
Access/Dissemination Issues
• matching products with technology
is the product dependent on a
specific operating system?
is the product software dependent?
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DLI Workshop --
Dec 1999 23
Access/Dissemination Issues
• determining access methods
stand-alone, lan or wan?
what are the finding tools?
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DLI Workshop --
Dec 1999 24
Access/Dissemination Issues
• determining dissemination options
what are the output formats?
does the output require special
storage considerations?
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DLI Workshop --
Dec 1999 25
The Access Model
• These issues and others about
access and dissemination will
underlie our discussions over the
next two days.
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DLI Workshop --
Dec 1999 26
2.
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DLI Workshop --
Dec 1999 27
Data Types
In the 1997 DLI workshop time was
spent discussing differences
between aggregate data and
microdata.
Each type has an impact on data
access models.
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DLI Workshop --
Dec 1999 28
Aggregate Data
Aggregate data consist of statistical summaries derived from original data collections and organized in tables according to the following properties:
• socio-economic phenomena
• spatial representation
• time
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DLI Workshop --
Dec 1999 29
Aggregate Data
Statistical summaries
• these summaries take the form of
counts, totals, sums, averages or
percentages
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DLI Workshop --
Dec 1999 30
Age and Sex are displayed
Spatial representation and Time are fixed
Cells contain counts
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DLI Workshop --
Dec 1999 31
Spatial representation and Age are fixed
Year and Sex are displayed
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DLI Workshop --
Dec 1999 32
Geography and Sex are displayed
Age and Time are fixed
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DLI Workshop --
Dec 1999 33
Aggregate Data
Aggregate data products
• usually stored as a series of related
tables in some type of database
structure requiring special retrieval
software (examples from STC include
C86, C91, CBP, CANSIM, etc.)
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DLI Workshop --
Dec 1999 34
Microdata
Microdata are
• usually anonymised records of actual respondents from a survey
• unsummarized, i.e, observations in the form in which the data were collected
• in a raw format requiring some form of processing, typically a flat ASCII file
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Microdata: Cases 3 & 4 from the GSS 2 Main File
0000312141100119820012122222210020982001212222224011
21111241112121112205020197111971021212222225211026121
2043001409557204113130221119999019787878797022214112
7141240031500061661123222222222111117262616221222266
6666636212000000020320222224222000022204141101101102
1111111221110000002100000000021000000000100000000002
00000423300200200100000100200
0000411001100111011021222222210020092002122222220211
11111231212111211208120193811938044122222221111052201
203901007504721031191012233520406058787870304221303
4207083004000014200071112221222117215756565655555556
66666656565000555500210222111111110000001111100001101
1122121221110110101100001101011000000000000000000000
00000000000000000000000000000
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000041144504000800024010000000012518733
000041144308000900006011222220012518733
000041141709000930003031222220012518733
000041141709301100009031222220012518733
000041141211001330015011222220012518733
000041149113301630018011222220012518733
000041141216301800009011222220012518733
000041143018002000012031222220012518733
000041147920002015001541222220012518733
000041143720152130007531222220012518733
000041147921302145001542221220012518733
000041144321452200001512221220012518733
000041147522002300006012221220012518733
000041144523002800030010000000012518733
Microdata: First 14 Cases from the GSS 2 Episode File
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DLI Workshop --
Dec 1999 37
Impact on Data Access
Aggregate data have been processed and organized in a database structure
• must locate the table with desired data
• must deal with each database structure
• must deal with accompanying retrieval software
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DLI Workshop --
Dec 1999 38
Impact on Data Access
Microdata data must be processed or subset for subsequent processing
• must identify desired variables and cases (data documentation)
• must deal with the raw data file structure
• must address the issue of desired formats
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DLI Workshop --
Dec 1999 39
Impact on Data Access
• These and others differences between aggregate data and microdata will be part of our discussions about data access, also.
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DLI Workshop --
Dec 1999 40
3.
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DLI Workshop --
Dec 1999 41
Statistics versus Data
The term statistics is commonly used
to describe the numeric summaries,
such as counts, totals, sums and
averages, that people use to make a
point in a study or report.
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DLI Workshop --
Dec 1999 42
Statistics versus Data
The term data refers to numeric files containing a collection of raw information with many observations that can be analyzed from a variety of perspectives.
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DLI Workshop --
Dec 1999 43
Statistics versus Data
Typically, generalizations are drawn from analyses of a data file.
For example, the information provided by all of the individuals in a survey is considered to be data, while the percent of respondents in a survey with a university degree is a statistic.
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DLI Workshop --
Dec 1999 44
Blurring Statistics and Data
In the print world, statistical information is usually found in statistical abstracts, census monographs and serial publications by government agencies.
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DLI Workshop --
Dec 1999 45
Blurring Statistics and Data
In the digital world this numeric information is now appearing with electronic table access on CD-ROM, the Internet, or in electronic journals.
Many aggregate data products now
fall in this category.
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DLI Workshop --
Dec 1999 46
Blurring Statistics and Data
In other instances, the responses in the microdata file of a survey may provide the answer to a statistical question.
• For example, the percentage of the population in Canada with high blood pressure may be determined from the National Population Health Survey.
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DLI Workshop --
Dec 1999 47
Impact on Data Access
• The use of aggregate data products and microdata files to answer statistical questions will also contribute to our discussions about data access.
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Context for Aggregate Data
• Simplifying access to aggregate data is partially driven by a desire to use these products to answer general statistics questions.
• The demand for facts and figures at the reference desk remains constant or steadily increases.
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Aggregate Data Challenges
• The challenges of creating access to aggregate data were summarized earlier.
finding a table with the desired statistics
dealing with each database structure
coping with a variety of retrieval software
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DLI Aggregate Data Sources
• Four major DLI aggregate data products have been chosen for this workshop.
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DLI Aggregate Data Sources
• CANSIM is a major source for economic and social data that are organized in time series.
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DLI Aggregate Data Sources
• E-STAT offers a simplified interface to a selected subset of CANSIM and some additional aggregate data that have been identified as useful in teaching.
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DLI Aggregate Data Sources
• The 1996 Census aggregate data files are a particularly important collection because these electronic tables contain more statistical information than is available for the Census in print.
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DLI Aggregate Data Sources
• The Health Indicators Database is a compilation of tables from several sources to provide a single-access tool about health status in Canada.
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DLI Aggregate Data Sources
• These four aggregate data products are good candidates for every DLI member to have.
Now let’s turn to the comparative worksheet on these four products.