Post on 12-Oct-2020
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Use of innovative technologiessuch as buildings geo-referencing
Dr Janusz Dygaszewicz
Director of ICT Systems, Geostatistics and Census Department
President of European Forum for Geography and Statistics EFGS
Member of Executive Committee of the UN-GGIM: Europe
08.04.2019 Bucharest
230 years history of Polish statistics
• 1789 - first countrywide population census in Poland
(based on registers!! )
– The register of nobility and burghers
– The parish register of births and deaths
• 1918 - establishment of Central Statistical Office (CSO)
• 100 years of continued existence of CSO Poland.
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Combining Census a combination of data from administrative
sources
(full survey covering basic demographic variables)
with data acquired from
ad-hoc 20% sample survey.
In 2011 - Mixed Model for Population and
Housing Census
3 3
• Including spatial data reference registersAdministrative Sources
• CAII (CAWI) – Computer Assisted Internet InterviewSelf-enumeration by Internet
• CATI - Computer Assisted Telephone Interview (Call Center)Telephone Interview
• Registered on hand-held terminals with usage GPS and GIS serviceCAPI - Computer Assisted Personal Interview
Face-to-face Interview with respondents executed by the
census enumerators
Data collection channels in 2011 Census
Round
44
• CAII/CAWI - Computer Assisted Internet Interview,
• CAPI - Computer AssistedPersonal Interview,
• CATI - Computer AssistedTelephone Interviewing.
CAxI
CAxI
CAXI
5 5
6stat.gov.pl
Census in 2011
Benefits of resigning from paper forms for mobile applications:
better data security,
user-friendly application,
better quality of data in the form,
additional quality control of data from registers.
7stat.gov.pl
Plan:
• obtainment more responses in CAWI channel – at least 60%,
• usage a clear, easy, short census form (at most about 20questions) and a friendly IT environment,
• popularization of the census based on modern tools andcommunication channels,
Effect:
• implementation of a full survey instead of a representativeone,
• 5-fold reduction in the number of enumerators in relation tothe 2002 census (traditional census),
• reducing the costs of the census in relation to the 2011census.
Concepts of census implementation in 2021
8stat.gov.pl
0
0,5
1
1,5
2
2,5
3
3,5
4
3,8
3,54
2,69
Co
sts
in U
SD
Cost of the census per capita (USD)
NSP 2002 NSP 2011 NSP 2021
9stat.gov.pl
Plans after 2021
• Improve and use of registers and update them after
2024 for other statistical purposes
• Participation in the work of international task forces and
working groups on the methodology of future censuses
• Active efforts carried out on the international forum to
increase the scope of information sources to the census,
for example Big Data
• For that purpose, the reference geodetic data obtained from the State geodetic and cartographic resources, contained:
• Administrative division boundaries,
• Geographical Names,
• Topographic Data Base,
• Cadastral Data,
• Ortophotomap
were used.
The good cooperation between NMA and NSI is crucial !!
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GIS in Polish official statistics
Reference materials
• Ortophotomap,
• Cadastral Data,
• Administrativedivision borders,
Primary:
• LPIS (Land Parcel IdentificationSystem),
• Road and street network(commercial),
• Geographical Names.
• Topographic Data Base.
Secondary:
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Information technologies
Reference geodeticmaps
Computer visualisation of spatial
databases
Integration statistics and geodetic data
Statistical data
Innovative production process of statistics
based on Big Data
Address points database
• address points with x,y coordinates
Administrative and Statistical division boundaries
• Statistical regions
• Census areas
Statistical address points
and building location
address locations for buildings with dwellings
needed for spatial analysis of census data in Poland
• to navigate enumerators
• to visualize census results on maps
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The TERYT system as the basis for
geocoding of address register and building
register on x,y coordinates
Address point identification system
Address point identification system
Best practice of geocoding
• Geocode as precisely as it is possible;
• Collect statistical data with reference to an address points (the best!) or smallest enumeration area (EA);
• All address points are referenced to pair of x,y coordinates;
• Official statistics no longer limited to publishing data for administrative o statistical units;
• Remember: x,y geocoding is a fundament for multidimensional spatial analyses.
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x,y geocoding
x,y geocoding is crucial in all three stages of the census:
• the preparatory works,
• management of enumerators during the fields works,
• and for multidimensional spatial analysis.
X,Y geocoding eliminate not only the necessity to recalculate
data when administrative boundaries are changing but also
allowing easy aggregation and processing of statistical data in
any chosen area - even for the GRID based dissemination,
Using Geospatial component in the census:
GIS support for the dispatcher:
• presenting the sampled address points on maps
• displaying the interviewer's on-line position on maps
Enumerator
tracking
The GIS application for field operations
- handheld devices
Enumerator – GIS technology
•Map module - GIS
•Ortophotomap
•Cadastral Data
•Assigned Tasks
•Started Tasks
•Completed Tasks
Enumerator: main duties
• Visiting all assigned holdings
– Filling electronic questionnaires
• Daily synchronisation
• Contact with the supervisorin terms of task scheduling
• Adding newly identified holdings
Alarm procedure
• In emergency situations, enumerators have a possibilityof sending an alarm signal to their supervisors
• Alarm notice is sentto the supervisor applicationand via SMS to the supervisor
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GEO.STAT.GOV.PLSTART: JULY 2013
Census results: Choropleth maps, Diagram maps
Local Data Bank
Other statistical databases34
The portal allows statistical data presentation in form of any spatial unit:
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• 5’ grid
• 1 km2 grid
• administrative division
• urban division
• statistical division
• any other polygon
Geostatistics Portal
Demographic data in 1 km2 grid
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(persons)
Copyright© 1997-2015. The Trustees of Columbia University in the City of New York.
Global pupulation distribution
„The 10 Level Model”u
niq
ue
iden
tifi
ers
syst
em
38 Personal proposition of Janusz Dygaszewicz CSO Poland
Geostatistics portals
INSPIRE
Global Statistical Geospatial Framework GSGF
Accessible
& Usable
Interoperable data and
metadata standards
Common geographies
for dissemination of statistics
Geocoded unit record data
in a data management environment
Use of fundamental geospatial infrastructure and geocoding
„The 10 Level Model” for
harmonization of
statistical and
geodesy reference
framework
Generic Statistical Business Process Model UNECE/Eurostat/OECD
3.1 Build collection
instrument
3.2 Build or enhance
process components
3.3 Build or enhance
dissemination components
3.4 Configure workflows
3.5 Test production
system
3.6 Test statistical
business process
1.1 Identify needs
1.2 Consult &
confirm needs
1.3 Establish output
objectives
1.4 Identify concepts
1.5 Check data availability
1.6 Prepare business
case
2.1 Design outputs
2.2 Design variable
descriptions
2.3 Design collection
2.4 Design frame &
sample
2.5 Design processing
& analysis
2.6 Design production
system & workflow
1
Specify Needs
2
Design
3
Build
4
Collect 5
Process
6
Analyse
8
Evaluate
7
Disseminate
Quality Management/Metadata Management
4.1 Create frame & select sample
4.2 Set up collection
4.3 Run collection
4.4 Finalise collection
5.1 Integrate data
5.2 Classify & code
5.3 Review & validate
5.4 Edit & imput
5.5 Derive new
variables & units
5.6 Calculate weights
5.7 Calculate
aggregates
5.8 Finalise data files
6.1 Prepare draft
outputs
6.2 Validate outputs
6.3 Interpret &
explain outputs
6.4 Apply disclosure
control
6.5 Finalise outputs
7.1 Update output
systems
7.2 Produce
dissemination products
7.3 Manage release of
dissemination products
7.4 Promote
dissemination products
7.5 Manage user
support
8.1 Gather evaluation
inputs
8.2 Conduct evaluation
8.3 Agree an action
plan
3.7 Finalise production
system
4.1 a Geocode frame &
sample
4.3 a Geocode collection
6.2 a Prepare spatial
analyses & maps
2.5a Design geocoding frame, sample & data collection
7.2 a Manage spatial
analyses & maps using GIS
41stat.gov.pl
Janusz Dygaszewicz
ICT Systems, Geostatistics and Census Department
j.dygaszewicz@stat.gov.pl
Thank you for your attention