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New technologies used in 2010 Census Round – Polish case study

This case study explores the use of new technologies in the 2010 Census Round in Poland, focusing on the implementation of the IT Census System. The system integrated various technologies to enhance data collection, processing, and reporting, including the use of administrative sources and data from statistical surveys. The architecture of the IT Census System included components such as the Metainformation Subsystem, Operational Microdata Base, Analytical Microdata Base, and Geostatistics Portal. By utilizing GIS technology and various data processing infrastructure, the census was able to improve data accuracy and efficiency.

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New technologies used in 2010 Census Round – Polish case study

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  1. New technologies used in 2010 Census Round – Polish case study Janusz Dygaszewicz Director of Central Census Bureau Geneva, 30 September – 03 October 2013

  2. Data collection channels in 2010 Census Round

  3. CAxI CAXI

  4. Mixed Model for Census Mixed model - a combination of data from administrative sources with dataacquiredfrom statistical surveys

  5. The use of administrative sourcesincensus Data from administrative systems was used in the census: • as a direct source of census data (personalisation of questionnaires) • to create: • compilations of buildings, dwellings and persons list • an address-residence register • a sampling frame

  6. Census architecture - The IT Census System For the purposes of census design and conduction, the Central Statistical Office of Poland implemented the IT Census System (ISS) The ISS integrated various technologies (from Internet data collection portal, applications installed on mobile terminals, through applications managing field works and assisting in telephone interviews, to specialist microdata bases, data warehouses up to analytical and reporting tools)

  7. PublicArea

  8. Data processinginfrastructure XML Registry 1 CAXI TXT Questionaries Registry 2 ETL Tools OperationalMicrodataBase AnalitycalMicrodataBase Golden Record Statistical Files SDMX Files Registry n Metadata Metadata Metadata XML Metadataserver Portal

  9. Census architecture - The IT Census System For thecensuspurposeswereimplementedthefollowing systems: • The Metainformation Subsystem gathered indispensable metainformation describing data and census processes. The task of the Metainformation Subsystem was to ensure the coherent definition of statistical objects for the OMB and AMB. • TheOperational Micro Data Base (OMB) - system included hardware-system-tool infrastructure (computer hardware, system software, software tools) and applications (computer programs that are the result of programming work). This base enabled the inclusion of data transmitted in electronic form through four informational channels by entities and to conduct further data processing. In the OMB there took place processes connected with the control, correction, and linking of data, up to their complete cleansing. Next, depersonalised data were transferred to the Analytical Microdata Base (AMB).

  10. Census architecture - The IT Census System • The role of the Analytical Microdata Base is to store depersonalised census data in their final form. In this dataset every type of statistical analyses is carried out to acquire results for publication, i.e. the census products. The AMB allows all the recipients of statistical information to quickly acquire data in the form of tables, aggregatesand hypercubes. The AMB system constitutes an analytical and reporting platform that currently enables the statistical preparation of the outcome data from the National Population and Housing Census 2011. The results of analyses in the form of documents, reports and breakdowns are shared with internal and external users. The AMB also allows the calculation of spatial analysis and aggregates available in the Geostatistics Portal as maps (cartograms and cartodiagrams).

  11. CAII method system OBM Onlinequestionnaire system Offlinequestionnaire ZKS Downloading the application file Internet Email Online Electronic media Browser Online method Offline method

  12. Self-enumeration by Internet filling the questionnaire by the respondent • Identification Used to confirm the identity of the respondent. • Entering identification data in a questionnaire(PIN code – (PESEL, NIP) first name, last name) or additional authentication qualities (f.ex. a place of birth, mother’s maiden name) • Establishing a new password which jointly with PESEL was the basis of authentication within 14 days

  13. The most significant functionality of Call Center Confirming the identity of the interviewer/census enumerator Interviewing Arranging visits by census enumerators Hotline

  14. CAPI method system Dispatchingapplication - server - OBM Communicationserver ZKS Management of a terminal Map server DedicatedAPN Mobile network WAN CSO Statistical Office Cryptographic SIM card Module GPS Dispatching application - client - Mobile application

  15. GIS Technology In 2010 Census Round a combination of data coming from administrative registers and geographic sources containing spatial data was linked with statistical data for the first time.

  16. Address point identificationsystem

  17. Spatial address pointIdentification system

  18. Spatial data compiled in the statistics today

  19. The digital maps based on the GIS technology wereused during:

  20. Enumerator – GIS technology Map module - GIS • Ortophotomap • Cadastral Data • AssignedTasks • StartedTasks • CompletedTasks

  21. Geostatistics Portalgeo.stat.gov.pl • 5’ grid • 1 km2 grid • administrative division • urban division • statistical division • any other polygon

  22. Thematic map – region (NUTS1) level

  23. Thematic map – voivodeship (NUTS2) level

  24. Thematic map – subregion (NUTS3) level

  25. Thematic map – county (LAU1) level

  26. Thematic map – municipality (LAU2) level

  27. Cartodiagrams-Choropleths and Proportionalsymbols

  28. Census organisation support systems • Implementation of the Notification System and the Knowledge Basefacilitated effective communication with all members of the census organizations: • In the Notification System, several thematic sections, so-called projects, were created. Each project encompassed a selected thematic area. • In the Knowledge Base were gatheredup-to-date versions of documents, including instructions, training materials, and the operational schedule. • To ensure effective management of the remote enumerator instruction process, the m-learning application was employed. It was installed on mobile terminals.

  29. Census staff organisation

  30. Summary The census in Poland turned out to be innovative project not only countrywide but also worldwide on grounds of the following facts and figures: • simultaneous data collection, without paper, from four differentchannels (i.e. administrative registers, Internet self-enumeration (CAII), direct interviews conducted by census enumerators, using electronic questionnaires (CAPI), and telephone interviews conducted by statistical interviewers (CATI)) was used and implemented on such a large scale for the first time in Europe, • data from 27 administrative registers and 3 non-administrative systems were effectively integrated, • paper questionnaires were completely eliminated, and were replaced by ICT solutions,

  31. Summary • the use of GIS technology helped to conduct the census preparatory work and an ongoing census process monitoring and give possibility to compile and present census results based on multi-dimensional spatial analyses • IT Census System comprised a number of solutions ensuring the high level of security of the processed data, • the modern statistical data processing technologies have been developed – they will have a considerable influence on the methodology of on going and future statistical surveys,

  32. Instead of a conclusion Census in 2002 Census 2011 18 thousands of census enumerators 0 questionnaires 0 tons of papers ca. 40 mln € less better data the more reliable results Infrastructure for statistical surveys in the future • 180 thousands of census enumerators • 120 mln of questionnaires • 1 000 tons of papers • At the end shredding census questionnaires

  33. Central Statistical Office - Poland Thank you for your attention Janusz Dygaszewicz Director of Central Census Bureau POLAND

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