2011 Population Census of Hong Kong Interactive Data

2011 Population Census of Hong Kong - Interactive Data Dissemination Service 27 -29 November 2012 John Hon-kwan LAM Census and Statistics Department Hong Kong

BACKGROUND Hong Kong’s Population Census Since 1961 Conducted every ten years Population By-census conducted in the middle of the intercensal period Latest round of Population Census 30 June – 2 August, 2011 (34 days) 2

DISSEMINATION OF CENSUS DATA IN HONG KONG Considerations Usefulness of data Convenience and ability of users to use and interpret the statistics properly Technology advancement Data confidentiality Public awareness and accessibility of users Consultations with major users Government Bureaux and Departments Academics and other organisations 3

MAJOR DATA DISSEMINATION CHANNELS Press conference Analytical publications and feature articles Main tables and district-based fact sheets Interactive visualisations (Dashboards) Tailor-made tabulations Access to micro-data Interactive Data Dissemination Service (IDDS) 4

MAJOR DATA DISSEMINATION CHANNELS Using the Internet The launch of an online bookstore in Oct 2001 Ø Dedicated websites for data dissemination: Ø 2006 Population By-census (http: //www. bycensus 2006. gov. hk) Ø 2011 Population Census (http: //www. census 2011. gov. hk) 1990 s : CD-ROM bundled with GIS software 2008: Statistics on Map; Interactive Data Dissemination System (IDDS) Ø 5

IDDS Since 2008 Disseminate results of 2006 Population By-census Allow users to build statistical tables and charts per own requirements Internet-based Simple and user-friendly Step-by-step process Major Features Choosing the required statistical measure and analytical dimensions for tabulation; Specifying how the dimensions are classified and displayed; Customisation of the table built; Generation of chart/thematic map; Export table built in various file formats 6

MAJOR ASPECTS OF THE IDDS ENHANCED FOR 2011 POPULATION CENSUS AND Item Data enrichment IDDS for 2011 Population Census IDDS for 2006 Population By-census Ø Extended data coverage; More limitations due to Ø Allows users to produce resource constraints tables up to 5 dimensions on 2 types of statistical measures Temporal analysis Results of 2006 Population By Ø Comparisons of results of the -census only 2001 and 2011 Population Censuses and 2006 Population By -census are allowed 7

MAJOR ASPECTS OF THE IDDS ENHANCED FOR 2011 POPULATION CENSUS AND Item View as you click More user-friendly IDDS for 2011 Population Census IDDS for 2006 Population By-census Ø Table displayed immediately together with selection panels; Ø Enable users to view the content and interact with the system to make further selection NA Ø Table building process is simplified to reduce the number of clicks Ø Automatically provide the most detailed classification available Ø Pre-defined population/household groups for use as filtering; Ø Animated demonstration and user guide are available NA 8

MAJOR ASPECTS OF THE IDDS ENHANCED FOR 2011 POPULATION CENSUS AND Item More flexibility IDDS for 2011 Population Census IDDS for 2006 Population By-census Ø Tables up to 5 dimensions are Ø If the first specified allowed so long as the combination of dimensions is dimension has a very feasible; detailed classification e. g. Ø The system will automatically adjust the classification of some single age groups, many of dimensions so as to produce the other dimensions table as far as possible would become not available although the table could be produced when a less detailed classification (e. g. broad age group) is used. 9

MAJOR ISSUES FOR CONSIDERATION IN DEVELOPING THE IDDS Participation of major stakeholders Contributions of users, IT experts and statisticians Success of the IDDS Users ü Consultations with users (government departments and private sectors) ü Collection feedback on the use of the IDDS ü Use the IDDS on a trial basis before its launch Ø Design in a more user-centric manner Ø Further finetuning made before launch IT experts ü Make use of new technologies Ø Develop a secure and efficient web-based system Statisticians ü Ensure the production of detailed statistics efficiently for in-depth and proper understanding on the characteristics of the population Ø Ensure the system to meet statistical needs of users 10

MAJOR ISSUES FOR CONSIDERATION IN DEVELOPING THE IDDS System based on macro-data or micro-data - Balance between Meeting user <==> Protecting data Requirements confidentiality Macro-data approach: n Only macro-data files containing summarised statistics are stored in the IDDS n Also helps reduce response time n To cater for data confidentiality, data precision and system workload, tables up to 5 dimensions and 2 statistical measures can be produced 11

MAJOR ISSUES FOR CONSIDERATION IN DEVELOPING THE IDDS Ease of use versus system complexity Trade-off between user-friendliness <==> functionalities n n Selection of statistical measure and dimensions is of upmost importance One-page user interface consisting three different panels p p p n selection of statistical measure selection of classification variables table A few advanced system functions available in the old IDDS (e. g. sorting by row and suppression of empty row or column) are not available 12

MAJOR ISSUES FOR CONSIDERATION IN DEVELOPING THE IDDS Flexibility for further data expansion Increased demand for access to wide scope of official statistics at more detailed level in an interactive and flexible manner Design is scalable and flexible for further expansion Importance of comprehensive system testing and workload estimation Any interruption in interactive public services may have longterm impact on organisational images System load tests should be performed several times before launch to ensure smooth function of the IDDS 13

WAY FORWARD Enhanced IDDS for 2011 Population of Hong Kong Since the launch in mid-September 2012, more than 2000 visits, generating more than 23 000 statistical tables To encourage the usage of IDDS through various promotion activities, including through regular publications, briefing to users in various occasions. Continue to monitor user feedbacks and introduce improvement, if necessary. Consideration will also be given to expanding the coverage of data to other themes of official statistics 14

THANK YOU!

STATISTICS ON MAP 16

INTERACTIVE VISUALISATIONS 17

IDDS FOR 2006 POPULATION BY-CENSUS 18 2021/12/12

ENHANCED IDDS FOR 2011 POPULATION CENSUS 19

CONCURRENT UPDATING UPON SELECTION 20

GROUPING 21