Public Sector Information
Public Sector Information
“From this year onwards, free online government information will be released in digital formats to encourage
development of more applications by start‐ups.”
The DATA.GOV.HK portal
Free government information in digital formats for commercial and
non‐commercial purposes
4000+datasets70+
apps70+apps
18categories
Mobile App with PSI
Datasets used: • Traffic Snapshot Images• Special Traffic News• Geo‐Referenced Public Facility
Mobile App with PSI
Datasets used: • Speed Map Panels• Journey Time Indicators• Traffic Snapshot Images• Special Traffic News
Mobile App with PSI
Datasets used: • FEHD Service Locations
Mobile App with PSI
Datasets used: • The 2011 Population
Census
Build and maintain the Data.Gov.HK portal
Provide guidelines on PSI dissemination
Monitor the progress of PSI dissemination
Roles of OGCIORoles of OGCIO
Advice BDs for quality assurance of PSI
Role of DepartmentsRole of Departments
Provide all PSI on websites
• Economic means for data storage and dissemination• Daily traffic snapshots of storage: 4MB • Daily download traffic: 80GB• Low Daily Cost
• Easy and convenient development platform• Built the prototype of infrastructure in 1.5 months• Efficient for proof of concept, load test, security test, etc.
• More potential with Cloud Computing• Serving APIs on cloud, etc.
How Does Cloud Computing Help ?How Does Cloud Computing Help ?
System InfrastructureSystem Infrastructure
• Use structured format such as CSV, JSON and XML to structure data appropriately and provide greater ease of data access
• Select formats that can be accessed by a wider variety of methods. E.g.: CSV , XML
• Select common open and non‐proprietary formats
Usefulness / Reusability
All PSI are Machine Readable and ProcessableAll PSI are Machine Readable and Processable
High Operability of PSIHigh Operability of PSI
Recommended Dataset FormatsRecommended Dataset Formats• With consideration of Interoperability • Open and non‐proprietary formats
Audio FLAC, M4A, MPC, MPP, MP+, OGG, OPUS, SPX, WAV, WV
Calendar ICAL, ICS, IFBData interchange JSON, XML
Document DOC, DOCX, FODT,ODT, PDF, TXT
Image APNG, EXR, GIF, JP2, PNG, SVG, SVGZ
Spreadsheet / Tabular data
CSV/TSV, ODS, FODS, XLS, XLSX
Video AVI, MKV, OGV
Some examples:
• Some proprietary formats have their specifications opened and they are considered as acceptable PSI dataset formats
• Examples:– Microsoft has its Word (DOC, DOCX) and Excel (XLS, XLSX) specifications open to the public under the Microsoft Open Specification Promise (OSP)
– A subset of PDF specifications PDF/X (i.e. ISO 15930‐1:2001) and PDF/A (i.e. ISO 19005‐1:2005) has been opened by Adobe
Acceptable Proprietary FormatsAcceptable Proprietary Formats
Dissemination MethodsDissemination Methods
Bulk Data Web API
• Details of EventHK Information
• Details of GovHK Notifications
• List of EventHK information
• List of GovHK Notifications• Approved Charitable Fund‐raising activities
Available Web API Available Web API
Comprehensive PSI datasets in good quality
The GuidelinesThe Guidelines
Recommended PSI dataset formats
Administration and technical process for PSI dissemination
Preparation & maintenance of PSI datasets
Thank You!