199. A primary aim of CSPA is to support efficient sharing and reuse of process patterns, information and services at an organization and international level.
200. One key requisite in achieving this goal is an ability to reliably and efficiently discover what is available for reuse to support a particular business need. This includes an ability to efficiently assess whether a potentially reusable artefact is, in fact, "fit for purpose" in practice when it comes to supporting that particular business need.
201. Catalogues of reusable resources have a key role within CSPA. They provide lists and descriptions of standardized artefacts, and, where relevant, information on how to obtain and use them. The catalogues can be at many levels, from global to local. For example, it is envisaged that each statistical organization will have catalogues of processes, information objects and Statistical Services.
202. However, for the purposes of this project, it is the global level that is the primary interest. The global catalogue is called the Global Artefact Catalogue. The Catalogue will provide information about resources and potential collaboration partners, helping to ensure that the modified component conforms to the requirements of CSPA. Governance and support mechanisms and processes will need to be defined to ensure the continued relevance and utility of the catalogues.
203.The catalogues should support the lifecycle management, governance and use of components and services, providing the right level of artefacts for service design, integration and transition to a production environment.
204.The catalogues are not designed to be platform specific, and will not necessarily hold copies of executable code. They will, however, provide all necessary information about how to access the artefacts, including contact details for further information. They should provide sufficient contents to support CSPA.
205.The Global Artefact Catalogue will also contain project plans which will include information about developments that are planned or in progress. This information will facilitate the creation of a global roadmap of statistical organizations developments that can be consulted to see which organizations are developing what and when. It will be developed during 2014 by CSPA Implementation project.
206. The types of artefacts in Catalogues are:
- Frameworks include artefacts such as the GSBPM and the GSIM
- Standards include GSIM Implementation, DDI and SDMX
- Policies supporting governance and use, for example "no changes to GSBPM or GSIM unless they are the result of a formal approval process"
- Guidelines concern the practical use and integration of artefacts. For example the functionality of Statistical Services (especially interfaces) and descriptions of how to 'plug' component in
- Project plans about developments, in progress or planned, to promote collaboration at the earliest possible stage in the development of artefacts, e.g. "Statistics New Zealand aim to develop and make available component X by (date)". This will provide the basis for a global roadmap.
- Analysis and metrics of real life implementations of services or architectural principles
- Other knowledge assets could include architectural principles and information on how to use the catalogues
207. The Information Architecture will guide the approach to defining, populating and using catalogues. This will include identifying and reusing appropriate reference frameworks related to registries. (These reference frameworks, unlike GSIM, are not specific to statistical production.)
208. The exact details of the governance of CSPA are still being discussed. In the following paragraphs, the current thinking is outlined in terms of the groups involved and the role they will play.
High-Level Group for the Modernization of Statistical Production and Services (HLG)
209.CSPA is being developed as a project overseen by HLG. This group will be the custodians of the outputs. Whilst the architecture itself will be "owned" by the international official statistics community, it will be administered by the HLG, as top-level representatives of that community.
HLG Executive Board
210. The HLG Executive Board will be responsible for the strategic management of on-going HLG projects. It will also prepare new project proposals for agreement by the HLG, and seek support and resources from interested organizations. Following the completion of a project, the board will monitor, and where necessary, coordinate the implementation or use of the project results.
211. In particular regard to CSPA, this group will take a strategic view on where investments into Statistical Services could be made internationally. For example, they may decide that the statistical industry has a particular gap around a capability or activity such as confidentiality. The group would look at what international collaboration could be undertaken to fill this gap. The Modernization Committee on Production and Methods will provide input into these discussions
Modernization Committee on Production and Methods
212. The UNECE, on behalf of the international statistical community will provide leadership for maintaining and extending CSPA to retain its relevance and value as an 'industry asset' through the Modernization Committees.
213.Creating CSPA V1.0 is only the first part of the story. It is likely that the architecture, or elements of it, will need to be revised and refined from time to time to ensure continued relevance. As the architecture will be a common asset for the international official statistics community, there will need to be a clear and transparent process for change management.
214. For practical purposes, proposals for changes will usually be discussed in the Modernization Committee or a specific task team under the Modernization Committee. These groups will then formulate recommendations for change, which will typically be bundled together as a package to be formally signed off.
215.The HLG, Executive Board and the Modernization Committee will need to carefully balance the advantages of change, in terms of increasing relevance and usefulness, against the costs of having to implement those changes within statistical organizations. A reasonable degree of stability over time is therefore a key requirement for the architectural framework.
Architecture Review Board
216. It is proposed that a task team is set up under the umbrella of the Modernization Committee on Production and Methods. The members of this task team will be drawn from a range of backgrounds including IT, methodology and standards.
217. This group will be available to provide advice to statistical organizations who are building Statistical Services. This may take the form of reviewing the GSIM implementation that is being proposed, interpreting how to apply CSPA to a particular situation, amongst other things.
218. When a statistical organization wishes to add a Statistical Service to the Global Artefact Catalogue, they will be asked to complete a self assessment of how their Statistical Service aligns with CSPA. Then the review team will assess the service and add it to the catalogue if appropriate
219. Figure 10 summarizes these groups and roles.
Figure 10: A proposal for CSPA Governance structure