Quality of Service and Experience DWG
Kralidis, Tom (Environment and Climate Change Canada)
Rinne, Ilkka (Spatineo Oy)
The standardisation work by the Open Geospatial Consortium (OGC) has greatly influenced how computers and software from different vendors are able to handle and exchange spatial information. Still, the product level functional standards compliance alone is not enough to guarantee a fully functional and reliable networked systems in the real world: Even the best products can be configured and connected sub-optimally, making them inefficient, unreliable and difficult to use. As any computer systems, the spatial data servers and clients also suffer from occasional technical failures and connectivity problems, resulting in degraded experienced quality from the user perspective.
The key factor for systematically improving the experienced Quality of Service (QoS) is to constantly measure it using well-defined and consistent metrics. Harmonisation of the QoS measurement and presentation of SDI components implementing different Spatial Data Service standards makes it easier to get a complete picture of the Quality of Service of the entire Spatial Data Infrastructure, and more effectively maintain high Quality of Experience for its end users.
Metadata for Spatial Data Services, such as titles and keywords, is not always written in clear and understandable language considering the end users, or it does not describe the provided services and data sets in necessary detail. This makes it more difficult for the users to fully take advantage of the provided service and it's datasets. Other major factor for bad user experience for Spatial Data Services is insufficient quality of the provided data for a particular use case. Even the highest level of provided service or user friendliness is not able to compensate for problems caused by data that is inaccurate, self-contradictory, incomplete or otherwise unsuitable for a particular need. The issues related to the quality of presenting the Spatial Data Services and the making them more user-friendly falls under Quality of Experience (QoE).
The OGC Quality of Service and Experience DWG (QoSE DWG) provides a forum for discussing issues related to Quality of Service and Quality of Experience of Spatial Data Services and applications relying on these services for delivering timely and accurate spatial information to the end users. Key business goals of the Working Group include the following:
- Sharing implementation experience and ideas in evaluating and improving QoS and QoE of Spatial Data Services.
- Creating clear guidance and, if appropriate, agreements on how to communicate QoS levels of the OGC Spatial Data Services, and thus encourage the software providers implement a consistent way to enable machine-readable QoS declarations.
- Collect best practice, create and promote guidance on evaluating and self-assessing the Quality of Experience of Spatial Data Services, and practical means for improving the user experience of these services.
- Identify gaps in the existing standards and guidance related to QoS and QoE of Spatial Data Services, and as appropriate, suggest new standardisation activities within OGC to fill those gaps.