KE-05 - Requirements analysis
- Describe the need for user-centered requirements analysis
- Create requirements reports for individual potential applications in terms of the data, procedures, and output needed
- Assess the relative importance and immediacy of potential applications
- Synthesize the needs of individual users and tasks into enterprise-wide needs
- Differentiate between the responsibilities of the proposed system and those that remain with the user
- Illustrate how a business process analysis can be used to identify requirements during a GIS implementation
- Describe how spatial data and GIS&T can be integrated into a workflow process
- Evaluate how external spatial data sources can be incorporated into the business process
- Develop use cases for potential applications using established techniques with potential users, such as questionnaires, interviews, focus groups, the Delphi method, and/or joint application development (JAD)
- Document existing and potential tasks in terms of workflow and information flow
CV-18 - Representing Uncertainty
Using geospatial data involves numerous uncertainties stemming from various sources such as inaccurate or erroneous measurements, inherent ambiguity of the described phenomena, or subjectivity of human interpretation. If the uncertain nature of the data is not represented, ill-informed interpretations and decisions can be the consequence. Accordingly, there has been significant research activity describing and visualizing uncertainty in data rather than ignoring it. Multiple typologies have been proposed to identify and quantify relevant types of uncertainty and a multitude of techniques to visualize uncertainty have been developed. However, the use of such techniques in practice is still rare because standardized methods and guidelines are few and largely untested. This contribution provides an introduction to the conceptualization and representation of uncertainty in geospatial data, focusing on strategies for the selection of suitable representation and visualization techniques.