Eliciting the requirements for a proposed system typically involves different stakeholders with different expertise, responsibilities, and perspectives. Viewpoints-based approaches have been proposed as a way to manage incomplete and inconsistent models gathered from multiple sources. In this paper, we propose a category-theoretic framework for the analysis of fuzzy viewpoints. Informally, a fu...

One of the problems a requester faces when crowdsourcing a microtask is that, due to the underspecifie or ambiguous task description, workers may misinterpret the microtask at hand. We call a set of such interpretations worker viewpoints. In this paper, we argue that assisting requesters to gather a worker’s interpretation of the microtask can help in providing useful feedback to designers, who...

Viewpoints are coherent collections of facts that describe a concept from a particular perspective. They are essential for a wide variety of tasks, such as explanation generation and qualitative modeling. We have identified many types of viewpoints and developed a program, the View Retriever, for extracting them from knowledge bases, either singly or in combinations. The View Retriever provides...

For many practical applications that use camera images and active viewpoint selection to create telepresence it is important to restrict the number of selectable viewpoints. Previous experiments showed that the Delft Virtual Window System can be adapted to work with a small number of selectable viewpoints. For simple scenes and a connectivity task, only three viewpoints proved sufficient, altho...

We present a field study aimed at analysing the use of viewpoints in codesign meetings. A viewpoint is a representation characterised by a certain combination of constraints. Three types of viewpoints are distinguished: prescribed viewpoint, discipline-specific viewpoint and integrated viewpoint. The contribution of our work consists in characterising the viewpoints of various stakeholders invo...

Viewpoints are coherent collections of facts that describe a concept from a particular perspective. They are essential for a wide variety of tasks, such as explanation generation and qualitative model-ing. We have identiied many types of viewpoints and developed a program, the View Retriever, for extracting them from knowledge bases, either singly or in combinations. The View Retriever provides...

This study focuses on how products are viewed by their users. In order to capture users’ viewpoints, we focused on how the virtual 3D model of a product was examined (rotated/translated/moved by the user). We attempt to understand these viewing mechanisms by focusing on the dynamics of shifting viewpoints and verbal features during the generation of product impressions. The notion of dynamics o...