David Modjeska

Canadian Institute for Health Information | CIHI · Analytical Tools and Techniques

Coarse-grained approaches to customization allow the user to enable or disable groups of features at once, rather than individual features. While this may reduce the complexity of customization and encourage more users to customize, the research challenges of designing such approaches have not been fully explored. To address this limitation, we con...

We identify several challenges in conducting a large-scale, online field study with 90 users of an open-source, integrated development environment. By reflecting on the benefits and challenges of specific methodological decisions and contextual constraints of this study, we hope to provide insight for other researchers designing similar types of st...

Hunter Gatherer is an interface that lets Web users carry out three main tasks: (1) collect components from within Web pages; (2) represent those components in a collection; (3) edit those component collections. Our research shows that while the practice of making collections of content from within Web pages is common, it is not frequent, due in la...

Introduction: Bodies in Space This chapter outlines an approach to designing information spaces that we call experiential design, and illustrates the approach with examples of our recent work. The main virtue of this approach is that it claims to draw on universal primitives in the way people understand things, events, relationships -- and informat...

With advances in computer graphics, a number of innovative approaches to information visualization have been developed (e.g., Card et al, 1991). Some of these approaches create a mapping between information and corresponding structure in a virtual world. The resulting virtual worlds can be fully three dimensional (3D) or they can be implemented as...

This chapter outlines an approach to designing information spaces that we call experiential design, and illustrates the approach with examples of our recent work. The main virtue of this approach is that it claims to draw on universal primitives in the way people understand things, events, relationships — and information. And because of this virtue...

Hunter Gatherer is an interface that lets Web users carry out three main tasks: (1) collect components from within Web pages; (2) represent those components in a collection; (3) edit those component collections. Our research shows that while the practice of making collections of content from within Web pages is common, it is not frequent, due in la...

Hunter Gatherer is a tool that lets Web users carry out three main tasks: (1) collect components from within Web pages; (2) represent those components in a collection; and (3) edit those collections. We report on the design and evaluation of the tool and contextualize tool use in terms of our research goals to investigate possible shifts in informa...

Hunter Gatherer is a tool that lets Web users carry out three main tasks: (1) collect components from within Web pages; (2) represent those components in a collection; and (3) edit those collections. We report on the design and evaluation of the tool and contextualize tool use in terms of our research goals to investigate possible shifts in informa...

. Desktop virtual reality (VR) offers a powerful environment for visualizing structure in large information sets. In well-designed virtual worlds, users can employ skills from wayfinding in the real world. This paper reports the development and testing of a series of prototype VR worlds, designed to support navigation during information visualizati...

The growing World-Wide Web requires scientific research to strengthen and extend design guidelines. Exploratory research was undertaken to investigate the relationship between (1) site size and structure and (2) user navigation and perception. Experimental results showed that strongly hierarchical sites are more usable; site size has little effect...

INTRODUCTION Navigation in virtual worlds is a relatively new phenomenon. Related real-world research comes from anthropology, psychology, and urban design (Lynch, 1960; Passini, 1984); related electronicworld research comes mainly from hypermedia (McKnight et al., 1991). Since information domains are abstract, a tension arises between semantic and...

Proper information visualization has always been viewed as an important tool for research. Traditionally, however, it was regarded as only a tool, with information content and visualization being analogous to an object and its representation, respectively. These days, visualization is increasingly seen as an integral part of information content, wi...

Desktop virtual reality (VR) offers a powerful environment for visualizing structure in large information sets. In well-designed virtual worlds, users can employ skills from wayfinding in the real world. The paper reports on the development and testing of a series of prototype VR worlds, designed to support navigation during information visualizati...

Proper information visualization has always been viewed as an important tool for research. Traditionally, however, it was regarded as only a tool, with information content and visualization analogous to an object and its representation, respectively. These days, visualization is increasingly seen as an integral part of information content, without...

Data Spaces), places visual features in an order-dependent way: 1. Districts are found by cluster analysis. 2. Edges are created quickly by drawing a line between the nearest neighbors in adjacent clusters. 3. Landmarks are determined by cluster centroid triangulation, a balanced and data-responsive method. 4. Nodes can first be chosen as gateways...

Relatively little research has been published about bibliographic visualization, although scientists, researchers, and students often have need for such technology. In this paper, we examine the functionality needed to visualize bibliographies effectively. After reviewing some existing tools, we present BIVTECI (Bibliographic Visualization Tool wit...

1.1 GENERAL Navigation is a fundamental human activity. It occurs in a wide range of activities and contexts, and it has accordingly been studied by a range of disciplines. In the social sciences, anthropologists have studied the tools and techniques of different cultures, including Western ones. Psychologists have studied the cognitive structures...

Current World Wide Web browsers, e.g., Mosaic and Netscape, support users primarily in the task of browsing the Internet. In some situations, users want to explore topics for which relevant information may reside both on a large local database and on the Web. The MultiSurf project seeks to deal with these situations by integrating text browsing of...

With rapid advances in multimedia technology, people navigate increasingly often through three-dimensional electronic storehouses to obtain information. Though searching or browsing an elec-tronic world may not seem problematic at first glance, users easily become disoriented, especially in large environments (Furnas, 1997). Moreover, navigation ma...

Thesis (A.B., Honors)--Harvard University, 1982. Includes bibliographical references (leaves [1]-2 (3rd group)).

Navigation is central to information seeking in electronic worlds. Previous research on the physical world and virtual ones has considered the impact of environmental structure on navigation and learning. Such structure can be either spatial or textual. I propose an exploratory study to evaluate the effects of combining spatial and textual represen...