James Schaffer

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—The web has evolved in a scale free manner, with available information about different entities developing in different forms, different locations, and at massive scales. This paper addresses the cognitive limitations that information analysts typically experience as they approach the boundaries where automated analysis algorithms are sorely needed. An(More)
OBJECTIVE We investigated how increases in task-relevant information affect human decision-making performance, situation awareness (SA), and trust in a simulated command-and-control (C2) environment. BACKGROUND Increased information is often associated with an improvement of SA and decision-making performance in networked organizations. However, previous(More)
In many of today's online applications that facilitate data exploration, results from information filters such as recommender systems are displayed alongside traditional search tools. However, the effect of prediction algorithms on users who are performing open-ended data exploration tasks through a search interface is not well understood. This paper(More)
Explanation and dynamic feedback given to a user during the recommendation process can influence user experience. Despite this, many real-world recommender systems separate profile updates and feedback, obfus-cating the relationship between them. This paper studies the effects of what we call hypothetical recommendations. These are recommendations generated(More)
User interface (UI) composition and information presentation can impact human trust behavior. Trust is a complex concept studied by disciplines like psychology, sociology, economics, and computer science. Definitions of trust vary depending on the context, but are typically based on the core concept of " reliance on another person or entity ". Trust is a(More)
—This paper discusses and evaluates the impact of visualization and interaction strategies for extracting quality information from data in complex networks such as microblogs. Two different approaches to interactive visual representations of data are discussed: an interactive node-link graph and a novel approach where content is separated into interactive(More)
Modern physics engines process collisions by leveraging vector representations (e.g. <i>Box2D</i> or <i>Open Dynamics Engine (ODE)</i>), which means that artists who work with pixel-based 2D content must map their pixel drawings onto representations such as Delaunay triangulations [Shewchuk 1996]. Effects such as destruction then require remeshing, which(More)
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