This paper presents a new interactive platform for visual analytics of large networks and graphs. The platform integrates multiple graph layouts, interactive navigations and clustering algorithms into an effective and flexible analytical visual environment for better understanding of the nature of variety of different networks. This could lead to the discovery and revealing of hidden structures...

The problem of determining whether a receiver may safely accept attributes (e.g., identity, credentials, location) of unknown senders in various online social protocols is a special instance of a more general problem of establishing trust in interactive protocols. We introduce the notion of interactive trust protocols to illustrate the usefulness of social collateral in reducing the inherent tr...

This paper presents a fast technique for map generation of document collections that, besides being able to group (and separate) documents by their contents, runs at very manageable computational costs, generating maps of pre-processed text in a matter of seconds. Based on multi-dimensional projection techniques and an algorithm for projection improvement, it results in a surface map that allow...

Sixty undergraduate students were paired up and participated in a usability study of the Library Explorer software on a Microsoft PixelSense Tabletop. Specific investigation into the impact of diversity attributes on collaboration style, collaboration quality, task performance, and participants’ perception revealed interesting patterns. Problem solving ideas were coded as suggestions. Gender co...

Graph drawing is increasingly considering the embedding and drawing of multivariate or highly attributed graphs. The direct application of classical layout methods is difficult due to limited space and encoding options as the number of attributes (dimensions) related to nodes of information increases. Data from domains including bioinformatics (metabolic networks, protein-protein interaction) a...

The definition of usability has evolved over time. Some of the proposed definitions have been general, and apply to all types of interactive systems. Others were tremendously influenced by the experience of those who proposed the definitions and the domain in which they practiced usability. The definitions, in general, seem to agree that the targeted users, the complexity of the task, the type ...