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Visual graph analytics definitely relies on the use of node and edge metrics to identify salient properties in graphs. Most often, these metrics are turned into useful visual cues, or are used to interactively filter out parts of a graph while querying it, for instance. Along the years, analysts coming from different application domains have designed metrics to serve specific needs. Graph analytics,...
Complex graphs, ones containing thousands of nodes of high degree, are difficult to visualize. Displaying all of the nodes and edges of these graphs can create an incomprehensible cluttered output. This paper presents a simplification algorithm that may be applied to a complex graph in order to produce a controlled thinning of the graph. Using importance metrics, the simplification process removes...
From tactile paintings in sand to acrylic on board, Australian Aboriginal performative art can be thought of as also cultural heritage survival maps. This paper synthesises the two key authors' work [1; 2] that address this concept. In so doing, it sheds new light on understandings of the indexicality of the Australian Aboriginal cultural heritage survival map to form a theory of the cultural specificity...
This article discusses an early stage of research on the potential of crowd simulation tools for (marketing) communication purposes in architecture and urban planning. We argue that today, in architecture and urban planning, agent-based simulation tools have been primarily used for analytical purposes, such as the simulation of pedestrians or fire escape scenarios in buildings, and only rarely for...
The relationships between documents are usually derived by accounting on the links between them. These linkages may take the form of citation, cocitation, hyperlink, or co-terms. The relatedness between documents is derived from link analysis, which is widely used in the information science disciplines. We use kernel functions to overcome the limitations of the relatedness measurement based on cocitation...
The analysis of the historical evolution of the territories and landscapes has been seldom based upon the study of old cartographic documents; they have been always set in a second place after texts and writings. Trying to bridge this gap, we have designed and implemented a relational database of the ancient maps and charts that are already preserved in the main Spanish collections, archives and libraries,...
This paper demonstrates the synergy of common InfoVis and GeoVis interaction techniques and the logistic application domain demonstrated in the customized visualize performance data (VISPER) application. In VISPER multi-dimensional, multi-source, time-varying and geospatial digital information from voyage analysis is represented to facilitate decision-making. Using common InfoVis components for multivariate...
Focus + context visualization facilitates the exploration of complex information spaces. This paper proposes 3D generalization lenses, a new visualization technique for virtual 3D city models that combines different levels of structural abstraction. In an automatic preprocessing step, we derive a generalized representation of a given city model. At runtime, this representation is combined with a full-detail...
Complexity science affords a number of novel tools for examining terrorism, particularly network analysis and NK-Boolean fitness landscapes. The following paper explores various aspects of terrorist networks which can be illuminated through applications of non-linear dynamical systems modeling to terrorist network structures. Of particular interest are some of the emergent properties of terrorist...
Assessing the potential property and social impacts of an event, such as tornado or wildfire, continues to be a challenging research area. From financial markets to disaster management to epidemiology, the importance of understanding the impacts that events create cannot be understated. Our work describes an approach to fuse information from multiple sources, then to analyze the information cycles...
Color coding is a widely used visualization method for scalar data. To generate expressive and effective visual representations, it is extremely important to carefully design the mapping from data to color. In this paper, we describe a color coding approach that accounts for the different tasks users might pursue when analyzing data. Our task description is based on the task model of Andrienko &...
Geovisual analytics focuses on finding location-related patterns and relationship. Many approaches exist but generally do not scale well with large spatial datasets. We propose three enhancements that facilitate scalable geovisual analytics of voluminous geospatial data based on geographic mapping coordinated and linked with parallel coordinates (PC): 1) texture-based geographic mapping that exploits...
Web mining is an intensive task which may yield significant insights that may revolutionise business and marketing by using effective information distribution, entertainment and communication techniques. For instance, corporations can optimise their eCommerce Websites to maximize impact and personalise the online content of their Websites. Corporations can use Web mining techniques for better understanding...
In this paper we suggest the ceiling as a new physical surface for information visualization. To provide a design framework for application designers, we present the notion of 'information sky'. This concept is based on (1) the metaphor of the natural sky, (2) historical examples of ceiling art and (3) recent computing paradigms, including mediatecture, ubiquitous computing and ambient display. We...
Advances in the field of microarray technology have attracted a lot of attention in recent years. More and more biological experiments are conducted based on microarrays. The challenge researchers face today is to analyze and understand the collected data. We present a visual approach to support understanding microarray data. In contrast to other visualization techniques, which represent expression...
The use of information visualization tools that support multiple coordinated views for data exploration and analysis has become more frequent. However, few usability studies have focused this group of tools. The goal of this paper is to perform usability experiments with tools supporting multiple coordinated views on the same screen, in separate screens and tools that support each technique individually...
The recent revolution of digital camera technology has resulted in much larger collections of images. Image browsing techniques thus become increasingly important for overview and retrieval of images in sizable collections. This paper proposes CAT (clustered album thumbnail), a technique for browsing large image collections, and its interface for controlling the level of details (LOD). As a preprocessing,...
The revolution in information technology is making open sources more accessible, ubiquitous, and valuable. The international Intelligence Communities have seen open sources grow increasingly easier and cheaper to acquire in recent years. But up to 80% of electronic data is textual and most valuable information is often hidden and encoded in pages which are neither structured, nor classified. The process...
Hand-held devices have become widespread and provided with significant computing capabilities, which results in an increasing pressure for using these devices to perform tasks formerly limited to notebooks, like web browsing. Due to their small screens, however, hand-held devices cannot visualize directly documents that were not designed explicitly for small-screen rendering. Such documents may be...
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