André Skupin

André Skupin
San Diego State University | SDSU · Department of Geography

PhD

About

59
Publications
15,671
Reads
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1,688
Citations
Citations since 2016
5 Research Items
661 Citations
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2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
Introduction
Current Research: - Vis. of high-dim. data in medical and financial domains - Knowledge vis. for science and technology (S&T) studies - Self-organizing map software and workflow development - Travels in attribute space aka 'Computing Déjà Vu' - Dynamics in crime, climate, and land cover - Human mobility in physical and abstract spaces - Foundational work on GIS&T Body of Knowledge
Additional affiliations
October 2017 - present
Center for Data Analytics and Intelligence (CENDAI)
Position
  • Managing Director
January 2015 - present
University of Dubai
Position
  • Managing Director
May 2014 - present
Center for Information Convergence and Strategy (CICS)
Position
  • Founder & Co-Director

Publications

Publications (59)
Article
Full-text available
We implement a high-resolution visualization of the medical knowledge domain using the self-organizing map (SOM) method, based on a corpus of over two million publications. While self-organizing maps have been used for document visualization for some time, (1) little is known about how to deal with truly large document collections in conjunction wi...
Article
Geographic features have traditionally been visualized with fairly high amount of geometric detail, while relationships among these features in attribute space have been represented at a much coarser resolution. This limits our ability to understand complex high-dimensional relationships and structures existing in attribute space. In this paper, we...
Chapter
Full-text available
This paper proposes to conceptualize a geographic trajectory as an attribute-time path (ATP) traversing an n-dimensional attribute space. Geographic entities occupying a certain study area are conceptualized as discrete loci in that same n-dimensional space. Those entities undergo spatialization and the resulting point locations become vertices as...
Article
Dr. David Mark is widely regarded as a path-breaking researcher in geographic information science. What are the structural and temporal characteristics of his intellectual contributions, as seen through the eyes of the broader academic community? Aiming to answer that question, this article presents a scientometric analysis of publications that hav...
Article
Recent decades have seen a significant increase in the frequency, intensity, and impact of natural disasters and other emergencies, forcing the governments around the world to make emergency response and disaster management national priorities. The growth of extremely large and complex datasets — commonly referred to as big data — and various advan...
Article
Full-text available
Highlights: Regional regression models of percentile flows created using 918 basins in the US. Compare impact of different sets of independent variables on performance. Variables describing the distribution of basin data did not improve models. A set of three variables selected via expert assessment was effective. Tool to predict percentile flows b...
Article
The established research domain of information retrieval and the interdisciplinary domain of knowledge mapping have mainly been independent from each other. Both strands are driven by quite different epistemic perspectives. The use of information visualization in the area of information retrieval is predominantly focused on the support of informati...
Article
Full-text available
Study region: 918 basins in the contiguous United States. Study focus: Regional regression models were developed to predict 13 percentile flows for groups of basins clustered based on physical and climatic characteristics. The research question investigated how the number and information content of independent variables affected model performance,...
Chapter
Full-text available
This paper describes a body of knowledge technological implementation for domain knowledge management. The system enables collaboration, exploration, and exploitation of domain knowledge through a front-end visual wiki, an ontology-driven knowledge base and Web services. The service-based architecture enables applications that allow knowledge artif...
Article
Full-text available
The self-organizing map (SOM) method has become popular in various disciplines for visual exploration of large, complex, multivariate databases. Despite the increasing popularity of this powerful, but computationally intensive, neural network approach, web applications involving SOM construction and visualization are still rare. We introduce SOMViz...
Conference Paper
Full-text available
Spatial information systems have traditionally been focused on the modelling of outdoor spaces, though spatial phenomena are actually encountered in both outdoor and indoor contexts. In fact, indoor environments play a particularly central role in human activities, and the average person spends approximately 90% of his/her time inside buildings (Je...
Article
Full-text available
This article seeks to address the gap between the quantitative, summative data that are typically engaged in geovisual analytics and the more personal, experiential ways of knowledge construction accentuated by qualitative GIS. By incorporating diverse forms of data within a high-dimensional conceptual framework, we set out a type of qualitative ge...
Article
A series of maps were produced that together form a type of atlas of the Nokia Mobile Data Challenge (MDC). Like in a traditional geographic atlas, a limited number of base map configurations is generated, onto which various thematic elements are then overlaid. Two of those base maps are themselves derived from MDC data; the third is referenced in...
Article
Full-text available
Free download: http://www.tandfonline.com/eprint/GzW5AAxzAmfUeIpnrAAn/full A computational framework is presented for re-engineering the Geographic Information Science and Technology Body of Knowledge (GIS&T BoK). At its core is an ontology that is meant to simplify and extend the original BoK hierarchical structure to better capture relationships...
Article
The UCGIS GIS&T Body of Knowledge document provided an opportunity for the GIS educational community to link course content and curricular sequencing to a catalog of subject matter. Focusing on learning objectives, a selection of relevant citations, and basic background for each topic, it has been used to a limited degree for both course topic sele...
Article
Understanding the controls of seasonal vegetation phenology is important for determining environmental baselines that sustain ecosystem functioning. Vegetation phenology in water-limited ecosystems is particularly sensitive to environmental changes since water acts as the most limiting resource. The self-organizing map (SOM) is a data visualization...
Article
Full-text available
The authors explore the effect of different topologies on properties of self-organizing maps (SOM). They suggest several diagnostics for measuring topology-induced errors in SOM and use these in a comparison of four different topologies. The results show that SOM is less sensitive to localized irregularities in the network structure than the litera...
Data
Supplementary methods, figures, and tables. (DOC)
Article
Full-text available
Background: We investigate the accuracy of different similarity approaches for clustering over two million biomedical documents. Clustering large sets of text documents is important for a variety of information needs and applications such as collection management and navigation, summary and analysis. The few comparisons of clustering results from...
Article
Full-text available
Article
Space-time data analysis and assimilation techniques in atmospheric sciences typically consider input from monitoring measurements. The input is often processed in a manner that acknowledges characteristics of the measurements (e.g., underlying patterns, fluctuation features) under conditions of uncertainty; it also leads to the derivation of secon...
Article
Full-text available
Attribute spaces can be thought of as the set of characteristics associated with any class of object, for instance the characteristics of places, people, or representations. In this paper, we report on a study aimed at exploring the interaction of some of these attribute spaces. University students were shown videos of San Diego neighborhoods and a...
Article
Full-text available
In what some have called the visual turn, visual imagery has become an increasingly pervasive element of contemporary society. As traditional boundaries between media are being dissolved and the respective roles of creators/users are changing, written language is not simply being replaced, but instead is appearing in new places and fulfilling new r...
Article
Visual depiction of the structure and evolution of science has been proposed as a key strategy for dealing with the large, complex, and increasingly interdisciplinary records of scientific communication. While every such visualization assumes the existence of spatial structures within the system of science, new methods and tools are rarely linked t...
Article
This chapter introduces the use of high-resolution self-organizing maps (SOM) to represent a large number of geographic features on the basis of their attributes. Until now, the SOM method has been applied to geographic data for both clustering and visualization purposes. However, the granularity of the resulting attribute space representations has...
Book
Self-Organising Maps: Applications in GI Science brings together the latest geographical research where extensive use has been made of the SOM algorithm, and provides readers with a snapshot of these tools that can then be adapted and used in new research projects. The book begins with an overview of the SOM technique and the most commonly used (an...
Chapter
Depicting information collections in map‐like displays, even if the collections are not themselves explicitly spatial, is an information visualization technique known as spatialization. Spatialization exploits the power of metaphors in graphic displays as cognitive aids, facilitating information seekers to sift more efficiently through, and gain kn...
Article
Interactivity is generally regarded as a fundamental component of modern spatio-temporal visualization solutions. However, too little is known about the exact value provided by interactive tools in general and by specific forms of interactivity. This paper describes a human subject experiment during which three different visualizations of urban lan...
Article
Full-text available
In recent years, the proliferation of multi-temporal census data products and the increased capabilities of geospatial analysis and visualization techniques have encouraged longitudinal analyses of socioeconomic census data. Traditional cartographic methods for illustrating socioeconomic change tend to rely either on comparison of multiple temporal...
Chapter
Information Visualization is concerned with the art and technology of designing and implementing highly interactive, computer supported tools for knowledge discovery in large non-spatial databases. Information Visualization displays, also known as information spaces or graphic spatializations, differ from ordinary data visualization and geovisualiz...
Article
Full-text available
In this paper, we present an experiment aimed at visualizing the contents of the ICA conference proceedings. Its main goal is to provide visual means for exploring the topical structure of the cartographic discipline. The source data for our analysis are the proceedings of the 2001 and 2003 ICA meetings, as published on the conference CDs. The firs...
Article
Full-text available
Anyone engaged in scientific work knows how difficult it is to keep up with the latest scientific advances. The overwhelming volume of literature-related to the growing number of peer-reviewed print outlets and Internet-based sources - combined with cutting-edge science's increasingly interdisciplinary character means that scientists, educators, st...
Article
From an informed critique of existing methods to the development of original tools, cartographic engagement can provide a unique perspective on knowledge domain visualization. Along with a discussion of some principles underlying a cartographically informed visualization methodology, results of experiments involving several thousand conference abst...
Article
Full-text available
this paper attempts, with a view of the self-organizing map method. It engages the distortions caused by this popular artificial neural network approach in two ways. First, the paper presents a cartographically informed method to visualize these distortions. Second, it examines whether distortion characteristics could be exploited towards a novel t...
Article
This research priority deals with the need to develop a theoretical framework, supported by empirical evidence and large-scale implementation, for the construction of cognitively adequate and computationally efficient spatializations for knowledge discovery in large, distributed repositories of non-georeferenced data. We define spatialization as th...
Article
Full-text available
Information visualization is an interdisciplinary research area in which cartographic efforts have mostly addressed the handling of geographic information. Some cartographers have recently become involved in attempts to extend geographic principles and cartographic techniques to the visualization of non-geographic information. This paper reports on...
Conference Paper
Full-text available
This paper introduces an approach for closer integration of self-organizing maps into the visualization of spatio-temporal phenomena in GIS. It is proposed to provide a more explicit representation of changes occurring inside socio-economic units by representing their attribute space trajectories as line features traversing a two-dimensional displa...
Chapter
Full-text available
A number of visualization techniques have been put forward that implement a map metaphor to display abstract, non-georeferenced information. This paper refers to these as map-like information visualizations that are distinguished from other information visualization approaches in a number of ways. It interprets some of the principles underlying the...
Article
A cartographic approach to mapping nongeographic information helps to manage graphic complexity in visualizations. It aids domain comprehension by forcing us to use the same cognitive skills we use when viewing geographic maps. The author presents a distinctly cartographic approach to mapping nongeographic information. Focusing on the text content...
Conference Paper
Full-text available
Two hundred and sixty-three subjects each gave examples for one of five geographic categories: geographic features, geographic objects, geographic concepts, something geographic, and something that could be portrayed on a map. The frequencies of various responses were significantly different, indicating that the basic ontological terms feature, obj...
Article
Full-text available
A number of user interface techniques have been put forward that implement a map metaphor to visualize abstract information. In this paper, some of the principles underlying these approaches are interpreted within a framework informed by geographic information science (GIScience). Recent advances in this research area have linked ideas about the na...
Conference Paper
Full-text available
By virtue of their spatio-cognitive abilities, humans are able to navigate through geographic space as well as meaningfully communicate geographic information represented in cartographic form. The current dominance of spatial metaphors in information visualization research is the result of the realization that those cognitive skills also have value...
Conference Paper
Full-text available
By virtue of their spatio-cognitive abilities, humans are able to navigate through geographic space as well as meaningfully communicate geographic information represented in cartographic form. The current dominance of spatial metaphors in information visualization research is the result of the realization that those cognitive skills also have value...
Chapter
Full-text available
Hypermedia has the potential to open new horizons for the representation and communication of knowledge. Much of this is due to its nonsequential character and its capacity to employ a variety of media. This potential is bought for a price appearing in form of obstacles to the effective use of actual hypermedia applications. Nonsequential organizat...

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Projects (3)
Project
The annual Left of Boom conference series is driven by the realization that our increasingly complex world requires new approaches to preventing and mitigating multifaceted threats, in any domain, and not in isolation, but with explicit linkages and knowledge transfer across domains. A key problem is that many domains are data-rich but ineffective in discerning crucial non-obvious patterns from these data. We are also failing to draw on the immense tacit knowledge of domain actors. To make matters worse, in an age of globalization and interconnected networks, impactful decision-making requires simultaneous consideration of data and expertise from multiple disciplines and societal domains. Neither government, business, or academia alone can be relied upon for solutions, nor can individual disciplines be effective on their own. Instead, open dialogue, integrative thinking, and intelligent analysis are required, vendor-agnostic and apolitical.
Archived project