Head/Tail Breaks: A New Classification Scheme for Data with a Heavy-Tailed Distribution
- B. Jiang
- Environmental Science
- 13 September 2012
This article introduces a new classification scheme—head/tail breaks—to find groupings or hierarchy for data with a heavy-tailed distribution. The heavy-tailed distributions are heavily right skewed,…
Topological Analysis of Urban Street Networks
It is shown that large urban street networks form small-world networks but exhibit no scale-free property.
Cognitive and Usability Issues in Geovisualization
It is argued that cognitive and usability issues should be considered in the context of six major research themes: 1) geospatial virtual environments (GeoVEs); 2) dynamic representations (including animated and interactive maps); 3) metaphors and schemata in user interface design; 4) individual and group differences; 5) collaborative geovisualization; and 6) evaluating the effectiveness of geov isualization methods.
Street hierarchies: a minority of streets account for a majority of traffic flow
- B. Jiang
- Computer ScienceInternational Journal of Geographical Information…
- 9 February 2008
This study provides new evidence as to how a city is (self‐)organized, contributing to the understanding of cities and their evolution using increasingly available mobility geographic information.
Geospatial Big Data Handling Theory and Methods: A Review and Research Challenges
A Structural Approach to the Model Generalization of an Urban Street Network*
This paper proposes a novel generalization model for selecting characteristic streets in an urban street network using graph principles where vertices represent named streets and links represent street intersections and centrality measures are introduced to qualify the status of each individual vertex within the graph.
Crowdsourcing, Citizen Science or Volunteered Geographic Information? The Current State of Crowdsourced Geographic Information
A snapshot of the role of citizens in crowdsourcing geographic information is provided and a guide to the current status of this rapidly emerging and evolving subject is provided.
Ht-Index for Quantifying the Fractal or Scaling Structure of Geographic Features
This article proposes an alternative, ht-index, to quantify the fractal or scaling structure of geographic features, and discusses how hT-index is complementary to fractal dimension and elaborate on a dynamic view behind ht -index that enables better understanding of geographic forms and processes.
Integration of Space Syntax into GIS: New Perspectives for Urban Morphology
This paper presents a data modeling process that is based on a combination of complex system theory and the object‐oriented paradigm and produced an object-oriented spatio‐temporal data model that can meet the needs of scientific research.
Scaling of geographic space from the perspective of city and field blocks and using volunteered geographic information
An analogy between a country and a city (or a city or geographic space in general) and a complex organism like the human body or the human brain is drawn to further elaborate on the power of this block perspective in reflecting the structure or patterns of geographic space.