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Qualitative modelling of spatial relationships has often been considered as a contextindependent task that aims at a reasoning model in generic form. Despite the primary interest in these models, there is still a sufficiently large scope for context-dependent reasoning in space and time. This paper proposes a qualitative spatial reasoning model, oriented to the modelling and simulation of several cars acting in a multi-lane circuit, which can be considered as an illustrative example of a constrained frame of reference. The modelling objects of interest are individual cars whose cardinal relationships to external cars and actions are modelled. This dynamic system is analysed, and a set of interrelationships is identified at different levels of abstraction, together with inference rules that model the displacement of several cars in a circuit. The potential of this model is illustrated and calibrated using an agent-based prototype. 相似文献
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This paper describes the design and development of an experimental GIS prototype that may be used to assist experienced pilots, student pilots and flight instructors for post-flight evaluation of navigation performance. The system is developed as a GIS experimental application which employs geographical data derived from the Digital Chart of the World integrated with airspace data derived from the ICAO 1:500,000 Aeronautical Chart. Real-time data are collected and integrated within a monitoring computing environment from external sensors which include GPS, altitude and relative motion sensors. This enables the generation of multi-layered digital maps and navigation data capable of being rapidly re-configured to enhance visualization by abstraction. The integration of real time navigation data with geographical data facilitates airborne decision-making, cockpit management, and makes a valuable contribution to flight safety. 相似文献
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Roderic?Beraclaramunt@ecole-navale.fr" title="bera claramunt@ecole-navale.fr" itemprop="email" data-track="click" data-track-action="Email author" data-track-label="">Email author Christophe?Claramunt 《Journal of Geographical Systems》2003,5(4):353-379
This paper introduces several topology-based measures that characterise proximity relationships between regions in a spatial system. These measures are derived from a relative adjacency operator that is computed from the dual graph of a spatial system. The operator is flexible as the respective importance of neighbouring and outlying regions can be parameterised. Given a reference region in a spatial system, we also show how the relative adjacency supports the analysis of the relative distribution of other regions, and how these regions are clustered with respect to that reference region. Extensions of the relative adjacency integrate additional spatial and thematic criteria. The properties of the relative adjacency are illustrated by means of reference examples and a case study.The authors thank the referees for their constructive comments and suggestions that significantly improved the quality of the paper. 相似文献
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Willington Siabato Christophe Claramunt Miguel Ángel Manso‐Callejo Miguel Ángel Bernabé‐Poveda 《Transactions in GIS》2014,18(6):799-816
This article introduces an online bibliography on temporal GIS, a research area in which different scientific fields and researchers have provided substantial results and literature over the past few years. We first define the scientific domain of temporal GIS, its origin and recent evolution, and the context of this bibliography. Then, the components and functionalities of the web‐based application that support the online bibliography are described. The bibliography, entitled TimeBliography, is accessible on the Web at http://spaceandtime.wsiabato.info . 相似文献
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A Spatial Entropy-Based Decision Tree for Classification of Geographical Information 总被引：1，自引：0，他引：1
A decision tree is a classification algorithm that automatically derives a hierarchy of partition rules with respect to a target attribute of a large dataset. However, spatial autocorrelation makes conventional decision trees underperform for geographical datasets as the spatial distribution is not taken into account. The research presented in this paper introduces the concept of a spatial decision tree based on a spatial diversity coefficient that measures the spatial entropy of a geo‐referenced dataset. The principle of this solution is to take into account the spatial autocorrelation phenomena in the classification process, within a notion of spatial entropy that extends the conventional notion of entropy. Such a spatial entropy‐based decision tree integrates the spatial autocorrelation component and generates a classification process adapted to geographical data. A case study oriented to the classification of an agriculture dataset in China illustrates the potential of the proposed approach. 相似文献
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Books reviewed:
Statistical Methods for Spatial Data Analysis by OLIVER SCHABENBERGER AND CAROL A GOTWAY. Chapman & Hall, Norwell, MA, 2005, 488 pp. ISBN 1-58488-322-7, $89.95.
Fuzzy Modeling with Spatial Information for Geographic Problems , edited by FEDERICK E PETRY, VINCENT B ROBINSON, AND MARIA A COBB. Springer, New York, 2005, 338 pp. ISBN 3-54023713-5, $92.00 (hardcover).
Statistical Analysis of Geographic Information with ArcView GIS® and ArcGIS® (Second Edition) by DAVID W S WONG AND JAY LEE. John Wiley and Sons, New York, 2005. 429 pp. ISBN 0-471-34874-0, $95.00 (cloth). 相似文献
Statistical Methods for Spatial Data Analysis by OLIVER SCHABENBERGER AND CAROL A GOTWAY. Chapman & Hall, Norwell, MA, 2005, 488 pp. ISBN 1-58488-322-7, $89.95.
Fuzzy Modeling with Spatial Information for Geographic Problems , edited by FEDERICK E PETRY, VINCENT B ROBINSON, AND MARIA A COBB. Springer, New York, 2005, 338 pp. ISBN 3-54023713-5, $92.00 (hardcover).
Statistical Analysis of Geographic Information with ArcView GIS® and ArcGIS® (Second Edition) by DAVID W S WONG AND JAY LEE. John Wiley and Sons, New York, 2005. 429 pp. ISBN 0-471-34874-0, $95.00 (cloth). 相似文献
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A better understanding of the relationship between the structure and functions of urban and suburban spaces is one of the avenues of research still open for geographical information science. The research presented in this paper develops several graph-based metrics whose objective is to characterize some local and global structural properties that reflect the way the overall building layout can be cross-related to the one of the road layout. Such structural properties are modeled as an aggregation of parcels, buildings, and road networks. We introduce several computational measures (Ratio Minimum Distance, Minimum Ratio Minimum Distance, and Metric Compactness) that respectively evaluate the capability for a given road to be connected with the whole road network. These measures reveal emerging sub-network structures and point out differences between less-connective and more-connective parts of the network. Based on these local and global properties derived from the topological and graph-based representation, and on building density metrics, this paper proposes an analysis of road and building layouts at different levels of granularity. The metrics developed are applied to a case study in which the derived properties reveal coherent as well as incoherent neighborhoods that illustrate the potential of the approach and the way buildings and roads can be relatively connected in a given urban environment. Overall, and by integrating the parcels and buildings layouts, this approach complements other previous and related works that mainly retain the configurational structure of the urban network as well as morphological studies whose focus is generally limited to the analysis of the building layout. 相似文献
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Marie-Hélène Vandersmissen Anne-Marie Séguin Marius Thériault Christophe Claramunt 《Journal of Geographical Systems》2009,11(1):37-65
The research presented in this paper analyzes the emergent residential behaviors of individual actors in a context of profound
social changes in the work sphere. It incorporates a long-term view in the analysis of the relationships between social changes
in the work sphere and these behaviors. The general hypothesis is that social changes produce complex changes in the long-term
dynamics of residential location behavior. More precisely, the objective of this paper is to estimate the propensity for professional
workers to move house after a change of workplace. Our analysis draws on data from a biographical survey using a retrospective
questionnaire that enables a posteriori reconstitution of the familial, professional and residential lifelines of professional
workers since their departure from their parents’ home. The survey was conducted in 1996 in the Quebec City Metropolitan Area,
which, much like other Canadian cities, has experienced a substantial increase in “unstable” work, even for professionals.
The approach is based on event history analysis, a Temporal Geographic Information System and exploratory spatial analysis
of model’s residuals. Results indicate that 48.9% of respondents moved after a job change and that the most important factors
influencing the propensity to move house after a job change are home tenure (for lone adults as for couple) and number of
children (for couples only). We also found that moving is associated with changing neighborhood for owners while tenants or
co-tenants tend to stay in the same neighborhood. The probability of moving 1 year after a job change is 0.10 for lone adults
and couples while after 2 years, the household structure seems to have an impact: the probability increased to 0.23 for lone
adults and to 0.21 for couples. The outcome of this research contributes to furthering our understanding of a familial decision
(to move) following a professional event (change of job), controlling for household structure, familial, professional and
spatial contexts.
相似文献
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