Automated Generation Of Geometrically Precise And Semantically Informed Virtual Geographic Environments Populated With Spatially Reasoning Agents
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Automated Generation Of Geometrically Precise And Semantically Informed Virtual Geographic Environments Populated With Spatially Reasoning Agents
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Author : Mehdi Mekni
language : en
Publisher: Universal-Publishers
Release Date : 2010-10-29
Automated Generation Of Geometrically Precise And Semantically Informed Virtual Geographic Environments Populated With Spatially Reasoning Agents written by Mehdi Mekni and has been published by Universal-Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-10-29 with categories.
Multi-Agent Geo-Simulation (MAGS) is a modelling paradigm which has attracted a growing interest from researchers and practitioners for the study of various phenomena in a variety of domains such as traffic simulation, urban dynamics, environment monitoring, as well as changes of land use and cover, to name a few. These phenomena usually involve a large number of simulated actors (implemented as software agents) evolving in, and interacting with, an explicit spatial environment representation commonly called Virtual Geographic Environment (VGE). Since a geographic environment may be complex and large-scale, the creation of a VGE is difficult and needs large quantities of geometrical data originating from the environment characteristics (terrain elevation, location of objects and agents, etc.) as well as semantic information that qualifies space (building, road, park, etc.). CurrentMAGS approaches usually consider the environment as a monolithic structure, which considerably reduces the capacity to handle largescale, real world geographic environments as well as agent's spatial reasoning capabilities. Moreover, the problem of path planning in MAGS involving complex and large-scale VGEs has to be solved in real time, often under constraints of limited memory and CPU resources. Available path planners provide agents with obstacle-free paths between two located positions in the VGE, but take into account neither the environment's characteristics (topologic and semantic) nor the agents' types and capabilities. In addition, agents evolving in a VGE lack for mechanisms and tools that allow them to acquire knowledge about their virtual environment in order to make informed decisions. In this thesis, we propose a novel approach to automatically generate a semantically-enriched and geometrically-precise representation of the geographic environment that we call Informed Virtual Geographic Environment (IVGE). Our IVGE model efficiently organizes the geographic features, precisely captures the real world complexity, and reliably represents large-scale geographic environments. We also provide a new hierarchical path planning algorithm which leverages the enriched description of the IVGE in order to support agents' reasoning capabilities while optimising computation costs and taking into account both the virtual environment's characteristics and the agents' types and capabilities. Finally, we propos an environment knowledge management approach to support the agents' spatial decision making process while interacting with the IVGE.
Motion In Games
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Author : Jan Allbeck
language : en
Publisher: Springer
Release Date : 2011-11-08
Motion In Games written by Jan Allbeck and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-08 with Computers categories.
This book constitutes the proceedings of the 4th International Workshop on Motion in Games, held in Edinburgh, UK, in November 2011. The 30 revised full papers presented together with 8 revised poster papers in this volume were carefully reviewed and selected from numerous submissions. The papers are organized in topical sections on character animation, motion synthesis, physically-based character motion, behavior animation, animation systems, crowd simulation, as well as path planning and navigation.
Spatial And Temporal Reasoning
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Author : Oliviero Stock
language : en
Publisher: Springer Science & Business Media
Release Date : 1998-09-30
Spatial And Temporal Reasoning written by Oliviero Stock and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-09-30 with Language Arts & Disciplines categories.
Qualitative reasoning about space and time - a reasoning at the human level - promises to become a fundamental aspect of future systems that will accompany us in daily activity. The aim of Spatial and Temporal Reasoning is to give a picture of current research in this area focusing on both representational and computational issues. The picture emphasizes some major lines of development in this multifaceted, constantly growing area. The material in the book also shows some common ground and a novel combination of spatial and temporal aspects of qualitative reasoning. Part I presents the overall scene. The chapter by Laure Vieu is on the state of the art in spatial representation and reasoning, and that by Alfonso Gerevini gives a similar survey on research in temporal reasoning. The specific contributions to these areas are then grouped in the two main parts. In Part II, Roberto Casati and Achille Varzi examine the ontological status of spatial entities; Anthony Cohn, Brandon Bennett, John Gooday, and Nicholas Gotts present a detailed theory of reasoning with qualitative relations about regions; Andrew Frank discusses the spatial needs of geographical information systems; and Annette Herskovits focuses on the linguistic expression of spatial relations. In Part III, James Allen and George Ferguson describe an interval temporal logic for the representation of actions and events; Drew McDermott presents an efficient way of predicting the outcome of plan execution; and Erik Sandewall introduces a semantics based on transitions for assessing theories of action and change. In Part IV, Antony Galton's chapter stands clearly between the two areas of space and time and outlines the main coordinates of an integrated approach.
Informed Virtual Geospatial Environments
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Author : Mehdi Mekni
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2013
Informed Virtual Geospatial Environments written by Mehdi Mekni and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
In order to enable agents to interact with their virtual environment, it is important to provide an explicit representation of the geographic environment in which agents evolve. Such a description should provide agents with quantitative and qualitative information in order to extend their knowledge about their environment and to let them reason about it in order to achieve their goals. This description should include (1) the geometric characteristics; (2) the topological features; and (3) the semantic information which qualifies and characterize the spatial environment. This book presents the state of the art of the generation of explicit representations of geospatial environments. It also outlines the complexity to generate virtual geospatial environments. Finally, it proposes and details a novel approach to automatically generate geometrically-precise and semantically-enriched informed virtual geospatial environments.
Spatial Reasoning And Planning
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Author : Jiming Liu
language : en
Publisher: Springer
Release Date : 2012-10-05
Spatial Reasoning And Planning written by Jiming Liu and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-05 with Computers categories.
Spatial reasoning and planning is a core constituent in robotics, graphics, computer-aided design, and geographic information systems. After a review of previous work in the related areas, Liu and Daneshmend present a unified framework for qualitative spatial representation and reasoning. This paves the way for a generation of solutions to spatial problems where the geometric knowledge is imprecise. Many graphical illustrations and detailed algorithm descriptions help the reader to comprehend the solution paths and to develop their own applications. The book is written as a self-contained text for researchers and graduate students. The methodologies, algorithmic details, and case studies presented can be used as course material as well as a convenient reference.
Virtual Geographic Environments
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Author : Hui Lin
language : en
Publisher:
Release Date : 2009
Virtual Geographic Environments written by Hui Lin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Geographic information systems categories.
International Encyclopedia Of Geography 15 Volume Set
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Author : Noel Castree
language : en
Publisher: John Wiley & Sons
Release Date : 2017-03-20
International Encyclopedia Of Geography 15 Volume Set written by Noel Castree and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-20 with Science categories.
Representing the definitive reference work for this broad and dynamic field, The International Encyclopedia of Geography arises from an unprecedented collaboration between Wiley and the American Association of Geographers (AAG) to review and define the concepts, research, and techniques in geography and interrelated fields. Available as a robust online resource and as a 15-volume full-color print set, the Encyclopedia assembles a truly global group of scholars for a comprehensive, authoritative overview of geography around the world. Contains more than 1,000 entries ranging from 1,000 to 10,000 words offering accessible introductions to basic concepts, sophisticated explanations of complex topics, and information on geographical societies around the world Assembles a truly global group of more than 900 scholars hailing from over 40 countries, for a comprehensive, authoritative overview of geography around the world Provides definitive coverage of the field, encompassing human geography, physical geography, geographic information science and systems, earth studies, and environmental science Brings together interdisciplinary perspectives on geographical topics and techniques of interest across the social sciences, humanities, science, and medicine Features full color throughout the print version and more than 1,000 illustrations and photographs Annual updates to online edition
Virtual Geographic Environments
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Author : Hui Lin
language : en
Publisher: ESRI Press
Release Date : 2012
Virtual Geographic Environments written by Hui Lin and has been published by ESRI Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Geographic information systems categories.
Virtual Geographic Environments, edited by Hui Lin and Michael Batty, collects key papers that define the current momentum in GIS and "virtual geographies." Contributions by leading members of the geospatial community to Virtual Geographic Environments illustrate the cutting edge of GIScience, as well as new applications of GIS with the processing and delivery of geographic information through the Web and handheld devices, forming two major directions to these developments. The four-part organization leads from a primer on VGEs to virtual cities and landscapes, interface design and public participation, and finally mobile and networked VGEs. Current topics, such as crowd sourcing and related services, point to the development of new business models that merge proprietary and nonproprietary systems.
Advanced Geo Simulation Models
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Author : Danielle J. Marceau
language : en
Publisher: Bentham Science Publishers
Release Date : 2011-09-09
Advanced Geo Simulation Models written by Danielle J. Marceau and has been published by Bentham Science Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-09 with Architecture categories.
"Geosimulation has recently emerged at the intersection of Geographic Information Science, Complex Systems Theory and Computer Science. Geosimulation aims at understanding the dynamics of complex human-driven spatial systems through the use of spatially ex"
Crowdsourcing Geographic Knowledge
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Author : Daniel Sui
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-08-10
Crowdsourcing Geographic Knowledge written by Daniel Sui and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-10 with Science categories.
The phenomenon of volunteered geographic information is part of a profound transformation in how geographic data, information, and knowledge are produced and circulated. By situating volunteered geographic information (VGI) in the context of big-data deluge and the data-intensive inquiry, the 20 chapters in this book explore both the theories and applications of crowdsourcing for geographic knowledge production with three sections focusing on 1). VGI, Public Participation, and Citizen Science; 2). Geographic Knowledge Production and Place Inference; and 3). Emerging Applications and New Challenges. This book argues that future progress in VGI research depends in large part on building strong linkages with diverse geographic scholarship. Contributors of this volume situate VGI research in geography’s core concerns with space and place, and offer several ways of addressing persistent challenges of quality assurance in VGI. This book positions VGI as part of a shift toward hybrid epistemologies, and potentially a fourth paradigm of data-intensive inquiry across the sciences. It also considers the implications of VGI and the exaflood for further time-space compression and new forms, degrees of digital inequality, the renewed importance of geography, and the role of crowdsourcing for geographic knowledge production.