The main relief parameters affecting the resulting characterization were the Elevation and the Slope. More specifically, we identify linguistic terms that people use when they locate themselves in space or when they move around it. Architecture-Based Approaches to Geo-Integration 15. Written by experts in the field, Theories of Geographic Concepts: Ontological Approaches to Semantic Integration emphasizes the real issues involved in integrating existing geo-ontologies. Copiously illustrated, the book contains more than 80 illustrations and several examples to various approaches that provide a better understanding of the complexity of ontology integration tasks. The developed method, contrary to previous limitations, proceeded with a single, explicit, quantified, objective and controllable approach.
Author by : Richard M. Therefore, it is reasonable to wonder whether the existence of many diverse upper-level ontologies just shifts the interoperability problems to a higher level. This paper introduces a methodology for: 1 representing the essence of qualitative information to clarify the identity relations among categories; and 2 assessing their semantic similarity in order to disambiguate the taxonomic structure of existent geospatial ontologies. The papers are organized in topical sections on ontologies of space and time, reasoning about distances and directions, spatial reasoning - shapes and diagrams, computational approaches, reasoning about regions, vagueness, visualization, and landmarks and wayfinding. This paper identifies the concepts underlying the representation of spatial relations and outlines the processes involved in relation-based information processing. Raster products are firstly mosaicked to produce a single image per year, covering the study area. Tsihrintzis has also extensive professional experience as a practicing civil and environmental engineer both in the United States he was a registered Professional Engineer in California and a certified Professional Hydrologist by the American Institute of Hydrology and in Greece, having been involved in several projects related to land development, drainage, flood hazard alleviation and control, urban hydrology, sediment transport and channel design, water resources management, wetlands restoration and constructed wetlands.
New to this edition are: further readings based on the latest research; updated data and statistics; an expanded glossary; new key concepts; additional study questions; and a listing of useful websites. Such utilization requires advanced modeling capabilities, especially for irregular solid objects. An attempt is made to draw the overall picture in order to assist users in defining their problem, selecting an appropriate approach and successfully undertaking a geosemantics or ontology-based task. This book aims to be useful for academics and practitioners involved in geographical data. The questions are very difficult to answer, yet this should not prevent us from always pursuing the very nature of geographic meaning. A Geo-Concept Comparison Approach 15.
Despite the common realization of product usage by non-experts, the remote-sensing community has not fully addressed the challenge. There is an effort to introduce notions, which traditionally belong to static spatial schemes, to a model able to deal with temporal aspects. In the second step, we apply a deterministic algorithm in order to parse the tagged definition and create the corresponding conceptual graph. Geographic concept definitions are a rich source of knowledge with special structure and content. The authors articulate the role of physical and human geography in terrorist ideology, operations, haven formation, and control.
The global test is used as a diagnostic tool and its significance level is related to the test on a single outlier by means of the first-order Bonferroni bounds. The authors highlight the importance of philosophical, cognitive, and formal theories in preserving the semantics of geographic concepts during ontology development and integration. Issues of data organization in an information system are also addressed. Scenario 2: Concept Comparison 16. The analysis of the philosophical notion of identity provides a theoretical tool of dealing with the implications imposed by vagueness. Heterogeneity reconciliation is implemented by semantic factoring, a conceptual analysis process which results in a set of non-redundant, non-overlapping categories. These open questions have concerned many people around the world, but professional associations and universities have not provided sufficient answers yet.
The ability to efficiently store, analyze, and update complex geo-information, together with the ability to plan resource explorations, has been the subject of two years of research here at the University of New Brunswick. Marinos Kavouras, P Eng, obtained a Dipl. Semantic Information Extraction from Text 12. The difficulty of geospatial data exchange between different sources lies, not so much in the incompatibility of data formats, but in the heterogeneity of data models, conceptual schemata and semantics. As a solution, we suggest the alignment of the tags to well structured top level ontologies.
Finally, commercial tools as well as models resulted from theoretical research are combined and tested for their applicability. It is a basic spatial property upon which numerous other phenomena occur. The proposed design is based on an extended Entity-Relationship model. What is needed, is a way to structure the tags while satisfying the freedom criterion. According to Sowa 2000 , ontology sharing across different applications can be accomplished if these ontologies are embedded within a more general, philosophical framework. The authors examine networks as global systems and discuss new geospatial technologies in counterterrorism, supplying a blend of concepts and techniques that support policy development within the governing counter terrorist community.
This second product proves to be very useful in detecting similarities and dissimilarities among the different areas in question. Introduction Dealing with geographic applications has been a challenge for different and, sometimes, diverse research communities for many years. After analysis of morphological characteristics of the entire country, it was decided to use an appropriate Digital Elevation Model. Therefore, the four basic operators of conceptual map generalisation are utilised, thus defining four new temporal information abstraction operators: temporal selection, temporal class generalisation, change aggregation and temporal topology association. The authors provide guidance on selecting the most appropriate approach and details on its application to indicative integration problems.
The notion of an object bearing information is central to the traditional situation semantics framework. Through contributions from international researchers and educators, this publication demonstrates how the study of geography can assist people in different social and cultural groups to sustain their lifeworlds, and, wherever possible, improve them for future generations of citizens. Several investigations have been conducted to bring actions tasks to bear on - tologies. The book is divided into six main parts. Knowledge representation instruments -- chapt.