A5027431921- Geographic Information Systems Studies
- Semantic Web and Ontologies
- Data Management and Algorithms
- Advanced Computational Techniques and Applications
- Geological Modeling and Analysis
- Land Use and Ecosystem Services
- Historical Geography and Cartography
- Rangeland and Wildlife Management
- Environmental Monitoring and Data Management
- Data Quality and Management
- Archaeology and Natural History
- Economic and Environmental Valuation
- Natural Language Processing Techniques
- Biomedical Text Mining and Ontologies
- Advanced Database Systems and Queries
- Philippine History and Culture
- Web Data Mining and Analysis
- Geography Education and Pedagogy
- Constraint Satisfaction and Optimization
- Digital Humanities and Scholarship
- American Environmental and Regional History
- Privacy-Preserving Technologies in Data
- Spatial Cognition and Navigation
- Impact of Light on Environment and Health
- Historical Studies of British Isles
United States Geological Survey
2012-2023
GDA (United States)
2020
Pacific Island Ecosystems Research Center
2009-2012
University of Wisconsin–Madison
1991
Global challenges such as food supply chain disruptions, public health crises, and natural hazard responses require access to integration of diverse datasets, many which are geospatial. Over the past few years, a growing number (geo)portals have been developed address this need. However, most existing stacked by separated or sparsely connected data "silos" impeding effective consolidation. A new way sharing reusing geospatial is therefore urgently needed. In work, we introduce...
The development of linked data on the World-Wide Web provides opportunity for U.S. Geological Survey (USGS) to supply its extensive volumes geospatial data, information, and knowledge in a machine interpretable form reach users app
This paper examines the concept and implementation of a map as knowledge base. A base means that visual is not only descriptive compilation data design principles, but also involves semantic propositions logical predicates create body organized map. The digital product can be interpreted by machines, well humans, provide access to through interfaces select features other information from maps technical approaches system architecture support clarifies how differs earlier theory models...
Complex feature types are defined as integrated relations between basic features for a shared meaning or concept. The semantic concept is difficult to define in commonly used geographic information systems (GIS) and remote sensing technologies. role of spatial complex parts was recognized early GIS literature, but had limited representation the coverage data models GIS. Spatial more explicitly specified technology. In this paper, semantics topographic ontology design patterns (ODP) developed...
Abstract Geospatial artificial intelligence (GeoAI) can be defined broadly as the application of methods and techniques to geospatial data, processes, models, applications. The these topographic data phenomena is a focus research in US Geological Survey (USGS). Specifically, USGS has researched developed applications terrain feature extraction, hydrographic network semantic modeling. This article documentation recent work current state development. helps define accomplishments directions...
Whither the topographic map? Topographic mapping historically has been approached as a map factory operation through period 1879–1990. During this time, data were field and photogrammetrically collected; cartographically verified annotated creating compilation manuscript; further edited, generalized, symbolized, produced graphic output product using lithography, or more recently, digital means. Adoption of geographic information systems (GIS) primary production process for maps, including...
Use cases, information modeling, and linked data techniques are Semantic Web technologies used to develop a prototype system that integrates scientific observations from four independent USGS cooperator systems. The were tested with use case goal of creating set for in exploring potential relationships among freshwater fish populations environmental factors. resulting extracts the BioData Retrieval System, Multistate Aquatic Resource Information National Geochemical Survey, Hydrography...
The Semantic Web uses a data model called triple, which consists of subject -predicate - object structure. When represented as triples, geospatial require spatial relation term to serve the predicate linking two features. This document summarizes approaches and procedures used during identification relationships common between topographic features using terms from standards. project identified verb-predicate arguments that could be in creation triples ontologies for National Map U.S....
To expand data functionality and capabilities for users of The National Map the U.S. Geological Survey, sets six watersheds three urban areas were converted from Best Practices vector model formats to Semantic Web formats. This report describes documents conver-sion process. begins with an introduction basic standards background Map. Data a proprietary format Geog-raphy Markup Language capture geometric footprint topographic features. Configuration files designed eliminate redundancy make...
Map art has been mentioned only briefly in geographic or cartographic literature, and analyzed almost entirely at the interpretive level. This paper attempts to define evaluate value of contemporary map-like by placing body work as a whole theoretical concepts proposed J.M. Blaut his colleagues about mapping cognitive cultural universal. discusses how map resembles characteristics similar those observed empirically very young children described publications others. The theory proposes that...
The workshop is a tutorial on introductory geospatial semantics with hands-on exercises using standard Web browsers. divided into two sections, general the and specific examples of data from National Map U.S. Geological Survey Open Ontology Repository. section includes information access to publicly available semantic archives. session semantically enhanced for hydrography, transportation, boundaries, names. Repository offers open-source ontologies public use.
"Ontological Issues for National Topographic Mapping." Cartographica: The International Journal Geographic Information and Geovisualization, 45(2), pp. 103–104
The objective of this paper is to examine the contrast between local, field-surveyed topographical representation and feature in digital, centralized databases clarify their ontological implications. semantics these two approaches are contrasted by examining categorization features subject domains inherent national topographic mapping. When comparing five USGS mapping domain lists, results indicate that multiple semantic meanings ontology rules were applied initial digital database, but lost...