USGS: Science Topics: knowledge organization system development

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Knowledge organization system development

Design and development of information systems that represent and relate concepts needed to identify, specify, organize, categorize, or characterize scientific information effectively. Includes development of controlled vocabularies as well as hierarchical and networked concept schemes such as thesauri and ontologies.

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Introduction to geospatial semantics and technology workshop handbook [More info]: Tutorial on geospatial semantics with hands-on exercises using standard Web browsers, divided into two sections, general semantics on the Web and specific examples of geospatial semantics using data from The Open Ontology Repository.
National hydrography dataset--linear referencing [More info]: Explains how the NHD specifies point locations within streams by using a code to indicate the reach (including the hydrologic unit) and a measure, which indicates how far the point is from the downstream end of the reach.

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