Geographic Information Metadata for Spatial Data Infrastructures: Resources, Interoperability and Information RetrievalSpringer Science & Business Media, 30.03.2005 - 263 Seiten Metadata play a fundamental role in both DLs and SDIs. Commonly defined as "structured data about data" or "data which describe attributes of a resource" or, more simply, "information about data", it is an essential requirement for locating and evaluating available data. Therefore, this book focuses on the study of different metadata aspects, which contribute to a more efficient use of DLs and SDIs. The three main issues addressed are: the management of nested collections of resources, the interoperability between metadata schemas, and the integration of information retrieval techniques to the discovery services of geographic data catalogs (contributing in this way to avoid metadata content heterogeneity). |
Inhalt
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35 Conclusions and future work | 127 |
The use of disambiguated thesauri to improve information retrieval | 131 |
42 Basic concepts about thesaurus and WordNet | 135 |
422 WordNet | 137 |
43 The Semantic Disambiguation of Thesauri | 138 |
432 Description of the semantic disambiguation method | 144 |
433 Testing the method | 150 |
44 The information retrieval model | 154 |
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332 Semantic mapping | 104 |
333 Additional rules for metadata conversion | 105 |
the use of style sheets | 108 |
34 Putting the method to work | 117 |
341 Transformation between CSDGM and ISO 19115 | 118 |
342 Transformation between ISO 19115 and Dublin Core | 122 |
442 Introduction to the vectorspace retrieval model | 156 |
443 The indexing of metadata records | 157 |
444 The indexing of queries | 159 |
445 Testing the retrieval model The information retrieval process | 160 |
45 Conclusions and future work | 168 |
Integrating the concepts within the components of a Spatial Data Infrastructure | 171 |
52 The catalog services component | 173 |
522 Integrating the interoperability between metadata standards | 175 |
523 Integrating the concept based information retrieval | 178 |
53 A metadata editor | 180 |
532 ImportExport of metadata | 183 |
534 Thesaurus Management | 187 |
54 The Web Portal of a Spatial Data Infrastructure | 194 |
55 Conclusions and future work | 196 |
Conclusions and future work | 199 |
Collections | 209 |
A2 Metadata Inference | 219 |
A 2 2 Update of wholepart hierarchy | 221 |
A23 Example of a wholelnferredValues specification | 223 |
Crosswalks | 227 |
B2 ISO 19115DC stylesheet | 229 |
Applications | 233 |
C2 Revision of thesaurus tools | 238 |
References | 243 |
Index | 261 |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
Additionally aggregation relations application attribute bounding box catalog services chapter collection components computed concepts contains context crosswalks CSDGM database datasets DataType defined digital libraries domain Dublin Core Dublin Core metadata enable facilitate FGDC figure format GEMET geographic data geographic information geographic information systems geographic metadata geographic resources geolibraries geospatial data getValue(a hierarchy identifier implementation indexing information retrieval initial instance interface interoperability keywords knowledge representation language mapping MD_Metadata meta meta-information metadata descriptions metadata editors metadata elements Metadata Knowledge Base metadata records metadata records describing metadata schemas metadata standards nodes obtain ontologies Open Geospatial Consortium organization presented representation restriction semantic Semantic Web sense Server slot spatial data infrastructure stylesheet synset path syntax target standard thesaurus tion tool transformation user query VARCHAR Web Map Server whole-part word WordNet XML-Schema XPath xsl:element xsl:if xsl:template xsl:value-of
Beliebte Passagen
Seite 14 - the Semantic Web is an extension of the current web in which information is given well-defined meaning, better enabling computers and people to work in cooperation”.
Seite 96 - the Semantic Web is an extension of the current web in which information is given well-defined meaning, better enabling computers and people to work in cooperation”.
Seite 25 - A body of formally represented knowledge is based on a conceptualization: the objects, concepts, and other entities that are assumed to exist in some area of interest and the relationships that hold among them (Genesereth and Nilsson, 1987).
Seite 91 - the ability of two or more systems or components to exchange information and to use the information that has been exchanged
Seite 256 - (1994). Executive Order 12906. Coordinating Geographic Data Acquisition and Access: the National Spatial Data Infrastructure (US). The April 13,1994, Edition of the Federal Register,
Seite 6 - National Spatial Data Infrastructure (NSDI) means the technology, policies, standards, and human resources necessary to acquire, process, store, distribute, and improve the utilization of geospatial data”.
Seite 5 - Ontologies provide a shared and common understanding of a domain that can be communicated across people and application systems.
Seite 25 - They provide a shared and common understanding of a domain that can be communicated across people and application systems.
Seite 29 - DAML+OIL provides a rich set of constructs with which to create ontologies and to markup information so that it is machine readable and understandable.
Seite 73 - GML is an XML encoding for the transport and storage of geographic information, including both the spatial and non-spatial properties of geographic features
Verweise auf dieses Buch
Semantic Web: Concepts, Technologies and Applications Karin Breitman,Marco Antonio Casanova,Walt Truszkowski Eingeschränkte Leseprobe - 2007 |