XVIIIth Congress: Commission VI

Kraus, Karl; Waldhäusl, Peter

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Multivolume work

Persistent identifier:: 1667435949

Title:: XVIIIth Congress

Sub title:: Vienna, Austria 1996

Year of publication:: 1996

Place of publication:: Vienna

Publisher of the original:: Austrian Society of Surveying and Geoinformation

Identifier (digital):: 1667435949

Language:: English

Editor:: Kraus, Karl; Waldhäusl, Peter

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Document type:: Multivolume work

Volume

Persistent identifier:: 1677550198

Title:: Commission VI

Scope:: 149, 110, 92 Seiten

Year of publication:: 1996

Place of publication:: Vienna

Publisher of the original:: Austrian Society of Surveying and Geoinformation

Identifier (digital):: 1677550198

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(31,B6)

Language:: English

Additional Notes:: Die Vorlage enthält insgesamt 3 Werke: Commission VI (Seiten 1-149); National reports (Seiten 1-110); Special sessions (Seiten 1-92)

Other Title:: Enthaltendes Werk: National Reports; Enthaltendes Werk: Special sessions

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Kraus, Karl; Waldhäusl, Peter

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Economic, Professional, and Educational Aspects of Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Economic, Professional, and Educational Aspects of Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Economic, Professional, and Educational Aspects of Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Economic, Professional, and Educational Aspects of Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: Special Session

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: TOWARD USABLE SPATIAL INFORMATION. Werner Kuhn, Andrew U. Frank [...]

Document type:: Multivolume work

Structure type:: Chapter

Typically, metadata standards involve categories like ° Dataset Identification ° Dataset Overview . Dataset Quality Parameters . Spatial Reference System . Geographic and Temporal Extent . Data Definition . Classification . Administrative Metadata . Metadata Reference There is very little theory on metadata - and even less practice. Everybody talks about metadata, but who produces and who uses them? A recent case study in Austria applied the proposed CEN metadata standard to eleven digital spatial data sources [Timpf et al. in press]. It found that the standard is comprehensible and applicable. Producing metadata was feasible for practitioners and the results understandable to them. The major issues were, however, whether the metadata themselves are usable and relevant to potential users. Do they provide answers to the questions of a potential user who needs to decide if a dataset should be acquired for a specific task? Current thinking about metadata emphasises completeness instead of usability. It promotes a tendency for data cataloguing, leading to voluminous and difficult to use metadata collections in turn. At the end of the case study, there was a general feeling among the metadata producers that potential data users would still be confused, but on a higher level. There seems to be a complete lack of considerations for the use and the user of metadata. lll. FUTURE DEVELOPMENTS If metadata are not yet the answer to the usability problems that slow down the development of data markets, where should we look for future answers? The general recognition of some facts about data and information products provides some guidelines. Firstly, it has become obvious that nobody wants to buy data as an end in itself. Rather, customers want information, providing answers to specific questions, which are important to them. Secondly, information system research has found that the traditional emphasis on data, neglecting operations, is detrimental to the usability of the data. The 62 separation of data from the operations that they support induces a loss of semantics [Kuhn 1994]. Thirdly, current metadata activities show that data do not become usable through documentation alone. These observations suggest a new approach to the production of usable spatial information: To define and standardise interfaces for spatial information services, rather than interfaces for data exchange. Following the paradigm of object-orientation and targeting modern client-server architectures of GIS, data and operations are recognised as belonging together .and forming packages that provide services to users. These service interfaces act as contracts between the suppliers and consumers of spatial information. Instead of trying to transfer spatial data among monolithic GIS, modular GIS functionality then becomes distributed over a global network. This idea is currently being developed and implemented by the Open GIS Consortium [Buehler and McKee 1996]. It is based on the philosophy of Occam's razor: simplifying as much as possible (but not more). A simpler interface reduces the documentation needed to explain complexity. References Buehler, K. and L. McKee, ed. OpenGIS Guide: An Introduction to Interoperable Geoprocessing, Part 1 of the Open Geodata Interoperability Specification (OGIS). The Open GIS Consortium, Inc. (OGC), 35 Main Street, Suite 5, Wayland, MA 01778. Available from http://ogis.org/, 1996. CEN. Geographic Information - Data description: Metadata. CEN TC287, 1995. Draft Standard. Kuhn, W. “Defining Semantics for Spatial Data Transfers.” Proceedings 6th International Symposium on Spatial Data Handling, 1994. Timpf, S., M. Raubal, and W. Kuhn. “Experiences with Metadata.” In Proceedings 7th International Symposium on Spatial Data Handling, in press. Address of Authors Doz. Dr. Werner Kuhn Prof. Dr. Andrew U. Frank Dept. of Geoinformation, Technical University Vienna, Gusshausstrasse 27-29/127, A-1040 Wien, Telephone: (++43 1) 58801 3787, Fax: (++431) 504 3535, email: kuhn @ geoinfo.tuwien.ac.at International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B6. Vienna 1996 KEY! ABST The In begin distrit param atmos To ac Analy curren the ea detern OPS exchar INTR The p for G throug activit applic suppo perfor organi standa adhere A proc Geody campa contin establi ASSOCI Januar the Int Terms and or; The I observ object experi genera satellit

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