Showing papers on "Metadata repository published in 1994"
Patent•
08 Jun 1994
TL;DR: In this article, natural language processing is used to determine matches between the query and the stored metadata, and images corresponding to the matches are then viewed, and desired images are selected for licensing.
Abstract: Digitized images are associated with English language captions and other data, collectively known as the metadata associated with the images. A natural language processing database removes ambiguities from the metadata, and the images and the metadata are stored in databases. A user formulates a search query, and natural language processing is used to determine matches between the query and the stored metadata. Images corresponding to the matches are then viewed, and desired images are selected for licensing. The license terms for selected images are displayed, and a subset of the selected images are ordered as desired by the user.
458 citations
01 Dec 1994
TL;DR: In this article metadata for mulimedia documents are classified in conformity with their nature, and the different kinds of metadata are brought into relation with the different purposes intended.
Abstract: In this article metadata for mulimedia documents are classified in conformity with their nature, and the different kinds of metadata are brought into relation with the different purposes intended. We describe how metadata may be organized in accordance with the ISO standards SGML, which facilitates the handling of structured documents, and DFR, which supports the storage of collections of documents. Finally, we outline the impact of our observations on future developments.
95 citations
01 Dec 1994
TL;DR: In this paper, a system called Content-Based Hypermedia (CBH) is presented, which allows a user to utilize metadata to intelligently browse through a collection of media objects.
Abstract: Interacting with a multimedia information system is different from interacting with a standard text-based information system. In this paper, we present the design of a system called Content-Based Hypermedia (CBH), which allows a user to utilize metadata to intelligently browse through a collection of media objects. We describe the approach we use to model data in order to make it browsable, explore our approach to browsing, which we call metadata mediated browsing, indicate how metadata is used in the concept of similarity, present the architecture of our system, and discuss indexing techniques for similarity browsing using content-based metadata and approaches to clustering which generate higher-level metadata to help the user browse more effectively.
55 citations
28 Sep 1994
TL;DR: An architecture is outlined for implementing such functionality in many different disciplinary domains utilizing a variety of off the shelf database management subsystems and processor software, each specialized to a different abstract data model.
Abstract: An analysis is presented of the uses of metadata from four aspects of database operations:(1) search, query, retrieval; (2) ingest, quality control, processing; (3) application to application transfer; (4) storage, archive. Typical degrees of database functionality, ranging from simple file retrieval to interdisciplinary global query with metadatabase-user dialog and involving many distributed autonomous databases, are ranked in approximate order of increasing sophistication of the required knowledge representation. An architecture is outlined for implementing such functionality in many different disciplinary domains utilizing a variety of off the shelf database management subsystems and processor software, each specialized to a different abstract data model. >
44 citations
01 Dec 1994
TL;DR: This paper examines how satellite metadata are defined, used, and maintained, and describes a SQL prototype that is based on the Spatial Archive and Interchange Format standard and implemented in the Illustra object-relational database.
Abstract: Sequoia 2000 schema development is based on emerging geospatial standards to accelerate development and facilitate data exchange. This paper focuses on the metadata schema for digital satellite images. We examine how satellite metadata are defined, used, and maintained. We discuss the geospatial standards we are using, and describe a SQL prototype that is based on the Spatial Archive and Interchange Format (SAIF) standard and implemented in the Illustra object-relational database.
40 citations
01 Jan 1994
TL;DR: Techniques for comparing lineage metadata to identify equivalent cartographic data layers derived by different GIS applications are introduced and techniques to remove redundant data from a GIS database are developed.
Abstract: Lineage metadata is an abstract representation of maps and transformal logic used within a spatial analytic application of a Geographic Information System (GIS). This paper details the structure of such metadata. It introduces techniques for comparing lineage metadata to identify equivalent cartographic data layers derived by different GIS applications. These techniques are developed to remove redundant data from a GIS database. They are combined with additional techniques for identifying and updating derived data made obsolete by a change to a source map. Finally, these techniques are refined to add control when propagating upgraded source maps to a specific product stored within a spatial analytic database.
11 citations
TL;DR: This approach utilises the incorporation of semantic metadata in addition to resource metadata, resulting in a generally more powerful system than existing global directory services.
Abstract: Metadata systems are concerned with the management of data which describes other data (datasets, catalogues or actual database management systems) and are presently the subject of intensive research. Metadata systems can be used to store richly detailed forms of information, peform seamless wide-randing searches of information distributed across networks, and to integrate information stored in disparate repositories. Here we describe a model design and the methods of implementation derived from the experience of the Leicester University Metadata Project. Our approach utilises the incorporation of semantic metadata in addition to resource metadata, resulting in a generally more powerful system than existing global directory services. A feature of the class of design presented here is flexibility of implementation, with the ability to provide a coherent metadata system functioning above heterogeneous autonomous distributed databases
10 citations
30 Sep 1994
TL;DR: This work focuses on the conceptual design of metadata and considers different user view's in some detail, especially for the underlying data structures and the set of operators needed for data definition, manipulation and control.
Abstract: We consider statistical databases. They consist of three layers which refer to micro-, macro- and metadata. Metadata are viewed as data about micro- and macrodata. Metadata have non-standard characteristics, i.e. they are not fixed formatted, are highly cross-referenced and are extremely heterogenous. This is especially true for the underlying data structures and the set of operators needed for data definition, manipulation and control. Moreover, data integrity and confidentiality need special attention. We focus on the conceptual design of metadata and consider different user view's in some detail. >
9 citations
TL;DR: The RAND Metadata Management System (RMMS) is described, which is the result of a project to develop and implement specifications for storing and maintaining descriptional metadata for scientific databases.
Abstract: Users of scientific databases need descriptional information for understanding the definitions, abbreviations, acronyms, and genealogy of data stored and maintained in a database management system. This type of knowledge or metadata includes a wide range of information to help users locate, access, browse, clean, and aggregate databases. In this paper we describe the RAND Metadata Management System (RMMS), which is the result of a project to develop and implement specifications for storing and maintaining descriptional metadata. RMMS promotes the sharing, reuse, and interoperability of scientific data by improving five major DBMS data administration activities: documentation, version management, history management , derived databases, and standard data elements. We discuss the motivation for the development of RMMS, the functionality of RMMS, and its implementation architecture.
6 citations
TL;DR: The design and methods of implementation derived from the experience of the Leicester University Metadata Project are described, which utilises the incorporation of semantic metadata in addition to resource metadata, resulting in a generally more powerful system than existing global directory services.
Abstract: Metadata systems are concerned with the management of data which describes other data, whether datasets, catalogues or entire database management systems Metadata systems can be used to store richly detailed forms of information, perform seamless wide-ranging searches of information distributed across networks, and to integrate information stored in disparate repositories Here we describe the design and methods of implementation derived from the experience of the Leicester University Metadata Project (LUMP) Our approach utilises the incorporation of semantic metadata in addition to resource metadata, resulting in a generally more powerful system than existing global directory services A feature of the LUMP design is flexibility of implementation, with the ability to provide a coherent metadata system functioning above heterogeneous autonomous distributed databases
4 citations
01 Jan 1994
TL;DR: The VISTA system attempts to meet the challenge of metadata and data management by providing complete query, visualization, and analysis services.
Abstract: Data centers world-wide are currently addressing the problems associated with the maintenance, access, and analysis of geophysical and celestial databases. One approach has been to focus on the use of visualization techniques to parse and display data, thus allowing for a reduction in the overall time spent in the analysis process. Metadata (information about data) management and visualization techniques are both important elements in this endeavour. Graphical user interface systems, like the Visual Interface for Space and Terrestrial Analysis (VISTA), provide a visually oriented environment that allows for quick and efficient data assessment. The VISTA system attempts to meet the challenge of metadata and data management by providing complete query, visualization, and analysis services. >