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Abstract

RDF - the Resource Description Framework - is a foundation for processing metadata; it provides interoperability between applications that exchange machine-understandable information on the Web. RDF emphasizes facilities to enable automated processing of Web resources. RDF metadata can be used in a variety of application areas; for example: in resource discovery to provide better search engine capabilities; in cataloging for describing the content and content relationships available at a particular Web site, page, or digital library; by intelligent software agents to facilitate knowledge sharing and exchange; in content rating; in describing collections of pages that represent a single logical "document"; for describing intellectual property rights of Web pages, and in many others. RDF with digital signatures will be key to building the "Web of Trust" for electronic commerce, collaboration, and other applications. Metadata is "data about data" or specifically in the context of RDF "data describing web resources." The distinction between "data" and "metadata" is not an absolute one; it is a distinction created primarily by a particular application. Many times the same resource will be interpreted in both ways simultaneously. RDF encourages this view by using XML as the encoding syntax for the metadata. The resources being described by RDF are, in general, anything that can be named via a URI. The broad goal of RDF is to define a mechanism for describing resources that makes no assumptions about a particular application domain, nor defines the semantics of any application domain. The definition of the mechanism should be domain neutral, yet the mechanism should be suitable for describing information about any domain. This document introduces a model for representing RDF metadata and one syntax for expressing and transporting this metadata in a manner that maximizes the interoperability of independently developed web servers and clients. The syntax described in this document is best considered as a "serialization syntax" for the underlying RDF representation model. The serialization syntax is XML, XML being the W3C's work-in-progress to define a richer Web syntax for a variety of applications. RDF and XML are complementary; there will be alternate ways to represent the same RDF data model, some more suitable for direct human authoring. Future work may lead to including such alternatives in this document.

Content

RDF Data Model At the core of RDF is a model for representing named properties and their values. These properties serve both to represent attributes of resources (and in this sense correspond to usual attribute-value-pairs) and to represent relationships between resources. The RDF data model is a syntax-independent way of representing RDF statements. RDF statements that are syntactically very different could mean the same thing. This concept of equivalence in meaning is very important when performing queries, aggregation and a number of other tasks at which RDF is aimed. The equivalence is defined in a clean machine understandable way. Two pieces of RDF are equivalent if and only if their corresponding data model representations are the same. Table of contents 1. Introduction 2. RDF Data Model 3. RDF Grammar 4. Signed RDF 5. Examples 6. Appendix A: Brief Explanation of XML Namespaces

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Abstract

SKOS (Simple Knowledge Organisation System) provides a model for expressing the basic structure and content of concept schemes such as thesauri, classification schemes, subject heading lists, taxonomies, folksonomies, and other types of controlled vocabulary. As an application of the Resource Description Framework (RDF) SKOS allows concepts to be documented, linked and merged with other data, while still being composed, integrated and published on the World Wide Web. This document is an implementors guide for those who would like to represent their concept scheme using SKOS. In basic SKOS, conceptual resources (concepts) can be identified using URIs, labelled with strings in one or more natural languages, documented with various types of notes, semantically related to each other in informal hierarchies and association networks, and aggregated into distinct concept schemes. In advanced SKOS, conceptual resources can be mapped to conceptual resources in other schemes and grouped into labelled or ordered collections. Concept labels can also be related to each other. Finally, the SKOS vocabulary itself can be extended to suit the needs of particular communities of practice.

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Abstract

The principles here stated apply only to the choice and form of headings and entry words - i.e. to the principal elements determining the order of entries - in catalogues of printed books in which entries under authors' names and, where these are inappropriate or insufficient, under the titles of works are combined in one alphabetical sequence. They are framed with special reference to catalogues enumerating the contents of large general libraries: but their application to the catalogues of other libraries and to other alphabetical lists of books is also recommended, with such modifications as may be required by the purposes of these catalogues and lists.

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Abstract

This draft standard defines almost 400 separate three-character alphabetic codes to indicate language in the interchange of information. The list is based on the US MARC list, the revision updates the first one of 1987

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Abstract

Computer software can sometimes defy description! Z39.67 gives guidelines for unequivocally describing software in advertising, on the packaging and carrier and labels and on title screens

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Footnote

Rez. in: Library journal 119(1994) no.17, S.91 ( P. Kelly)

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Footnote

Rez. in: ABI-Technik 16(1996) H.3, S.320-322 (R. Frankenberger)

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Abstract

The original Statement of Principles - commonly known as the "Paris Principles" - was approved by the International Conference on Cataloguing Principles in 1961. Its goal of serving as a basis for international standardization in cataloguing has certainly been achieved: most of the cataloguing codes that were developed worldwide since that time have followed the Principles strictly or at least to a high degree. More than fifty years later, having a common set of international cataloguing principles is still necessary as cataloguers and users around the world use online catalogues as search and discovery systems. At the beginning of the 21st century, IFLA produced a new statement of principles (published in 2009) applicable to online library catalogues and beyond. The current version has been reviewed and updated in 2014 and 2015, and approved in 2016. The 2009 Statement of Principles replaced and explicitly broadened the scope of the Paris Principles from just textual resources to all types of resources, and from just the choice and form of entry to all aspects of bibliographic and authority data used in library catalogues. It included not only principles and objectives, but also guiding rules that should be included in cataloguing codes internationally, as well as guidance on search and retrieval capabilities. This 2016 edition takes into consideration new categories of users, the open access environment, the interoperability and the accessibility of data, features of discovery tools and the significant change of user behaviour in general. This statement builds on the great cataloguing traditions of the world, as well as on the conceptual models in the IFLA Functional Requirements family.

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Abstract

This description of OWL, the Web Ontology Language being designed by the W3C Web Ontology Working Group, contains a high-level abstract syntax for both OWL DL and OWL Lite, sublanguages of OWL. A model-theoretic semantics is given to provide a formal meaning for OWL ontologies written in this abstract syntax. A model-theoretic semantics in the form of an extension to the RDF semantics is also given to provide a formal meaning for OWL ontologies as RDF graphs (OWL Full). A mapping from the abstract syntax to RDF graphs is given and the two model theories are shown to have the same consequences on OWL ontologies that can be written in the abstract syntax.

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Abstract

Useful to system designers that want to specify a uniform command terminology, Z39.58-1992 describes nineteen non-proprietary command terms for use in online information retrieval systems. Defines the vocabulary, syntax, and operational meaning of the commands

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Abstract

This standard provides the basic terms and their definitions in the field of information and documentation for the purpose of promoting and facilitating knowledge sharing and information exchange. This International Standard presents terms and definitions of selected concepts relevant to the field of information and documentation. If a definition is from other standards, the priority of selection is TC46 technical standards, then technical standards in relevant field, and then terminology related standards. The scope of this International Standard corresponds to that of ISO/TC46, Standardization of practices relating to libraries, documentation and information centres, publishing, archives, records management, museum documentation, indexing and abstracting services, and information science. ISO 5127 was prepared by Technical Committee ISO/TC 46, Information and Documentation, WG4, Terminology of information and documentation. This second edition cancels and replaces the first edition (ISO 5127:2001), which has been technically revised to overcome problems in the practical application of ISO 5127:2001 and to take account of the new developments in the field of information and documentation.

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Abstract

Defines fifteen metadata elements for resource description in a cross-disciplinary information environment

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Abstract

Defines fifteen metadata elements for resource description in a cross-disciplinary information environment.

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Abstract

This invaluable cataloging resource gives pre-service and practicing school library media specialists the tools they need to be intelligent consumers of commercial cataloging and competent organizers of new materials in their collections. The second edition contains expanded information on Library of Congress Subject Headings and electronic cataloging and cataloging systems, as well as Dewey Decimal Classification (DDC) and Machine Readable Cataloging (MARC). Whether you're a practicing cataloger looking for a short text to update you on the application of RDA to cataloging records or a school librarian who needs a quick resource to answer cataloging questions, this guide is for you. - Thoroughly updates a best-selling, essential guide to cataloging - Addresses the new standards specifically as they apply to school libraries - Helps school librarians understand and implement the new cataloging standards in their collections - Distills the latest information and presents it in a format that is clear and accessible - Fills the need for up-to-the-minute cataloging guidance for the busy librarian who wants information in a hurry

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Abstract

The World Wide Web as it is currently constituted resembles a poorly mapped geography. Our insight into the documents and capabilities available are based on keyword searches, abetted by clever use of document connectivity and usage patterns. The sheer mass of this data is unmanageable without powerful tool support. In order to map this terrain more precisely, computational agents require machine-readable descriptions of the content and capabilities of Web accessible resources. These descriptions must be in addition to the human-readable versions of that information. The OWL Web Ontology Language is intended to provide a language that can be used to describe the classes and relations between them that are inherent in Web documents and applications. This document demonstrates the use of the OWL language to - formalize a domain by defining classes and properties of those classes, - define individuals and assert properties about them, and - reason about these classes and individuals to the degree permitted by the formal semantics of the OWL language. The sections are organized to present an incremental definition of a set of classes, properties and individuals, beginning with the fundamentals and proceeding to more complex language components.

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Footnote

Vgl. auch: Crestadoro, A.: The art of making catalogues of libraries: or, a method to obtain in a short time a most perfect, complete, and satisfactory printed catalog of the British Museum Library / by a reader therein [i.e. A. Crestadoro]. London: Published and sold by The Literary, Scientific & Artistic Reference Office 1856.

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Abstract

The OWL 2 Web Ontology Language, informally OWL 2, is an ontology language for the Semantic Web with formally defined meaning. OWL 2 ontologies provide classes, properties, individuals, and data values and are stored as Semantic Web documents. OWL 2 ontologies can be used along with information written in RDF, and OWL 2 ontologies themselves are primarily exchanged as RDF documents. This document serves as an introduction to OWL 2 and the various other OWL 2 documents. It describes the syntaxes for OWL 2, the different kinds of semantics, the available profiles (sub-languages), and the relationship between OWL 1 and OWL 2.

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Abstract

The OWL Web Ontology Language is designed for use by applications that need to process the content of information instead of just presenting information to humans. OWL facilitates greater machine interpretability of Web content than that supported by XML, RDF, and RDF Schema (RDF-S) by providing additional vocabulary along with a formal semantics. OWL has three increasingly-expressive sublanguages: OWL Lite, OWL DL, and OWL Full. This document is written for readers who want a first impression of the capabilities of OWL. It provides an introduction to OWL by informally describing the features of each of the sublanguages of OWL. Some knowledge of RDF Schema is useful for understanding this document, but not essential. After this document, interested readers may turn to the OWL Guide for more detailed descriptions and extensive examples on the features of OWL. The normative formal definition of OWL can be found in the OWL Semantics and Abstract Syntax.

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Abstract

SKOS Core provides a model for expressing the basic structure and content of concept schemes such as thesauri, classification schemes, subject heading lists, taxonomies, 'folksonomies', other types of controlled vocabulary, and also concept schemes embedded in glossaries and terminologies. The SKOS Core Vocabulary is an application of the Resource Description Framework (RDF), that can be used to express a concept scheme as an RDF graph. Using RDF allows data to be linked to and/or merged with other data, enabling data sources to be distributed across the web, but still be meaningfully composed and integrated. This document is a guide using the SKOS Core Vocabulary, for readers who already have a basic understanding of RDF concepts. This edition of the SKOS Core Guide [SKOS Core Guide] is a W3C Public Working Draft. It is the authoritative guide to recommended usage of the SKOS Core Vocabulary at the time of publication.