-
Kopácsi, S. et al.: Development of a classification server to support metadata harmonization in a long term preservation system (2016)
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- Source
- Metadata and semantics research: 10th International Conference, MTSR 2016, Göttingen, Germany, November 22-25, 2016, Proceedings. Eds.: E. Garoufallou
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Kent, R.E.: Organizing conceptual knowledge online : metadata interoperability and faceted classification (1998)
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- Abstract
- Conceptual Knowledge Markup Language (CKML), an application of XML, is a new standard being promoted for the specification of online conceptual knowledge (Kent and Shrivastava, 1998). CKML follows the philosophy of Conceptual Knowledge Processing (Wille, 1982), a principled approach to knowledge representation and data analysis, which advocates the development of methodologies and techniques to support people in their rational thinking, judgement and actions. CKML was developed and is being used in the WAVE networked information discovery and retrieval system (Kent and Neuss, 1994) as a standard for the specification of conceptual knowledge
- Date
- 30.12.2001 16:22:41
- Theme
- Klassifikationssysteme im Online-Retrieval
-
Carvalho, J.R. de; Cordeiro, M.I.; Lopes, A.; Vieira, M.: Meta-information about MARC : an XML framework for validation, explanation and help systems (2004)
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- Abstract
- This article proposes a schema for meta-information about MARC that can express at a fairly comprehensive level the syntactic and semantic aspects of MARC formats in XML, including not only rules but also all texts and examples that are conveyed by MARC documentation. It can be thought of as an XML version of the MARC or UNIMARC manuals, for both machine and human usage. The article explains how such a schema can be the central piece of a more complete framework, to be used in conjunction with "slim" record formats, providing a rich environment for the automated processing of bibliographic data.
- Source
- Library hi tech. 22(2004) no.2, S.131-137
-
Franklin, R.A.: Re-inventing subject access for the semantic web (2003)
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- Abstract
- First generation scholarly research on the Web lacked a firm system of authority control. Second generation Web research is beginning to model subject access with library science principles of bibliographic control and cataloguing. Harnessing the Web and organising the intellectual content with standards and controlled vocabulary provides precise search and retrieval capability, increasing relevance and efficient use of technology. Dublin Core metadata standards permit a full evaluation and cataloguing of Web resources appropriate to highly specific research needs and discovery. Current research points to a type of structure based on a system of faceted classification. This system allows the semantic and syntactic relationships to be defined. Controlled vocabulary, such as the Library of Congress Subject Headings, can be assigned, not in a hierarchical structure, but rather as descriptive facets of relating concepts. Web design features such as this are adding value to discovery and filtering out data that lack authority. The system design allows for scalability and extensibility, two technical features that are integral to future development of the digital library and resource discovery.
- Date
- 30.12.2008 18:22:46
-
Renear, A.H.; Wickett, K.M.; Urban, R.J.; Dubin, D.; Shreeves, S.L.: Collection/item metadata relationships (2008)
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- Abstract
- Contemporary retrieval systems, which search across collections, usually ignore collection-level metadata. Alternative approaches, exploiting collection-level information, will require an understanding of the various kinds of relationships that can obtain between collection-level and item-level metadata. This paper outlines the problem and describes a project that is developing a logic-based framework for classifying collection/item metadata relationships. This framework will support (i) metadata specification developers defining metadata elements, (ii) metadata creators describing objects, and (iii) system designers implementing systems that take advantage of collection-level metadata. We present three examples of collection/item metadata relationship categories, attribute/value-propagation, value-propagation, and value-constraint and show that even in these simple cases a precise formulation requires modal notions in addition to first-order logic. These formulations are related to recent work in information retrieval and ontology evaluation.
- Source
- Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
-
Jun, W.: ¬A knowledge network constructed by integrating classification, thesaurus and metadata in a digital library (2003)
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- Abstract
- Knowledge management in digital libraries is a universal problem. Keyword-based searching is applied everywhere no matter whether the resources are indexed databases or full-text Web pages. In keyword matching, the valuable content description and indexing of the metadata, such as the subject descriptors and the classification notations, are merely treated as common keywords to be matched with the user query. Without the support of vocabulary control tools, such as classification systems and thesauri, the intelligent labor of content analysis, description and indexing in metadata production are seriously wasted. New retrieval paradigms are needed to exploit the potential of the metadata resources. Could classification and thesauri, which contain the condensed intelligence of generations of librarians, be used in a digital library to organize the networked information, especially metadata, to facilitate their usability and change the digital library into a knowledge management environment? To examine that question, we designed and implemented a new paradigm that incorporates a classification system, a thesaurus and metadata. The classification and the thesaurus are merged into a concept network, and the metadata are distributed into the nodes of the concept network according to their subjects. The abstract concept node instantiated with the related metadata records becomes a knowledge node. A coherent and consistent knowledge network is thus formed. It is not only a framework for resource organization but also a structure for knowledge navigation, retrieval and learning. We have built an experimental system based on the Chinese Classification and Thesaurus, which is the most comprehensive and authoritative in China, and we have incorporated more than 5000 bibliographic records in the computing domain from the Peking University Library. The result is encouraging. In this article, we review the tools, the architecture and the implementation of our experimental system, which is called Vision.
- Source
- Bulletin of the American Society for Information Science. 29(2003) no.2, S.24-28
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Heidorn, P.B.; Wei, Q.: Automatic metadata extraction from museum specimen labels (2008)
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- Abstract
- This paper describes the information properties of museum specimen labels and machine learning tools to automatically extract Darwin Core (DwC) and other metadata from these labels processed through Optical Character Recognition (OCR). The DwC is a metadata profile describing the core set of access points for search and retrieval of natural history collections and observation databases. Using the HERBIS Learning System (HLS) we extract 74 independent elements from these labels. The automated text extraction tools are provided as a web service so that users can reference digital images of specimens and receive back an extended Darwin Core XML representation of the content of the label. This automated extraction task is made more difficult by the high variability of museum label formats, OCR errors and the open class nature of some elements. In this paper we introduce our overall system architecture, and variability robust solutions including, the application of Hidden Markov and Naïve Bayes machine learning models, data cleaning, use of field element identifiers, and specialist learning models. The techniques developed here could be adapted to any metadata extraction situation with noisy text and weakly ordered elements.
- Source
- Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
-
Ecker, R.: ¬Das digitale Buch im Internet : Methoden der Erfassung, Aufbereitung und Bereitstellung (1998)
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- Content
- Beschreibt den Prozeß der digitalisierten Aufbereitung von Text und Bild etc. über Scannen
- Date
- 29. 8.2000 11:59:32
-
Understanding metadata (2004)
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- Abstract
- Metadata (structured information about an object or collection of objects) is increasingly important to libraries, archives, and museums. And although librarians are familiar with a number of issues that apply to creating and using metadata (e.g., authority control, controlled vocabularies, etc.), the world of metadata is nonetheless different than library cataloging, with its own set of challenges. Therefore, whether you are new to these concepts or quite experienced with classic cataloging, this short (20 pages) introductory paper on metadata can be helpful
- Date
- 10. 9.2004 10:22:40
-
Peereboom, M.: DutchESS : Dutch Electronic Subject Service - a Dutch national collaborative effort (2000)
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- Abstract
- This article gives an overview of the design and organisation of DutchESS, a Dutch information subject gateway created as a national collaborative effort of the National Library and a number of academic libraries. The combined centralised and distributed model of DutchESS is discussed, as well as its selection policy, its metadata format, classification scheme and retrieval options. Also some options for future collaboration on an international level are explored
- Date
- 22. 6.2002 19:39:23
- Theme
- Klassifikationssysteme im Online-Retrieval
-
Tammaro, A.M.: Catalogando, catalogando ... metacatalogando (1997)
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- Abstract
- A crucial question for librarians is whether to catalogue Internet information sources, and electronic sources in general, which may contain metainformation of the texts of articles. Librarians can help researchers with data identification and access in 4 ways: making OPAC available on the Internet; providing a complete selection of Gopher, Ftp, WWW, etc. site lists; maintaining a Web site, coordinateted by the library, that functions as an Internet access point; and organising access to existing search engines that do automatic indexing. Briefly reviews several metadata formats, including USMARC field 856, IAFA templates, SOIP (Harvest), TEI Headers, Capcas Head and URC
- Date
- 29. 1.1996 17:18:10
-
Wu, C.-J.: Experiments on using the Dublin Core to reduce the retrieval error ratio (1998)
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- Abstract
- In order to test the power of metadata on information retrieval, an experiment was designed and conducted on a group of 7 graduate students using the Dublin Core as the cataloguing metadata. Results show that, on average, the retrieval error rate is only 2.9 per cent for the MES system (http://140.136.85.194), which utilizes the Dublin Core to describe the documents on the World Wide Web, in contrast to 20.7 per cent for the 7 famous search engines including HOTBOT, GAIS, LYCOS, EXCITE, INFOSEEK, YAHOO, and OCTOPUS. The very low error rate indicates that the users can use the information of the Dublin Core to decide whether to retrieve the documents or not
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Peters, I.; Stock, W.G.: Power tags in information retrieval (2010)
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- Abstract
- Purpose - Many Web 2.0 services (including Library 2.0 catalogs) make use of folksonomies. The purpose of this paper is to cut off all tags in the long tail of a document-specific tag distribution. The remaining tags at the beginning of a tag distribution are considered power tags and form a new, additional search option in information retrieval systems. Design/methodology/approach - In a theoretical approach the paper discusses document-specific tag distributions (power law and inverse-logistic shape), the development of such distributions (Yule-Simon process and shuffling theory) and introduces search tags (besides the well-known index tags) as a possibility for generating tag distributions. Findings - Search tags are compatible with broad and narrow folksonomies and with all knowledge organization systems (e.g. classification systems and thesauri), while index tags are only applicable in broad folksonomies. Based on these findings, the paper presents a sketch of an algorithm for mining and processing power tags in information retrieval systems. Research limitations/implications - This conceptual approach is in need of empirical evaluation in a concrete retrieval system. Practical implications - Power tags are a new search option for retrieval systems to limit the amount of hits. Originality/value - The paper introduces power tags as a means for enhancing the precision of search results in information retrieval systems that apply folksonomies, e.g. catalogs in Library 2.0environments.
-
Strötgen, R.: Treatment of semantic heterogeneity using meta-data extraction and query translation (2002)
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- Abstract
- The project CARMEN ("Content Analysis, Retrieval and Metadata: Effective Networking") aimed - among other goals - at improving the expansion of searches in bibliographic databases into Internet searches. We pursued a set of different approaches to the treatment of semantic heterogeneity (meta-data extraction, query translation using statistic relations and Cross-concordances). This paper describes the concepts and implementation of these approaches and the evaluation of the impact for the retrieval result.
- Source
- Gaining insight from research information (CRIS2002): Proceedings of the 6th International Conference an Current Research Information Systems, University of Kassel, August 29 - 31, 2002. Eds: W. Adamczak u. A. Nase
-
Cortez, E.M.: Use of metadata vocabularies in data retrieval (1999)
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- Abstract
- Researchers have developed a prototype of a system that uses metadata to guide their user in selecting document databases of interest. A standardized vocabulary is used to index the document sets and is also used to locate databases. Once a database is located, then freeform searches are aided by the metadata vocabulary to locate specific documents. This system, the Research, Education, Economic Information System (REEIS), is being developed fot the USDA to provide a way to locate programs, projects, and research that focus on food, agriculture, natural resources and rural development
-
Gardner, T.; Iannella, R.: Architecture and software solutions (2000)
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- Abstract
- The current subject gateways have evolved over time when the discipline of Internet resource discovery was in its infancy. This is reflected by the lack of well-established, light-weight, deployable, easy-to-use, standards for metadata and information retrieval. We provide an introduction to the architecture, standards and software solutions in use by subject gateways, and to the issues that must be addressed to support future subject gateways
- Date
- 22. 6.2002 19:38:24
-
Smiraglia, R.P.: Content metadata : an analysis of Etruscan artifacts in a museum of archeology (2005)
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- Abstract
- Metadata schemes target resources as information-packages, without attention to the distinction between content and carrier. Most schema are derived without empirical understanding of the concepts that need to be represented, the ways in which terms representing the central concepts might best be derived, and how metadata descriptions will be used for retrieval. Research is required to resolve this dilemma, and much research will be required if the plethora of schemes that already exist are to be made efficacious for resource description and retrieval. Here I report the results of a preliminary study, which was designed to see whether the bibliographic concept of "the work" could be of any relevance among artifacts held by a museum. I extend the "works metaphor" from the bibliographic to the artifactual domain, by altering the terms of the definition slightly, thus: 1) instantiation is understood as content genealogy. Case studies of Etruscan artifacts from the University of Pennsylvania Museum of Archaeology and Anthropology are used to demonstrate the inherence of the work in non-documentary artifacts.
- Date
- 29. 9.2008 19:14:41
-
Wu, C.-J.: Metadata and future developments in cataloguing (1997)
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- Abstract
- Metadata is a resource which can assist the information retrieval of digital documents on the Internet. In designing a metadata system, it is necessary to consider the characteristics of digital documents, such as the variety of file formats, frequent format transformation and the difficulty of distinguishing between the different versions. Provides a brief analysis of some existing metadata formats, and introduces several pronciples for the future development of cataloguing on the Internet. Briefly describes the Metadata Experimental System (MES) currently under development, and located at the author's homepage
-
Schaefer, M.T.: Demystifying metadata : initiatives for web document description (1998)
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- Abstract
- Examines international efforts to promote metadata as a common, interactive resource description tool for the Internet. These efforts centre on the Dublin Core Element Set, but include qualifiers such as those promoted by the Canberra Qualifiers. The LoC Network Development and MARC Standards Office maintains the Dublin Core / MARC / GILS (Government Information Location Standards) crosswalk which maps the common and correlative elements of each system. Describes current international initiatives and issues. Describes the Nordic metadata project which is aiming to create the basic elements of a metadata production and utilization system based on the Dublin Core Metadata Element Set. Describes the WWW consortium efforts in this area
- Source
- Information retrieval and library automation. 33(1998) no.11, S.1-5
-
Plümer, J.: Metadaten in den wissenschaftlichen Fachgesellschaften (2000)
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- Abstract
- Wissenschaftler nutzen Dublin Core Metadaten im Internet einerseits zur besseren Verfügbarkeit ihrer Arbeitsergebnisse, andererseits zur besseren Darstellung ihrer Arbeitsgruppen, Lehrveranstaltungen und Forschungsprojekte. Die Metadaten erlauben ein qualitativ hochwertiges Retrieval auf diesem spezifischen Material. die Nutzung von Retrievalwerkzeugen und das Angebot von Indexen dieser Materialien, sowie die Bereitstellung von Metadaten wird seit einigen Jahren von den Wissenschaftlern selbst übernommen. Die dazu verwendeten technischen Methoden und Organisationsstrukturen werden exemplarisch am Mathematics PREprint Search System vorgestellt
