Search (56 results, page 1 of 3)

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Abstract

Analytico-synthetic and faceted classifications, such as Universal Decimal Classification (UDC) provide facilities to express pre-coordinated subject statements using syntactic relations. In this case, the relevance, in the process of UDC-based information retrieval, can be determined by extracting the meaning of the classmarks as precisely as is possible. The central question here is how the identification mentioned above can be supported by automatic means and an analysis of the structure of complex classmarks appears to be an obvious requirement. Many bibliographic sources contain complex UDC classmarks which are stored as simple text strings and on which it is very difficult to perform any meaningful information discovery. The paper presents results from a phase of ongoing research focused on developing a new platform-independent, machine-processable data format capable of representing the whole syntactic structure of the composite UDC numbers to support their further automatic processing. An algorithm that can produce the representation of the numbers in such a format directly from their designations has also been developed and implemented. The research also includes implementing conversion methods to provide outputs that can be employed by other software directly and, as a service, make them available for other software. The paper provides an overview of the solutions developed and implemented since 2015 and outlines future research plans.

Content

Beitrag in einem Special Issue: Selected Papers from the International UDC Seminar 2017, Faceted Classification Today: Theory, Technology and End Users, 14-15 September, London UK.

Date

29. 9.2017 19:04:25

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Abstract

Examines the changes and trends in the developments and revisions of UDC in the context of a critique made by Neelameghan in 1972 on the need for a theoretical basis for UDC. The impact of Ranganathan's faceted approach as also his General Theory of Classification on the revision of UDC has been explained with illustrations from the recent revisions of UDC with particular emphasis on developments in the last decade.

Date

29. 2.2008 15:51:21

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Abstract

The German translation of the Dewey Decimal Classification (DDC) system has had a transformational effect on the DDC in terms of DDC content, the underlying translation support system, representation of the DDC in electronic files, new uses of the DDC, mappings, collaboration with the Dewey editorial team and other members of the worldwide Dewey community, and ongoing research and development. This paper highlights some of the contributions of the German translation to each of these areas produced under the visionary leadership of Magda Heiner-Freiling.

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Abstract

The paper will look into different patterns of facet analysis used in the UDC schedules and how these affect the scheme presentation, the underlying data structure and the management of the classification scheme. From the very beginning, UDC was designed to represent the universe of knowledge as an integral whole allowing for subjects/concepts from all fields of knowledge to be combined, linked and the nature of their relationships made explicit. In Otlet's original design, the emphasis for his new type of classification was on the coordination of classmarks at the point of searching, i.e., post-coordination, which he firmly rooted in an expressive notational system. While some UDC classes exhibit various patterns of facet analytical theory proper, others, although used in an analytico-synthetic fashion, follow less canonical structural patterns. The authors highlight the lack of connection made throughout the various stages of UDC restructuring between: a) theoretical requirements of an overarching facet analytical theory as a founding principle guiding the construction of schedules; and, b) practical requirements for an analytico-synthetic classification in terms of notational presentation and data structure that enables its use in indexing and retrieval, as well as its management online.

Content

Beitrag in einem Special Issue: Selected Papers from the International UDC Seminar 2017, Faceted Classification Today: Theory, Technology and End Users, 14-15 September, London UK.

Date

29. 9.2017 19:07:18

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Abstract

In 2003, OCLC published Dewey Decimal Classification and Relative Index, Edition 22 (DDC 22), in print and Web versions. The changes and updates in the new edition reflect a modern view of knowledge structures and address the general needs of Dewey users. The content of DDC 22 has been shaped by a number of social, geopolitical, and technical trends. The World Wide Web has provided a vehicle for more frequent distribution of updates to the DDC, and a medium for direct communication with Dewey users around the world. In addition to updating the system itself, other strategies are needed to accommodate the needs of the global Dewey user community. Translation of the system is one approach; another is mapping. Mapping terminology to the DDC is a strategy for supporting effective local implementation of the system while maintaining the internal cohesiveness of the DDC. This paper explores the usefulness of mapping terminology from English-language general subject headings lists produced outside the U.S.

Date

29. 8.2004 13:40:26

Object

DDC-22

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Date

29. 1.1996 16:50:24

Source

Bulletin d'informations de l'Association des Bibliothecaires Francais. 1997, no.175, S.22-23

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Abstract

In diesem Beitrag wird die Zielsetzung und die geplante Durchführung des Projektes DDC Deutsch zur Herstellung einer deutschen Version der 22. Ausgabe der Dewey Decimal Classification näher beschrieben. Es werden Gründe für die Durchführung des Vorhabens diskutiert und der erwartete spätere Nutzen beschrieben.

Date

28.11.2004 13:29:01

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Abstract

This book examines a core topic in traditional librarianship: classification. Classification has often been treated as a sub-set of cataloguing and indexing with relatively few basic textbooks concentrating solely an the theory and practice of classifying resources. This book attempts to redress the balance somewhat. The aim is to demystify a complex subject, by providing a sound theoretical underpinning, together with practical advice and promotion of practical skills. The text is arranged into five chapters: Chapter 1: Classification in theory and practice. This chapter explores theories of classification in broad terms and then focuses an the basic principles of library classification, introducing readers to technical terminology and different types of classification scheme. The next two chapters examine individual classification schemes in depth. Each scheme is explained using frequent examples to illustrate basic features. Working through the exercises provided should be enjoyable and will enable readers to gain practical skills in using the three most widely used general library classification schemes: Dewey Decimal Classification, Library of Congress Classification and Universal Decimal Classification. Chapter 2: Classification schemes for general collections. Dewey Decimal and Library of Congress classifications are the most useful and popular schemes for use in general libraries. The background, coverage and structure of each scheme are examined in detail in this chapter. Features of the schemes and their application are illustrated with examples. Chapter 3: Classification schemes for specialist collections. Dewey Decimal and Library of Congress may not provide sufficient depth of classification for specialist collections. In this chapter, classification schemes that cater to specialist needs are examined. Universal Decimal Classification is superficially very much like Dewey Decimal, but possesses features that make it a good choice for specialist libraries or special collections within general libraries. It is recognised that general schemes, no matter how deep their coverage, may not meet the classification needs of some collections. An answer may be to create a special classification scheme and this process is examined in detail here. Chapter 4: Classifying electronic resources. Classification has been reborn in recent years with an increasing need to organise digital information resources. A lot of work in this area has been conducted within the computer science discipline, but uses basic principles of classification and thesaurus construction. This chapter takes a broad view of theoretical and practical issues involved in creating classifications for digital resources by examining subject trees, taxonomies and ontologies. Chapter 5: Summary. This chapter provides a brief overview of concepts explored in depth in previous chapters. Development of practical skills is emphasised throughout the text. It is only through using classification schemes that a deep understanding of their structure and unique features can be gained. Although all the major schemes covered in the text are available an the Web, it is recommended that hard-copy versions are used by those wishing to become acquainted with their overall structure. Recommended readings are supplied at the end of each chapter and provide useful sources of additional information and detail. Classification demands precision and the application of analytical skills, working carefully through the examples and the practical exercises should help readers to improve these faculties. Anyone who enjoys cryptic crosswords should recognise a parallel: classification often involves taking the meaning of something apart and then reassembling it in a different way.

Footnote

The heart of the book lies in its exceptionally clear and well illustrated explanation of each of the classification schemes. These are presented comprehensively, but also in gratifying detail, down to the meaning of the various enigmatic notes and notations, such as "config" or "class elsewhere" notes, each simply explained, as if a teacher were standing over your shoulder leading you through it. Such attention at such a fine level may seem superfluous or obvious to a seasoned practitioner, but it is in dealing with such enigmatic details that we find students getting discouraged and confused. That is why I think this would be an excellent text, especially as a book to hold in one hand and the schedules themselves in the other. While the examples throughout and the practical exercises at the end of each chapter are slanted towards British topics, they are aptly Chosen and should present no problem of understanding to a student anywhere. As mentioned, this is an unabashedly practical book, focusing an classification as it has been and is presently applied in libraries for maintaining a "useful book order." It aims to develop those skills that would allow a student to learn how it is done from a procedural rather than a critical perspective. At times, though, one wishes for a bit more of a critical approach - one that would help a student puzzle through some of the ambiguities and issues that the practice of classification in an increasingly global rather than local environment entails. While there is something to be said for a strong foundation in existing practice (to understand from whence it all came), the author essentially accepts the status quo, and ventures almost timidly into any critique of the content and practice of existing classification schemes. This lack of a critical analysis manifests itself in several ways: - The content of the classification schemes as described in this book is treated as fundamentally "correct" or at least "given." This is not to say the author doesn't recognize anomalies and shortcomings, but that her approach is to work with what is there. Where there are logical flaws in the knowledge representation structures, the author takes the approach that there are always tradeoffs, and one must simply do the best one can. This is certainly true for most people working in libraries where the choice of scheme is not controlled by the classifier, and it is a wonderful skill indeed to be able to organize creatively and carefully despite imperfect systems. The approach is less convincing, however, when it is also applied to emerging or newly developed schemes, such as those proposed for organizing electronic resources. Here, the author could have been a bit braver in at least encouraging less normative approaches. - There is also a lingering notion that classification is a precise science. For example the author states (p. 13): Hospitality is the ability to accommodate new topics and concepts in their correct place in the schedules ... Perfect hospitality world mean that every new subject could be accommodated in the most appropriate place in the schedules. In practice, schemes do manage to fit new subjects in, but not necessarily in their most appropriate place. It world have been helpful to acknowledge that for many complex subjects there is no one appropriate place. The author touches an this dilemma, but in passing, and not usually when she is providing practical pointers.

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Date

29. 8.2004 13:42:31

Object

DDC-22

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Abstract

This paper aims at exploring the changes in the role and representation of information retrieval languages, particularly the UDC system in the digital, online environment and the Internet. The Totalzoom Technology takes a different approach, with the help of which even a lay user can easily navigate in the "informational space". This system follows the free associative nature of human thinking. Technically, it works with the wide degree of freedom afforded by a logical-associative network, coupled with a hierarchical search tree as an inner auxiliary structure.

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Source

Challenges in knowledge representation and organization for the 21st century: Integration of knowledge across boundaries. Proceedings of the 7th ISKO International Conference Granada, Spain, July 10-13, 2002. Ed.: M. López-Huertas

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Source

Knowledge quest. 42(2013) no.2, S.22-29

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Date

25. 9.1997 13:29:15

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Abstract

Dewey Decimal Classification and Relative Index, Edition 22 (DDC 22) will be issued simultaneously in print and web versions in July 2003. The new edition is the first full print update to the Dewey Decimal Classification system in seven years-it includes several significant updates and many new numbers and topics. DDC 22 also features some fundamental structural changes that have been introduced with the goals of promoting classifier efficiency and improving the DDC for use in a variety of applications in the web environment. Most importantly, the content of the new edition has been shaped by the needs and recommendations of Dewey users around the world. The worldwide user community has an important role in shaping the future of the DDC.

Object

DDC-22

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Source

DK-Mitteilungen. 29(1985) Nr.5, S.15-18

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Source

Libri. 29(1979) no.2, S.169-188

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Date

27. 1.2002 19:31:29

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Abstract

Critical race theory is introduced as a potentially useful approach to the evaluation of bibliographic classification schemes. An overview is presented of the essential elements of critical race theory, including clarifications of the meanings of some important terms such as "race" and "social justice." On the basis of a review of existing conceptions of the just and the antiracist library service, a rationale is presented for hypothesizing that critical race theory may be of use to the library and information sciences. The role of classification schemes as information institutions in their own right is established, and the Dewey Decimal Classification is introduced as the case to be studied. The challenges faced by classification-scheme designers in the construction and reconstruction of racerelated categories are reviewed; and an analysis is presented of one sense in which it might be suggested that recent (2003) revisions in one of the DDC's tables appear not to meet those challenges wholly successfully. An account is given of a further sense in which adoption of a critical race-theoretic approach has the more radical effect of calling into question a fundamental decision recently taken to "deracialize" the DDC. In conclusion, an assessment is made of critical race theory as a framework for evaluating library classification schemes.

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Source

Buletin asociatia bibliotecarilor din învatamant - Romania. 11(2000) no.2, S.29-32

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Source

Dialog mit Bibliotheken. 13(2001) H.2, S.29-31