Search (22 results, page 1 of 2)

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Abstract

The development of the Semantic Web, with machine-readable content, has the potential to revolutionise the World Wide Web and its use. A Semantic Web Primer provides an introduction and guide to this emerging field, describing its key ideas, languages and technologies. Suitable for use as a textbook or for self-study by professionals, it concentrates on undergraduate-level fundamental concepts and techniques that will enable readers to proceed with building applications on their own. It includes exercises, project descriptions and annotated references to relevant online materials. A Semantic Web Primer is the only available book on the Semantic Web to include a systematic treatment of the different languages (XML, RDF, OWL and rules) and technologies (explicit metadata, ontologies and logic and interference) that are central to Semantic Web development. The book also examines such crucial related topics as ontology engineering and application scenarios. After an introductory chapter, topics covered in succeeding chapters include XML and related technologies that support semantic interoperability; RDF and RDF Schema, the standard data model for machine-processable semantics; and OWL, the W3C-approved standard for a Web ontology language more extensive than RDF Schema; rules, both monotonic and nonmonotonic, in the framework of the Semantic Web; selected application domains and how the Semantic Web would benefit them; the development of ontology-based systems; and current debates on key issues and predictions for the future.

Footnote

The next chapter introduces resource description framework (RDF) and RDF schema (RDFS). Unlike XML, RDF provides a foundation for expressing the semantics of dada: it is a standard dada model for machine-processable semantics. Resource description framework schema offers a number of modeling primitives for organizing RDF vocabularies in typed hierarchies. In addition to RDF and RDFS, a query language for RDF, i.e. RQL. is introduced. This chapter and the next chapter are two of the most important chapters in the book. Chapter 4 presents another language called Web Ontology Language (OWL). Because RDFS is quite primitive as a modeling language for the Web, more powerful languages are needed. A richer language. DAML+OIL, is thus proposed as a joint endeavor of the United States and Europe. OWL takes DAML+OIL as the starting point, and aims to be the standardized and broadly accepted ontology language. At the beginning of the chapter, the nontrivial relation with RDF/RDFS is discussed. Then the authors describe the various language elements of OWL in some detail. Moreover, Appendix A contains an abstract OWL syntax. which compresses OWL and makes OWL much easier to read. Chapter 5 covers both monotonic and nonmonotonic rules. Whereas the previous chapter's mainly concentrate on specializations of knowledge representation, this chapter depicts the foundation of knowledge representation and inference. Two examples are also givwn to explain monotonic and non-monotonic rules, respectively. "To get the most out of the chapter. readers had better gain a thorough understanding of predicate logic first. Chapter 6 presents several realistic application scenarios to which the Semantic Web technology can be applied. including horizontal information products at Elsevier, data integration at Audi, skill finding at Swiss Life, a think tank portal at EnerSearch, e-learning. Web services, multimedia collection indexing, online procurement, raid device interoperability. These case studies give us some real feelings about the Semantic Web.

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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

Rez. in: KO 31(2005), no.4, S.257-258 (B.H. Kwasnik): "According to the author, there have been many books that address the general topic of cataloging and indexing, but relatively few that focus solely an classification. This Compact and clearly written book promises to "redress the balance," and it does. From the outset the author identifies this as a textbook - one that provides theoretical underpinnings, but has as its main goal the provision of "practical advice and the promotion of practical skills" (p. vii). This is a book for the student, or for the practitioner who would like to learn about other applied bibliographic classification systems, and it considers classification as a pragmatic solution to a pragmatic problem: that of organizing materials in a collection. It is not aimed at classification researchers who study the nature of classification per se, nor at those whose primary interest is in classification as a manifestation of human cultural, social, and political values. Having said that, the author's systematic descriptions provide an exceptionally lucid and conceptually grounded description of the prevalent bibliographic classification schemes as they exist, and thus, the book Could serve as a baseline for further comparative analyses or discussions by anyone pursuing such investigations. What makes this book so appealing, even to someone who has immersed herself in this area for many years, as a practicing librarian, a teacher, and a researcher? I especially liked the conceptual framework that supported the detailed descriptions. The author defines and provides examples of the fundamental concepts of notation and the types of classifications, and then develops the notions of conveying order, brevity and simplicity, being memorable, expressiveness, flexibility and hospitality. These basic terms are then used throughout to analyze and comment an the classifications described in the various chapters: DDC, LCC, UDC, and some well-chosen examples of facetted schemes (Colon, Bliss, London Classification of Business Studies, and a hypothetical library of photographs).

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LCSH

Indexing

RSWK

Indexing / Abstracting (GBV)

Subject

Indexing / Abstracting (GBV)
Indexing

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Content

Covers: indexing principles and practice; precoordinate indexes; consistency and quality of indexing; types and functions of abstracts; writing an abstract; evaluation theory and practice; approaches used in indexing and abstracting services; indexing enhancement; natural language in information retrieval; indexing and abstracting of imaginative works; databases of images and sound; automatic indexing and abstracting; the future of indexing and abstracting services

LCSH

Indexing
Indexing / Problems, exercises, etc.

Subject

Indexing
Indexing / Problems, exercises, etc.

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Object

DDC-22

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Abstract

Many information professionals working in small units today fail to find the published tools for subject-based organization that are appropriate to their local needs, whether they are archivists, special librarians, information officers, or knowledge or content managers. Large established standards for document description and organization are too unwieldy, unnecessarily detailed, or too expensive to install and maintain. In other cases the available systems are insufficient for a specialist environment, or don't bring things together in a helpful way. A purpose built, in-house system would seem to be the answer, but too often the skills necessary to create one are lacking. This practical text examines the criteria relevant to the selection of a subject-management system, describes the characteristics of some common types of subject tool, and takes the novice step by step through the process of creating a system for a specialist environment. The methodology employed is a standard technique for the building of a thesaurus that incidentally creates a compatible classification or taxonomy, both of which may be used in a variety of ways for document or information management. Key areas covered are: What is a thesaurus? Tools for subject access and retrieval; what a thesaurus is used for? Why use a thesaurus? Examples of thesauri; the structure of a thesaurus; thesaural relationships; practical thesaurus construction; the vocabulary of the thesaurus; building the systematic structure; conversion to alphabetic format; forms of entry in the thesaurus; maintaining the thesaurus; thesaurus software; and; the wider environment. Essential for the practising information professional, this guide is also valuable for students of library and information science.

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Abstract

A system of library classification that flashed across the inquiring mind of young Melvil Louis Kossuth Dewey (known as Melvil Dewey) in 1873 is still the most popular classification scheme.. The modern library classification begins with Dewey Decimal Classification (DDC). Melvil Dewey devised DDC in 1876. DDC has is credit of 128 years of boudless success. The DDC is being taught as a practical subject throughout the world and it is being used in majority of libraries in about 150 countries. This is the result of continuous revision that 22nd Edition of DDC has been published in July 2003. No other classification scheme has published so many editions. Some welcome changes have been made in DDC 22. To reduce the Christian bias in 200 religion, the numbers 201 to 209 have been devoted to specific aspects of religion. In the previous editions these numbers were devoted to Christianity. to enhance the classifier's efficiency, Table 7 has been removed from DDC 22 and the provision of adding group of persons is made by direct use of notation already available in schedules and in notation -08 from Table 1 Standard Subdivision. The present book is an attempt to explain, with suitable examples, the salient provisions of DDC 22. The book is written in simple language so that the students may not face any difficulty in understanding what is being explained. The examples in the book are explained in a step-by-step procedure. It is hoped that this book will prove of great help and use to the library professionals in general and library and information science students in particular.

Content

1. Introduction to DDC 22 2. Major changes in DDC 22 3. Introduction to the schedules 4. Use of Table 1 : Standard Subdivisions 5. Use of Table 2 : Areas 6. Use of Table 3 : Subdivisions for the arts, for individual literatures, for specific literary forms 7. Use to Table 4 : Subdivisions of individual languages and language families 8. Use of Table 5 : Ethic and National groups 9. Use of Table 6 : Languages 10. Treatment of Groups of Persons

Object

DDC-22

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DDC-22

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Date

10. 9.2004 10:22:40

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Abstract

This book provides a theoretical and practical explanation of the latest advancements in information retrieval and their application to existing systems. It takes a system approach, discussing all aspects of an IR system. The major difference between this book and the first edition is the addition to this text of descriptions of the automated indexing of multimedia dicuments, as items in information retrieval are now considered to be a combination of text along with graphics, audio, image and video data types. The growth of the Internet and the availability of enormous volumes of data in digital form have necessitated intense interest in techniques to assist the user in locating data

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Abstract

Indexing is an activity which often goes unnoticed and can be taken for granted by reades. Indexing.- The Manual of Good Practice covers all aspects of whole document indexing of books, serial publications, images and sound materials. The book gives the purpose and principles of indexing, and covers areas such as managing the work, technology and other subject specialisms. The Manual takes the reader through the basic principles of indexing an to expert approaches, and therefore has a broad appeal for both indexers and prospective indexers whether they work freelance or in-house.

Footnote

Rez. in: nfd - Information Wissenschaft und Praxis 54(2003) H.7, S.440-442 (R. Fugmann): "Das Buch beginnt mit dem Kapitel "Myths about Indexing" und mit der Nennung von weit verbreiteten Irrtümern über das Indexieren, und zwar vorrangig über das Registermachen. Mit einem einzigen Satz ist die Problematik treffend skizziert, welcher das Buch gewidmet ist: "With the development of electronic documents, it has become possible to store very large amounts of information; but storage is not of much use without the capability to retrieve, to convert, transfer and reuse the information". Kritisiert wird die weit verbreitet anzutreffende Ansicht, das Indexieren sei lediglich eine Sache vom "picking out words from the text or naming objects in images and using those words as index headings". Eine solche Arbeitsweise führt jedoch nicht zu Registern, sondern zu Konkordanzen (d.h. zu alphabetischen Fundstellenlisten für Textwörter) und"... is entirely dependent an the words themselves and is not concerned with the ideas behind them". Das Sammeln von Information ist einfach. Aber die (Wieder-) Auffindbarkeit herzustellen muss gelernt werden, wenn mehr ermöglicht werden soll als lediglich das Wiederfinden von Texten, die man in allen Einzelheiten noch genau in Erinnerung behalten hat (known-item searches, questions of recall), die Details der sprachlichen Ausdrucksweise für die gesuchten Begriffe eingeschlossen. Die Verfasserin beschreibt aus ihrer großen praktischen Erfahrung, welche Schritte hierzu auf der gedanklichen und technischen Ebene unternommen werden müssen. Zu den erstgenannten Schritten rechnet die Abtrennung von Details, welche nicht im Index vertreten sein sollten ("unsought terms"), weil sie mit Sicherheit kein Suchziel darstellen werden und als "false friends" zur Überflutung des Suchenden mit Nebensächlichkeiten führen würden, eine Entscheidung, welche nur mit guter Sachkenntnis gefällt werden kann. All Dasjenige hingegen, was in Gegenwart und Zukunft (!) ein sinnvolles Suchziel darstellen könnte und "sufficiently informative" ist, verdient ein Schlagwort im Register. Man lernt auch durch lehrreiche Beispiele, wodurch ein Textwort unbrauchbar für das Register wird, wenn es dort als (schlechtes) Schlagwort erscheint, herausgelöst aus dem interpretierenden Zusammenhang, in welchen es im Text eingebettet gewesen ist. Auch muss die Vieldeutigkeit bereinigt werden, die fast jedem natursprachigen Wort anhaftet. Sonst wird der Suchende beim Nachschlagen allzu oft in die Irre geführt, und zwar um so öfter, je größer ein diesbezüglich unbereinigter Speicher bereits geworden ist.
Der Zugang zum Informationsspeicher ist auch von verwandten Begriffen her zu gewährleisten, denn der Suchende lässt sich gern mit seiner Fragestellung zu allgemeineren und vor allem zu spezifischeren Begriffen leiten. Verweisungen der Art "siehe auch" dienen diesem Zweck. Der Zugang ist auch von unterschiedlichen, aber bedeutungsgleichen Ausdrücken mithilfe einer Verweisung von der Art "siehe" zu gewährleisten, denn ein Fragesteller könnte sich mit einem von diesen Synonymen auf die Suche begeben haben und würde dann nicht fündig werden. Auch wird Vieles, wofür ein Suchender sein Schlagwort parat hat, in einem Text nur in wortreicher Umschreibung und paraphrasiert angetroffen ("Terms that may not appear in the text but are likely to be sought by index users"), d.h. praktisch unauffindbar in einer derartig mannigfaltigen Ausdrucksweise. All dies sollte lexikalisch ausgedrückt werden, und zwar in geläufiger Terminologie, denn in dieser Form erfolgt auch die Fragestellung. Hier wird die Grenze zwischen "concept indexing" gegenüber dem bloßen "word indexing" gezogen, welch letzteres sich mit der Präsentation von nicht interpretierten Textwörtern begnügt. Nicht nur ist eine solche Grenze weit verbreitet unbekannt, ihre Existenz wird zuweilen sogar bestritten, obwohl doch ein Wort meistens viele Begriffe ausdrückt und obwohl ein Begriff meistens durch viele verschiedene Wörter und Sätze ausgedrückt wird. Ein Autor kann und muss sich in seinen Texten oft mit Andeutungen begnügen, weil ein Leser oder Zuhörer das Gemeinte schon aus dem Zusammenhang erkennen kann und nicht mit übergroßer Deutlichkeit (spoon feeding) belästigt sein will, was als Unterstellung von Unkenntnis empfunden würde. Für das Retrieval hingegen muss das Gemeinte explizit ausgedrückt werden. In diesem Buch wird deutlich gemacht, was alles an außertextlichem und Hintergrund-Wissen für ein gutes Indexierungsergebnis aufgeboten werden muss, dies auf der Grundlage von sachverständiger und sorgfältiger Interpretation ("The indexer must understand the meaning of a text"). All dies lässt gutes Indexieren nicht nur als professionelle Dienstleistung erscheinen, sondern auch als Kunst. Als Grundlage für all diese Schritte wird ein Thesaurus empfohlen, mit einem gut strukturierten Netzwerk von verwandtschaftlichen Beziehungen und angepasst an den jeweiligen Buchtext. Aber nur selten wird man auf bereits andernorts vorhandene Thesauri zurückgreifen können. Hier wäre ein Hinweis auf einschlägige Literatur zur Thesaurus-Konstruktion nützlich gewesen.

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Abstract

For its third edition this standard text on knowledge organization and retrieval has been extensively revised and restructured to accommodate the increased significance of electronic information resources. With the help of many new sections on topics such as information retrieval via the Web, metadata and managing information retrieval systems, the book explains principles relating to hybrid print-based and electronic, networked environments experienced by today's users. Part I, Information Basics, explores the nature of information and knowledge and their incorporation into documents. Part II, Records, focuses specifically on electronic databases for accessing print or electronic media. Part III, Access, explores the range of tools for accessing information resources and covers interfaces, indexing and searching languages, classification, thesauri and catalogue and bibliographic access points. Finally, Part IV, Systems, describes the contexts through which knowledge can be organized and retrieved, including OPACs, the Internet, CD-ROMs, online search services and printed indexes and documents. This book is a comprehensive and accessible introduction to knowledge organization for both undergraduate and postgraduate students of information management and information systems

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Source

Password. 2000, H.5, S.22-31

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Date

17. 6.2015 15:22:06

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Abstract

The World Wide Web is rapidly filling with more text than anyone could have imagined even a short time ago, but the task of isolating relevant parts of this vast information has become just that much more daunting. Richard Belew brings a cognitive perspective to the study of information retrieval as a discipline within computer science. He introduces the idea of Finding Out About (FDA) as the process of actively seeking out information relevant to a topic of interest and describes its many facets - ranging from creating a good characterization of what the user seeks, to what documents actually mean, to methods of inferring semantic clues about each document, to the problem of evaluating whether our search engines are performing as we have intended. Finding Out About explains how to build the tools that are useful for searching collections of text and other media. In the process it takes a close look at the properties of textual documents that do not become clear until very large collections of them are brought together and shows that the construction of effective search engines requires knowledge of the statistical and mathematical properties of linguistic phenomena, as well as an appreciation for the cognitive foundation we bring to the task as language users. The unique approach of this book is its even handling of the phenomena of both numbers and words, making it accessible to a wide audience. The textbook is usable in both undergraduate and graduate classes on information retrieval, library science, and computational linguistics. The text is accompanied by a CD-ROM that contains a hypertext version of the book, including additional topics and notes not present in the printed edition. In addition, the CD contains the full text of C.J. "Keith" van Rijsbergen's famous textbook, Information Retrieval (now out of print). Many active links from Belew's to van Rijsbergen's hypertexts help to unite the material. Several test corpora and indexing tools are provided, to support the design of your own search engine. Additional exercises using these corpora and code are available to instructors. Also supporting this book is a Web site that will include recent additions to the book, as well as links to sites of new topics and methods.

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Abstract

Classification is a crucial skill for all information workers involved in organizing collections, but it is a difficult concept to grasp - and is even more difficult to put into practice. Essential Classification offers full guidance an how to go about classifying a document from scratch. This much-needed text leads the novice classifier step by step through the basics of subject cataloguing, with an emphasis an practical document analysis and classification. It deals with fundamental questions of the purpose of classification in different situations, and the needs and expectations of end users. The novice is introduced to the ways in which document content can be assessed, and how this can best be expressed for translation into the language of specific indexing and classification systems. The characteristics of the major general schemes of classification are discussed, together with their suitability for different classification needs.

Footnote

In Chapter 10, "Controlled indexing languages," Professor Broughton states that a classification scheme is truly a language "since it permits communication and the exchange of information" (p. 89), a Statement with which this reviewer wholly agrees. Chapter 11, however, "Word-based approaches to retrieval," moves us to a different field altogether, offering only a narrow view of the whole world of controlled indexing languages such as thesauri, and presenting disconnected discussions of alphabetical filing, form and structure of subject headings, modern developments in alphabetical subject indexing, etc. Chapters 12 and 13 focus an the Library of Congress Subject Headings (LCSH), without even a passing reference to existing subject headings lists in other languages (French RAMEAU, German SWK, etc.). If it is not surprising to see a section on subject headings in a book on classification, the two subjects being taught together in most library schools, the location of this section in the middle of this particular book is more difficult to understand. Chapter 14 brings the reader back to classification, for a discussion of essentials of classification scheme application. The following five chapters present in turn each one of the three major and currently used bibliographic classification schemes, in order of increasing complexity and difficulty of application. The Library of Congress Classification (LCC), the easiest to use, is covered in chapters 15 and 16. The Dewey Decimal Classification (DDC) deserves only a one-chapter treatment (Chapter 17), while the functionalities of the Universal Decimal Classification (UDC), which Professor Broughton knows extremely well, are described in chapters 18 and 19. Chapter 20 is a general discussion of faceted classification, on par with the first seven chapters for its theoretical content. Chapter 21, an interesting last chapter on managing classification, addresses down-to-earth matters such as the cost of classification, the need for re-classification, advantages and disadvantages of using print versions or e-versions of classification schemes, choice of classification scheme, general versus special scheme. But although the questions are interesting, the chapter provides only a very general overview of what appropriate answers might be. To facilitate reading and learning, summaries are strategically located at various places in the text, and always before switching to a related subject. Professor Broughton's choice of examples is always interesting, and sometimes even entertaining (see for example "Inside out: A brief history of underwear" (p. 71)). With many examples, however, and particularly those that appear in the five chapters an classification scheme applications, the novice reader would have benefited from more detailed explanations. On page 221, for example, "The history and social influence of the potato" results in this analysis of concepts: Potato - Sociology, and in the UDC class number: 635.21:316. What happened to the "history" aspect? Some examples are not very convincing: in Animals RT Reproduction and Art RT Reproduction (p. 102), the associative relationship is not appropriate as it is used to distinguish homographs and would do nothing to help either the indexer or the user at the retrieval stage.

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Footnote

Rez. in: KO 50(2003) no.1, S.45-46 (L.M. Given): "In her own preface to this work, the author notes her lifelong fascination with classification and order, as well as her more recent captivation with the Internet - a place of "chaos in need of organization" (xi). Sorting out the Web examines current efforts to organize the Web and is well-informed by the author's academic and professional expertise in information organization, information retrieval, and Web development. Although the book's level and tone are particularly relevant to a student audience (or others interested in Web-based subject access at an introductory level), it will also appeal to information professionals developing subject access systems across a range of information contexts. There are six chapters in the book, each describing and analyzing one core concept related to the organization of Web content. All topics are presented in a manner ideal for newcomers to the area, with clear definitions, examples, and visuals that illustrate the principles under discussion. The first chapter provides a brief introduction to developments in information technology, including an historical overview of information services, users' needs, and libraries' responses to the Internet. Chapter two introduces metadata, including core concepts and metadata formats. Throughout this chapter the author presents a number of figures that aptly illustrate the application of metadata in HTML, SGML, and MARC record environments, and the use of metadata tools (e.g., XML, RDF). Chapter three begins with an overview of classification theory and specific schemes, but the author devotes most of the discussion to the application of classification systems in the Web environment (e.g., Dewey, LCC, UDC). Web screen captures illustrate the use of these schemes for information sources posted to sites around the world. The chapter closes with a discussion of the future of classification; this is a particularly useful section as the author presents a listing of core journal and conference venues where new approaches to Web classification are explored. In chapter four, the author extends the discussion of classification to the use of controlled vocabularies. As in the first few chapters, the author first presents core background material, including reasons to use controlled vocabularies and the differences between preand post-coordinate indexing, and then discusses the application of specific vocabularies in the Web environment (e.g., Infomine's use of LCSH). The final section of the chapter explores failure in subject searching and the limitations of controlled vocabularies for the Web. Chapter five discusses one of the most common and fast-growing topics related to subject access an the Web: search engines. The author presents a clear definition of the term that encompasses classified search lists (e.g., Yahoo) and query-based engines (e.g., Alta Vista). In addition to historical background an the development of search engines, Schwartz also examines search service types, features, results, and system performance.
The chapter concludes with an appendix of search tips that even seasoned searchers will appreciate; these tips cover the complete search process, from preparation to the examination of results. Chapter six is appropriately entitled "Around the Corner," as it provides the reader with a glimpse of the future of subject access for the Web. Text mining, visualization, machine-aided indexing, and other topics are raised here to whet the reader's appetite for what is yet to come. As the author herself notes in these final pages, librarians will likely increase the depth of their collaboration with software engineers, knowledge managers and others outside of the traditional library community, and thereby push the boundaries of subject access for the digital world. This final chapter leaves this reviewer wanting a second volume of the book, one that might explore these additional topics, as they evolve over the coming years. One characteristic of any book that addresses trends related to the Internet is how quickly the text becomes dated. However, as the author herself asserts, there are core principles related to subject analysis that stand the test of time, leaving the reader with a text that may be generalized well beyond the publication date. In this, Schwartz's text is similar to other recent publications (e.g., Jakob Nielsen's Web Usability, also published in 2001) that acknowledge the mutability of the Web, and therefore discuss core principles and issues that may be applied as the medium itself evolves. This approach to the writing makes this a useful book for those teaching in the areas of subject analysis, information retrieval and Web development for possible consideration as a course text. Although the websites used here may need to be supplemented with more current examples in the classroom, the core content of the book will be relevant for many years to come. Although one might expect that any book taking subject access as its focus world, itself, be easy to navigate, this is not always the case. In this text, however, readers will be pleased to find that no small detail in content access has been spared. The subject Index is thorough and well-crafted, and the inclusion of an exhaustive author index is particularly useful for quick reference. In addition, the table of contents includes sub-themes for each chapter, and a complete table of figures is provided. While the use of colour figures world greatly enhance the text, all black-andwhite images are clear and sharp, a notable fact given that most of the figures are screen captures of websites or database entries. In addition, the inclusion of comprehensive reference lists at the close of each chapter makes this a highly readable text for students and instructors alike; each section of the book can stand as its own "expert review" of the topic at hand. In both content and structure this text is highly recommended. It certainly meets its intended goal of providing a timely introduction to the methods and problems of subject access in the Web environment, and does so in a way that is readable, interesting and engaging."

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Date

22. 6.2009 12:46:51

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Series

Materialien zur Information und Dokumentation; Bd.22

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Content

"The contents of the book cover: This book is intended as an introduction to the Dewey Decimal Classification, edition 22. It is not a substitute for it, and I assume that you have it, all four volumes of it, by you while reading the book. I have deliberately included only a short section an WebDewey. This is partly because WebDewey is likely to change more frequently than the printed version, but also because this book is intended to help you use the scheme regardless of the manifestation in which it appears. If you have a subscription to WebDewey and not the printed volumes you may be able to manage with that, but you may then find my references to volumes and page numbers baffling. All the examples and exercises are real; what is not real is the idea that you can classify something without seeing more than the title. However, there is nothing that I can do about this, and I have therefore tried to choose examples whose titles adequately express their subject-matter. Sometimes when you look at the 'answers' you may feel that you have been cheated, but I hope that this will be seldom. Two people deserve special thanks. My colleague Vanda Broughton has read drafts of the book and made many suggestions. Ross Trotter, chair of the CILIP Dewey Decimal Classification Committee, who knows more about Dewey than anyone in Britain today, has commented extensively an it and as far as possible has saved me from error, as well as suggesting many improvements. What errors remain are due to me alone. Thanks are also owed to OCLC Online Computer Library Center, for permission to reproduce some specimen pages of DDC 22. Excerpts from the Dewey Decimal Classification are taken from the Dewey Decimal Classification and Relative Index, Edition 22 which is Copyright 2003 OCLC Online Computer Library Center, Inc. DDC, Dewey, Dewey Decimal Classification and WebDewey are registered trademarks of OCLC Online Computer Library Center, Inc."

Object

DDC-22