Search (25 results, page 1 of 2)

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  1. Graphic details : a scientific study of the importance of diagrams to science (2016) 0.01 
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    Abstract
    A PICTURE is said to be worth a thousand words. That metaphor might be expected to pertain a fortiori in the case of scientific papers, where a figure can brilliantly illuminate an idea that might otherwise be baffling. Papers with figures in them should thus be easier to grasp than those without. They should therefore reach larger audiences and, in turn, be more influential simply by virtue of being more widely read. But are they?
    Content
    Bill Howe and his colleagues at the University of Washington, in Seattle, decided to find out. First, they trained a computer algorithm to distinguish between various sorts of figures-which they defined as diagrams, equations, photographs, plots (such as bar charts and scatter graphs) and tables. They exposed their algorithm to between 400 and 600 images of each of these types of figure until it could distinguish them with an accuracy greater than 90%. Then they set it loose on the more-than-650,000 papers (containing more than 10m figures) stored on PubMed Central, an online archive of biomedical-research articles. To measure each paper's influence, they calculated its article-level Eigenfactor score-a modified version of the PageRank algorithm Google uses to provide the most relevant results for internet searches. Eigenfactor scoring gives a better measure than simply noting the number of times a paper is cited elsewhere, because it weights citations by their influence. A citation in a paper that is itself highly cited is worth more than one in a paper that is not.
    As the team describe in a paper posted (http://arxiv.org/abs/1605.04951) on arXiv, they found that figures did indeed matter-but not all in the same way. An average paper in PubMed Central has about one diagram for every three pages and gets 1.67 citations. Papers with more diagrams per page and, to a lesser extent, plots per page tended to be more influential (on average, a paper accrued two more citations for every extra diagram per page, and one more for every extra plot per page). By contrast, including photographs and equations seemed to decrease the chances of a paper being cited by others. That agrees with a study from 2012, whose authors counted (by hand) the number of mathematical expressions in over 600 biology papers and found that each additional equation per page reduced the number of citations a paper received by 22%. This does not mean that researchers should rush to include more diagrams in their next paper. Dr Howe has not shown what is behind the effect, which may merely be one of correlation, rather than causation. It could, for example, be that papers with lots of diagrams tend to be those that illustrate new concepts, and thus start a whole new field of inquiry. Such papers will certainly be cited a lot. On the other hand, the presence of equations really might reduce citations. Biologists (as are most of those who write and read the papers in PubMed Central) are notoriously mathsaverse. If that is the case, looking in a physics archive would probably produce a different result.
    Dr Howe and his colleagues do, however, believe that the study of diagrams can result in new insights. A figure showing new metabolic pathways in a cell, for example, may summarise hundreds of experiments. Since illustrations can convey important scientific concepts in this way, they think that browsing through related figures from different papers may help researchers come up with new theories. As Dr Howe puts it, "the unit of scientific currency is closer to the figure than to the paper." With this thought in mind, the team have created a website (viziometrics.org (http://viziometrics.org/) ) where the millions of images sorted by their program can be searched using key words. Their next plan is to extract the information from particular types of scientific figure, to create comprehensive "super" figures: a giant network of all the known chemical processes in a cell for example, or the best-available tree of life. At just one such superfigure per paper, though, the citation records of articles containing such all-embracing diagrams may very well undermine the correlation that prompted their creation in the first place. Call it the ultimate marriage of chart and science.
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  2. Kuhlen, R.: Informationelle Bildung - Informationelle Kompetenz - Informationelle Autonomie (2000) 0.01 
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  3. D'Harcourt, J.-C.: Integrating documentation into the company information system with SGML (1995) 0.01 
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    Abstract
    Increased competition has forced many industries to cut production costs, to reduce the time needed to bring products to market, and to better satisfy customer needs. Furthermore, the internationalization of business has caused an enormous increase in the need for communication and information exchange. Describes how SGML, when considered as an integral part of company's information system, can help meet these challenges and in so doing provide competitive advantage
    Language
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    Source
    Managing information. 2(1995) no.3, S.25-27
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  4. Yi, K.: Challenges in automated classification using library classification schemes (2006) 0.01 
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    Abstract
    A major library classification scheme has long been standard classification framework for information sources in traditional library environment, and text classification (TC) becomes a popular and attractive tool of organizing digital information. This paper gives an overview of previous projects and studies on TC using major library classification schemes, and summarizes a discussion of TC research challenges.
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  5. Weckend, E.: Anwenders Ideal : Forderungen der entstehenden Information Community (1995) 0.01 
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  6. Kim, K.-S.; Kim, S.-C.J.; Park, S.-J.; Zhu, X.; Polparsi, J.: Facet analyses of categories used in Web directories : a comparative study (2006) 0.01 
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    Abstract
    Faceted classification is believed to be suitable for organizing digital information resources. Based on a faceted classification model suggested for Web resources (Zins, 2002), the current study analyzed popular Web directories from different Asian countries/areas and examined cultural differences reflected in their classification systems. Three popular Web directories from four countries/regions (China, Hong Kong, Korea, and Thailand) were selected and their classifications were analyzed and compared: a local Yahoo and two home-grown Web directories from each country/region. Based on the findings, the study suggests a model that might be more suitable to Asian culture.
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  7. Leuenberger, M.; Stettler, N.; Grossmann, S.; Herget, J.: Combining different access options for image databases (2006) 0.00 
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    Abstract
    Living Memory is an interdisciplinary project running for two years, which is realised in cooperation of several institutions. It aims at developing an information system for a digital collection of different types of visual resources and will combine classical methods of image indexing and retrieval with innovative approaches like content-based image retrieval and the use of topic maps for semantic searching and browsing. This work-in-progress-report outlines the aims of the project and present first results after the period of fifteen months.
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  8. McCallum, S.H.: ¬A look at new information retrieval protocols : SRU, OpenSearch/A9, CQL, and XQuery (2006) 0.00 
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    Abstract
    Libraries have a large stake in search protocols because library systems are diverse yet library users need to access multiple sites without learning the search syntax of each site. This paper reviews and compares the relative advantages of several of the newest search protocols and query languages: Search via URL (SRU), OpenSearch, Contextual Query Language (CQL), and XQuery. The models for SRU and OpenSearch operations are described in order to explain differences in functionality - keyword search and simple data record return for OpenSearch and richer search with multiple format data return for SRU. The advantages of CQL are described along with possible complementary uses of the highly detailed and complex XQuery being developed for XML.
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    a
  9. Patton, G.; Hengel-Dittrich, C.; O'Neill, E.T.; Tillett, B.B.: VIAF (Virtual International Authority File) : Linking Die Deutsche Bibliothek and Library of Congress Name Authority Files (2006) 0.00 
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    Abstract
    Die Deutsche Bibliothek, the Library of Congress, and OCLC Online Computer Library Center are jointly developing a virtual international authority file (VIAF) for personal names which links authority records from the world's national bibliographic agencies and will be made freely available on the Web. The goals of the project are to prove the viability of automatically linking authority records from different national authority files and to demonstrate its benefits. The authority and bibliographic files from the Library of Congress and Die Deutsche Bibliothek were used to create the initial VIAF which contains over six million names with over a half million links. A key aspect of the project was the development of automated name matching algorithms which use information from both authority records and the corresponding bibliographic records. The practicality of algorithmically linking the personal names between national authority files was demonstrated; seventy percent of the authority records for personal names common to both files were automatically linked with an error rate of less than one percent. The long-term goal of the VIAF project is to combine the authoritative names from many national libraries and other significant sources into a shared global authority service.
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  10. Danskin, A.: "Tomorrow never knows" : the end of cataloguing? (2006) 0.00 
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    Abstract
    This paper reviews the perceived threats to the future of cataloguing posed by the increasing volume of publications in all media, coupled with a resource base which is declining in real terms. It argues that cataloguing is more rather than less important in such an environment and considers some of the ways in which cataloguing will have to change in order to survive.
    The purpose of this paper is to review the challenges confronting cataloguing as we have known it and to consider how these challenges might be confronted and whether they may be surmounted. The main focus of this paper is on cataloguing rather than the catalogue, although it is obviously difficult to separate one from the other. First of all, what does "cataloguing" mean? For the purposes of this paper I have adopted a broad definition incorporating the following activities: - description of the resource sufficient for purposes of identification and for differentiation from other similar resources - identification and control of access points - identification and control of relationships with other resources - subject analysis of the resource - assignment of subject indexing terms - assignment of classification numbers The challenges facing cataloguing are all too well known. In no particular order, the major challenges are: - Increasing inputs - New kinds of information resource - Competition from other mediation services. - Perception that cataloguing is high cost and offers poor value for money. - Fiscal constraints - Declining workforce This is a daunting list. We have a choice, we could, to paraphrase John Lennon, "Turn off our minds, relax and float down stream", until we retire, take voluntary redundancy, or retrain as marketing consultants; or, we can choose to confront these challenges and consider what they really mean for cataloguing.
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  11. Langford, D.: Evaluating a hypertext document (1993) 0.00 
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    Abstract
    Drawing on practical, academic and commercial experience, this paper addresses some of the ways in which a hypertext document may be effectively evaluated
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  12. Mackay, R.: Fachinformationspolitik : Europa (1995) 0.00 
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  13. Brehde, D.: Nachschlag erwünscht : wie ein deutscher Wörterbuchschatz auf die CD-ROM kam (1995) 0.00 
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  14. Kellsey, C.: Cataloging with Bibliofile : alternative to the bibliographic utilities for small college libraries (1998) 0.00 
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    Abstract
    Bibliofile is a CD-ROM cataloguing product that provides LC MARC records. Available databases include English only, foreign language materials, audio-visual materials, as well as several that are more specialized. Bibliofile runs on a PC that may be connected to a network. Advantages over an online utility include lower cost, no telecommunication problems, no slow response times, fixed subscription rates with no hourly use charges, easy installation, searching and editing and good phone support. Disadvantages include no member-contributed records and no member holdings to use for interlibrary loan. A library should consider type and level of materials catalogued, existence of an interface with a local OPAC, total cataloguing time used, and other sources for ILL searching when considering bibliofile as a cataloguing alternative
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  15. Bredack, J.: Terminologieextraktion von Mehrwortgruppen in kunsthistorischen Fachtexten (2013) 0.00 
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    Abstract
    Mit Hilfe eines algorithmisch arbeitenden Verfahrens können Mehrwortgruppen aus elektronisch vorliegenden Texten identifiziert und extrahiert werden. Als Datengrundlage für diese Arbeit dienen kunsthistorische Lexikonartikel des Reallexikons zur Deutschen Kunstgeschichte. Die linguistisch, wörterbuchbasierte Open-Source-Software Lingo wurde in dieser Studie genutzt. Mit Lingo ist es möglich, auf Basis erstellter Wortmuster, bestimmte Wortfolgen aus elektronisch vorliegenden Daten algorithmisch zu identifizieren und zu extrahieren. Die erstellten Wortmuster basieren auf Wortklassen, mit denen die lexikalisierten Einträge in den Wörterbüchern getaggt sind und dadurch näher definiert werden. So wurden individuelle Wortklassen für Fachterminologie, Eigennamen, oder Adjektive vergeben. In der vorliegenden Arbeit werden zusätzlich Funktionswörter in die Musterbildung mit einbezogen. Dafür wurden neue Wortklassen definiert. Funktionswörter bestimmen Artikel, Konjunktionen und Präpositionen. Ziel war es fachterminologische Mehrwortgruppen mit kunsthistorischen Inhalten zu extrahieren unter der gezielten Einbindung von Funktionswörtern. Anhand selbst gebildeter Kriterien, wurden die extrahierten Mehrwortgruppen qualitativ analysiert. Es konnte festgestellt werden, dass die Verwendung von Funktionswörtern fachterminologische Mehrwortgruppen erzeugt, die als potentielle Indexterme weitere Verwendung im Information Retrieval finden können.
    Mehrwortgruppen sind als lexikalische Einheit zu betrachten und bestehen aus mindestens zwei miteinander in Verbindung stehenden Begriffen. Durch die Ver-bindung mehrerer Fachwörter transportieren sie in Fachtexten aussagekräftige Informationen. Sie vermitteln eindeutige Informationen, da aus den resultierenden Beziehungen zwischen den in Verbindung stehenden Fachbegriffen die inhaltliche Bedeutung eines Fachtextes ersichtlich wird. Demzufolge ist es sinnvoll, Mehrwort-gruppen aus Fachtexten zu extrahieren, da diese die Inhalte eindeutig repräsentieren. So können Mehrwortgruppen für eine inhaltliche Erschließung genutzt und beispiels-weise als Indexterme im Information Retrieval bereitgestellt werden. Mehrwortgruppen enthalten Informationen eines Textes, die in natürlicher Sprache vorliegen. Zur Extraktion von Informationen eines elektronisch vorliegenden Textes kommen maschinelle Verfahren zum Einsatz, da Sprache Strukturen aufweist, die maschinell verarbeitet werden können. Eine mögliche Methode Mehrwortgruppen innerhalb von elektronisch vorliegenden Fachtexten zu identifizieren und extrahieren ist ein algorithmisches Verfahren. Diese Methode erkennt Wortfolgen durch das Bilden von Wortmustern, aus denen sich eine Mehrwortgruppe in einem Text zusammensetzt. Die Wortmuster repräsentieren somit die einzelnen Bestandteile einer Mehrwortgruppe. Bereits an mathematischen Fachtexten wurde dieses Verfahren untersucht und analysiert. Relevante Mehrwortgruppen, die ein mathematisches Konzept oder mathe-matischen Inhalt repräsentierten, konnten erfolgreich extrahiert werden. Zum Einsatz kam das Indexierungssystem Lingo, mit dessen Programmodul sequencer eine algorithmische Identifizierung und Extraktion von Mehrwortgruppen möglich ist. In der vorliegenden Arbeit wird dieses algorithmische Verfahren unter Einsatz der Software Lingo genutzt, um Mehrwortgruppen aus kunsthistorischen Fachtexten zu extrahieren. Als Datenquelle dienen kunsthistorische Lexikonartikel aus dem Reallexikon zur Deutschen Kunstgeschichte, welches in deutscher Sprache vorliegt. Es wird untersucht, ob positive Ergebnisse im Sinne von fachterminologischen Mehrwort-gruppen mit kunsthistorischen Inhalten erzeugt werden können. Dabei soll zusätzlich die Einbindung von Funktionswörtern innerhalb einer Mehrwortgruppe erfolgen. Funktionswörter definieren Artikel, Konjunktionen und Präpositionen, die für sich alleinstehend keine inhaltstragende Bedeutung besitzen, allerdings innerhalb einer Mehrwortgruppe syntaktische Funktionen erfüllen. Anhand der daraus resultierenden Ergebnisse wird analysiert, ob das Hinzufügen von Funktionswörtern innerhalb einer Mehrwortgruppe zu positiven Ergebnissen führt. Ziel soll es demnach sein, fach-terminologische Mehrwortgruppen mit kunsthistorischen Inhalten zu erzeugen, unter Einbindung von Funktionswörtern. Bei der Extraktion fachterminologischer Mehrwortgruppen wird im Folgenden insbesondere auf die Erstellung von Wortmustern eingegangen, da diese die Basis liefern, mit welchen das Programmmodul sequencer Wortfolgen innerhalb der kunst-historischen Lexikonartikel identifiziert. Eine Einordung der Indexierungsergebnisse erfolgt anhand selbst gebildeter Kriterien, die definieren, was unter einer fach-terminologischen Mehrwortgruppe zu verstehen ist.
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  16. Benediktsson, D.: Problems of subject access to Icelandic collections throughout OPACs (1990) 0.00 
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    Abstract
    Suggest reasons why there is no operational OPAC station yet in Iceland. Obstacles include the lack of compatability among computer systems adopted by the major libraries, the differing classification schemes used by them and the lack of a controlled indexing vocabulary or thesaurus for subject analysis in the Icelandic language. The Rejkjavik Municipal Library and the National Hospital Library, both users of the DOBIS/LIBIS system, will be the first users of a potential network of OPACs.
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  17. Burkhardt, F.W.: Quo vadis, Informationsgesellschaft? (1995) 0.00 
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  18. Koh, G.S.L.: Transferring intended messages of subject headings exemplified in the list of Korean subject headings (2006) 0.00 
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    Abstract
    This paper focuses on meaning as the core concern and challenge of interoperability in a multilingual context. Korean subject headings, presently translated from English, crystallize issues attached to the semantics of translation in at least two languages (Korean, with written Chinese, and English). Presenting a model microcosm, which explains grammatical and semantic characteristics, and allows a search for equivalence of headings that have the closest approximation of semantic ranges, the study concludes the necessary conditions for linking multilingual subject headings and suggests an interoperable model for the transfer of meaning of headings across languages and cultures.
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  19. Shah, L.; Kumar, S.: Uniform form divisions (common isolates) for digital environment : a proposal (2006) 0.00 
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    Abstract
    The study has proposed unification of three major schemes DDC, UDC and CC and developed uniform table for Form Divisions (Common Isolates), which can be used by any of the schemes of library classification or by a uniform classification scheme devised for digital environment. Paper suggests new postulation for the arrangement of geographical divisions. The paper also suggests for further research to prepare uniform classification code, which can be applied in digital environment. Concludes that IFLA may undertake a uniform classification code projects and its application in electronic environment.
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  20. Cathro, W.: New frameworks for resource discovery and delivery : the changing role of the catalogue (2006) 0.00 
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    Abstract
    There is currently a lively debate about the role of the library catalogue and its relationship to other resource discovery tools. An example of this debate is the recent publication of a report commissioned by the Library of Congress on "the changing nature of the catalogue" As part of this debate, the role of union catalogues is also being re-examined. Some commentators have suggested that union catalogues, by virtue of their size, can aggregate both supply and demand, thus increasing the chance that a relatively little-used resource will be discovered by somebody for whom it is relevant. During the past year, the National Library of Australia (NLA) has been considering the future of its catalogue and its role in the resource discovery and delivery process. The review was prompted, in part, by the redevelopment of the Australian union catalogue and its exposure on the web as a free public service, badged as Libraries Australia. The NLA examined the enablers and inhibitors to proposition "that it replace its catalogue with Libraries Australia, as the primary database to be searched by users". Flowing from this review, the NLA is aiming to undertake a number of tasks to move in the medium to long term towards a scenario in which it could deprecate its local catalogue. Bezug zum Calhoun-Report
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