Search (50 results, page 1 of 3)

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Abstract

Das Screen-Design-Handbuch gibt Gestaltern interaktiver Medien eine praktische Arbeitshilfe an die Hand, um Informationen zielgruppen- und mediengerecht aufzubereiten und darzustellen. Es zeigt Hintergründe und Zusammenhänge auf, verdeutlicht diese anhand von Beispielen und regt dazu an, die Sprache der digitalen Medien weiter zu entwickeln. Grundlagen der Wahrnehmungs- und Lernpsychologie, der Ergonomie, der Kommunikationstheorie, der Imagery-Forschung und der Ästhethik werden dabei ebenso berücksichtigt wie Fragen der Gestaltung von Navigations- und Orientierungselementen. Die Neuauflage enthält mehr Beispiele und Checklisten sowie neue Kapitel über Wahrnehmung, Web-Nutzung und Projektmanagement

Date

22. 3.2008 14:35:21

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Classification

ST 253 Informatik / Monographien / Software und -entwicklung / Web-Programmierwerkzeuge (A-Z)

Date

22. 3.2008 14:29:25

RVK

ST 253 Informatik / Monographien / Software und -entwicklung / Web-Programmierwerkzeuge (A-Z)

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Abstract

Studies on the state and structure of digital knowledge concerning science generally relate to macro and meso scales. Supported by visualizations, these studies can deliver knowledge about emerging scientific fields or collaboration between countries, scientific centers, or groups of researchers. Analyses of individual activities or single scientific career paths are rarely presented and discussed. The authors decided to fill this gap and developed a web application for visualizing the scientific output of particular researchers. This free software based on bibliographic data from local databases, provides six layouts for analysis. Researchers can see the dynamic characteristics of their own writing activity, the time and place of publication, and the thematic scope of research problems. They can also identify cooperation networks, and consequently, study the dependencies and regularities in their own scientific activity. The current article presents the results of a study of the application's usability and functionality as well as attempts to define different user groups. A survey about the interface was sent to select researchers employed at Nicolaus Copernicus University. The results were used to answer the question as to whether such a specialized visualization tool can significantly augment the individual information space of the contemporary researcher.

Date

21.12.2018 17:22:13

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Abstract

The Library of Congress Subject Headings (LCSH) has been developed over the course of more than a century, predating the semantic web by some time. Until the 1986, the only concept-toconcept relationship available was an undifferentiated "See Also" reference, which was used for both associative (RT) and hierarchical (BT/NT) connections. In that year, in preparation for the first release of the headings in machine readable MARC Authorities form, an attempt was made to automatically convert these "See Also" links into the standardized thesaural relations. Unfortunately, the rule used to determine the type of reference to generate relied on the presence of symmetric links to detect associatively related terms; "See Also" references that were only present in one of the related terms were assumed to be hierarchical. This left the process vulnerable to inconsistent use of references in the pre-conversion data, with a marked bias towards promoting relationships to hierarchical status. The Library of Congress was aware that the results of the conversion contained many inconsistencies, and intended to validate and correct the results over the course of time. Unfortunately, twenty years later, less than 40% of the converted records have been evaluated. The converted records, being the earliest encountered during the Library's cataloging activities, represent the most basic concepts within LCSH; errors in the syndetic structure for these records affect far more subordinate concepts than those nearer the periphery. Worse, a policy of patterning new headings after pre-existing ones leads to structural errors arising from the conversion process being replicated in these newer headings, perpetuating and exacerbating the errors. As the LCSH prepares for its second great conversion, from MARC to SKOS, it is critical to address these structural problems. As part of the work on converting the headings into SKOS, I have experimented with different visualizations of the tangled web of broader terms embedded in LCSH. This poster illustrates several of these renderings, shows how they can help users to judge which relationships might not be correct, and shows just exactly how Doorbells and Mammals are related.

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

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Abstract

Wer wird als erster die Vision des "Semantic Web" zur Realität machen? Vielleicht diejenigen Semantic Web Forschenden, die sich auf Knowledge Visualization konzentrieren. Dieser Artikel vermittelt einen ordnenden Überblick über das Thema Visualisierung für Semantic Web Forschende und beschreibt die wichtigen Perspektiven des optimalen Wissenstransfers. Der Artikel beschreibt die Vorteile von Visualisierungen und die Forschungsrichtungen, die für Semantic Web Forschende wichtig sind. Schließlich werden aktuelle Beispiele aus der Praxis, in denen das Nutzen, Finden oder Transferieren von Information eine Herausforderung war, beschrieben. Der Artikel vermittelt Praktikern in Firmen Lösungsansätze und zeigt Semantic Web Forschenden einen neuen Forschungsschwerpunkt, der nach der Etablierung von technischen Standards wichtig werden wird: Knowledge Visualization.

Source

Semantic Web: Wege zur vernetzten Wissensgesellschaft. Hrsg.: T. Pellegrini, u. A. Blumauer

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Abstract

With the terrific growth of data volume and data being produced every second on millions of devices across the globe, there is a desperate need to manage the unstructured data available on web pages efficiently. Semantic Web or also known as Web of Trust structures the scattered data on the Internet according to the needs of the user. It is an extension of the World Wide Web (WWW) which focuses on manipulating web data on behalf of Humans. Due to the ability of the Semantic Web to integrate data from disparate sources and hence makes it more user-friendly, it is an emerging trend. Tim Berners-Lee first introduced the term Semantic Web and since then it has come a long way to become a more intelligent and intuitive web. Data Visualization plays an essential role in explaining complex concepts in a universal manner through pictorial representation, and the Semantic Web helps in broadening the potential of Data Visualization and thus making it an appropriate combination. The objective of this chapter is to provide fundamental insights concerning the semantic web technologies and in addition to that it also elucidates the issues as well as the solutions regarding the semantic web. The purpose of this chapter is to highlight the semantic web architecture in detail while also comparing it with the traditional search system. It classifies the semantic web architecture into three major pillars i.e. RDF, Ontology, and XML. Moreover, it describes different semantic web tools used in the framework and technology. It attempts to illustrate different approaches of the semantic web search engines. Besides stating numerous challenges faced by the semantic web it also illustrates the solutions.

Theme

Semantic Web

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Object

Web 2.0

Source

Social Semantic Web: Web 2.0, was nun? Hrsg.: A. Blumauer u. T. Pellegrini

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Abstract

Der Anreiz und das Potential von Informationsvisualisierungen wird bereits häufig erkannt und der Wunsch nach deren Anwendung immer stärker. Gerade im Bereich des Wissensmanagements spielt dieses Gebiet eine immer wichtigere Rolle. Diese Arbeit beschäftigt sich mit Informationsvisualisierung im Semantic Web und vermittelt einen Überblick über aktuelle Entwicklungen zum Thema Knowledge Visualization. Zun¨achst werden grundlegende Konzepte der Informationsvisualisierung vorgestellt und deren Bedeutung in Hinblick auf das Wissensmanagement erklärt. Aus den Anforderungen, die das Semantic Web an die Informationsvisualisierungen stellt, lassen sich Kriterien ableiten, die zur Beurteilung von Visualisierungstechniken herangezogen werden können. Die ausgewählten Kriterien werden im Rahmen dieser Arbeit zu einem Kriterienkatalog zusammengefasst. Schließlich werden ausgewählte Werkzeuge beschrieben, die im Wissensmanagement bereits erfolgreich Anwendung finden. Die einzelnen Untersuchungsobjekte werden nach einer detailierten Beschreibung anhand der ausgewählten Kriterien analysiert und bewertet. Dabei wird besonders auf deren Anwendung im Kontext des Semantic Web eingegangen.

Source

Eine Analyse bestehender Visualisierungstechniken im Hinblick auf Eignung für das Semantic Web

Theme

Semantic Web

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Abstract

Das Themengebiet der Arbeit behandelt Visualisierungen von typisierten Links in Linked Data. Die wissenschaftlichen Gebiete, die im Allgemeinen den Inhalt des Beitrags abgrenzen, sind das Semantic Web, das Web of Data und Informationsvisualisierung. Das Semantic Web, das von Tim Berners Lee 2001 erfunden wurde, stellt eine Erweiterung zum World Wide Web (Web 2.0) dar. Aktuelle Forschungen beziehen sich auf die Verknüpfbarkeit von Informationen im World Wide Web. Um es zu ermöglichen, solche Verbindungen wahrnehmen und verarbeiten zu können sind Visualisierungen die wichtigsten Anforderungen als Hauptteil der Datenverarbeitung. Im Zusammenhang mit dem Sematic Web werden Repräsentationen von zusammenhängenden Informationen anhand von Graphen gehandhabt. Der Grund des Entstehens dieser Arbeit ist in erster Linie die Beschreibung der Gestaltung von Linked Data-Visualisierungskonzepten, deren Prinzipien im Rahmen einer theoretischen Annäherung eingeführt werden. Anhand des Kontexts führt eine schrittweise Erweiterung der Informationen mit dem Ziel, praktische Richtlinien anzubieten, zur Vernetzung dieser ausgearbeiteten Gestaltungsrichtlinien. Indem die Entwürfe zweier alternativer Visualisierungen einer standardisierten Webapplikation beschrieben werden, die Linked Data als Netzwerk visualisiert, konnte ein Test durchgeführt werden, der deren Kompatibilität zum Inhalt hatte. Der praktische Teil behandelt daher die Designphase, die Resultate, und zukünftige Anforderungen des Projektes, die durch die Testung ausgearbeitet wurden.

Theme

Semantic Web

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Abstract

Although information retrieval techniques used by Web search engines have improved substantially over the years, the results of Web searches have continued to be represented in simple list-based formats. Although the list-based representation makes it easy to evaluate a single document for relevance, it does not support the users in the broader tasks of manipulating or exploring the search results as they attempt to find a collection of relevant documents. HotMap is a meta-search system that provides a compact visual representation of Web search results at two levels of detail, and it supports interactive exploration via nested sorting of Web search results based on query term frequencies. An evaluation of the search results for a set of vague queries has shown that the re-sorted search results can provide a higher portion of relevant documents among the top search results. User studies show an increase in speed and effectiveness and a reduction in missed documents when comparing HotMap to the list-based representation used by Google. Subjective measures were positive, and users showed a preference for the HotMap interface. These results provide evidence for the utility of next-generation Web search results interfaces that promote interactive search results exploration.

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Abstract

This study explores the navigation behaviour of all users of a large web service, Renardus, using web log analysis. Renardus provides integrated searching and browsing access to quality-controlled web resources from major individual subject gateway services. The main navigation feature is subject browsing through the Dewey Decimal Classification (DDC) based on mapping of classes of resources from the distributed gateways to the DDC structure. Among the more surprising results are the hugely dominant share of browsing activities, the good use of browsing support features like the graphical fish-eye overviews, rather long and varied navigation sequences, as well as extensive hierarchical directory-style browsing through the large DDC system.

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Theme

Semantic Web

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Date

30. 5.2010 16:22:35

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Date

1. 2.2016 18:25:22

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Content

"Die Stadtbibliothek Reutlingen (www.stadtbibliothek-reutlingen.de) hat ihren gesamten Internetauftritt auf den Web-Opac Premium von BOND umgerüstet. Der WebOpac Premium ist weit mehr als ein gewöhnlicher Web-Opac. Vielmehr ist er ein Internet-Por-tal, in dessen Struktur alle Informationen und Angebote der Stadtbibliothek integriert sind. Mit dem Web-Opac Premium konnte die Bibliothek bei der Neugestaltung ihrer Internetseiten auf ein bestehendes und flexibel anpassbares Produkt zurückgreifen, um so Zeit und Arbeit zu sparen. Bestehende HTML-Seiten der alten Homepage wurden einfach in die neue Website übernommen. Zudem erhöhen viele Zusatzfunktionen des Web-Opac Premium die Attraktivität der Bibliothek. Neu ist auch die »Assoziative Suche« (Spider Search), mit der die Bibliotheksbenutzer bei der Mediensuche neue Sinnzusammenhänge erschließen und so ihre Suchergebnisse verbessern können. Für die übersichtliche Gliederung der Website sorgen die horizontale Navigationsleiste nach Abteilungen und Zweigstellen der Stadtbibliothek sowie ein blaues Navigationselement im linken Frame, das sich mit sprechenden Begriffen an alle Benutzer und bestimmte Zielgruppen der Bibliothek wendet. Unter dem Stichwort »Suche« können Leser sowohl nach Inhalten auf der Website als auch über drei Wege nach Medien suchen: über den Web-Opac der Stadtbibliothek, die Assoziative Mediensuche im Katalog der Bibliothek und in regionalen Katalogen, wie denen der Bibliothek der Fachhochschule Reutlingen, der UB oder der Stadtbücherei Tübingen. Der Bereich »Service« bietet viele Informationen zur Bibliothek und deren Benutzung. Unter »Meine Bibliothek« kann der Leser nach der Anmeldung sein Benutzerkonto einsehen, die Leihfrist der entliehenen Medien verlängern und sich sein persönliches Interessenprofil abspeichern. Das heißt der Leser legt gewünschte Stichwörter, Verfasser, Mediengruppen oder Interessenkreise fest und wird regelmäßig zu seinen Wunschthemen informiert. Der Bereich »Veranstaltungen« informiert über die aktuellen Veranstaltungen, untergliedert nach Kinderbibliothek, Hauptstelle und Zweigstellen. Das eingesetzte Veranstaltungsmodul des Web-Opacs Premium übernimmt die automatisierte Aktualisierung der angezeigten Veranstaltungen durch Angabe von Start- und Ablaufdatum."

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Abstract

Children seek information in order to complete school projects on a wide variety of topics, as well as to support their various leisure activities. Such information can be found in print documents, but increasingly young people are turning to the Web to meet their information needs. In order to exploit this resource, however, children must be able to search or browse digital information through the intermediation of an interface. In particular, they must use Web-based portals that in most cases have been designed for adult users. Guidelines for interface design are not hard to find, but typically they also postulate adult rather than juvenile users. The authors discuss their own research work that has focused upon what young people themselves have to say about the design of portal interfaces. They conclude that specific interface design guidelines are required for young users rather than simply relying upon general design guidelines, and that in order to formulate such guidelines it is necessary to actively include the young people themselves in this process.

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Date

22. 1.2017 16:54:03
22. 1.2017 17:10:56

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Abstract

This book outlines the human side of the information seeking process, and focuses on the aspects of this process that can best be supported by the user interface. It describes the methods behind user interface design generally, and search interface design in particular, with an emphasis on how best to evaluate search interfaces. It discusses research results and current practices surrounding user interfaces for query specification, display of retrieval results, grouping retrieval results, navigation of information collections, query reformulation, search personalization, and the broader tasks of sensemaking and text analysis. Much of the discussion pertains to Web search engines, but the book also covers the special considerations surrounding search of other information collections.

LCSH

Web search engines

RSWK

World Wide Web / Information Retrieval / Mensch-Maschine-Kommunikation / Benutzerorientierung (HBZ)

Subject

World Wide Web / Information Retrieval / Mensch-Maschine-Kommunikation / Benutzerorientierung (HBZ)
Web search engines

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Date

30. 1.2007 18:22:41

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Abstract

Purpose - The purpose of this paper is to report an investigation into the ways in which Canadian digital library collections have incorporated knowledge organization systems into their search interfaces. Design/methodology/approach - A combination of data-gathering techniques was used. These were as follows: a review of the literature related to the application of knowledge organization systems, deep scanning of Canadian governmental and academic institutions web sites on the web, identify and contact researchers in the area of knowledge organization, and identify and contact people in the governmental organizations who are involved in knowledge organization and information management. Findings - A total of 33 digital collections were identified that have made use of some type of knowledge organization system. Thesauri, subject heading lists and classification schemes were the widely used knowledge organization systems in the surveyed Canadian digital library collections. Research limitations/implications - The target population for this research was limited to governmental and academic digital library collections. Practical implications - An evaluation of the knowledge organization systems interfaces showed that searching, browsing and navigation facilities as well as bilingual features call for improvements. Originality/value - This research contributes to the following areas: digital libraries, knowledge organization systems and services and search interface design.