14,301 research outputs found
Generating collaborative systems for digital libraries: A model-driven approach
This is an open access article shared under a Creative Commons Attribution 3.0 Licence (http://creativecommons.org/licenses/by/3.0/). Copyright @ 2010 The Authors.The design and development of a digital library involves different stakeholders, such as: information architects, librarians, and domain experts, who need to agree on a common language to describe, discuss, and negotiate the services the library has to offer. To this end, high-level, language-neutral models have to be devised. Metamodeling techniques favor the definition of domainspecific visual languages through which stakeholders can share their views and directly manipulate representations of the domain entities. This paper describes CRADLE (Cooperative-Relational Approach to Digital Library Environments), a metamodel-based framework and visual language for the definition of notions and services related to the development of digital libraries. A collection of tools allows the automatic generation of several services, defined with the CRADLE visual language, and of the graphical user interfaces providing access to them for the final user. The effectiveness of the approach is illustrated by presenting digital libraries generated with CRADLE, while the CRADLE environment has been evaluated by using the cognitive dimensions framework
Assessing Visualization Techniques for the Search Process in Digital Libraries
In this paper we present an overview of several visualization techniques to
support the search process in Digital Libraries (DLs). The search process
typically can be separated into three major phases: query formulation and
refinement, browsing through result lists and viewing and interacting with
documents and their properties. We discuss a selection of popular visualization
techniques that have been developed for the different phases to support the
user during the search process. Along prototypes based on the different
techniques we show how the approaches have been implemented. Although various
visualizations have been developed in prototypical systems very few of these
approaches have been adapted into today's DLs. We conclude that this is most
likely due to the fact that most systems are not evaluated intensely in
real-life scenarios with real information seekers and that results of the
interesting visualization techniques are often not comparable. We can say that
many of the assessed systems did not properly address the information need of
cur-rent users.Comment: 23 pages, 14 figures, pre-print to appear in "Wissensorganisation mit
digitalen Technologien" (deGruyter
Is Evaluating Visual Search Interfaces in Digital Libraries Still an Issue?
Although various visual interfaces for digital libraries have been developed
in prototypical systems, very few of these visual approaches have been
integrated into today's digital libraries. In this position paper we argue that
this is most likely due to the fact that the evaluation results of most visual
systems lack comparability. There is no fix standard on how to evaluate visual
interactive user interfaces. Therefore it is not possible to identify which
approach is more suitable for a certain context. We feel that the comparability
of evaluation results could be improved by building a common evaluation setup
consisting of a reference system, based on a standardized corpus with fixed
tasks and a panel for possible participants.Comment: 10 pages, 2 figures, LWA Workshop 201
A cooperative-relational approach to digital libraries
Copyright @ 2007 Springer-Verlag, Berlin HeidelbergThis paper presents a novel approach to model-driven development of Digital Library (DL) systems. The overall idea is to allow Digital Library systems designers (e.g. information architects, librarians, domain experts) to easily design such systems by using a visual language. We designed a Domain Specific Visual Language for such a purpose and developed a framework supporting it; this framework helps designers by automatically generating code for the defined Digital Library system, so that they do not have to get involved into technical issues concerning its deployment. In our approach, both Human-Computer Interaction and Computer Supported Collaborative Work techniques are exploited when generating interfaces and services for the specific Digital Library domain
Recent Developments in Cultural Heritage Image Databases: Directions for User-Centered Design
published or submitted for publicatio
Looking at a digital research data archive - Visual interfaces to EASY
In this paper we explore visually the structure of the collection of a
digital research data archive in terms of metadata for deposited datasets. We
look into the distribution of datasets over different scientific fields; the
role of main depositors (persons and institutions) in different fields, and
main access choices for the deposited datasets. We argue that visual analytics
of metadata of collections can be used in multiple ways: to inform the archive
about structure and growth of its collection; to foster collections strategies;
and to check metadata consistency. We combine visual analytics and visual
enhanced browsing introducing a set of web-based, interactive visual interfaces
to the archive's collection. We discuss how text based search combined with
visual enhanced browsing enhances data access, navigation, and reuse.Comment: Submitted to the TPDL 201
Digital libraries for creative communities
Digital library technologies have a great deal to offer to creative, design communities. They can enable large collections of text, images, music, video and other information objects to be organised and accessed in interesting and diverse ways. Ordinary peopleâpeople not traditionally viewed as 'creators' or 'designers'âcan now conceive, assemble, build, and disseminate new information collections. This paper explores the development rationale behind the Greenstone digital library technology. We also examine three examples of creative new techniques for accessing and presenting information in digital libraries and stress the importance of tailoring information access to support the requirements of the users and application area
Computer-based library or computer-based learning?
Traditionally, libraries have played the role of repository of published information resources and, more recently,
gateway to online subscription databases. The library online catalog and digital library interface serve an
intermediary function to help users locate information resources available through the library. With competition from Web search engines and Web portals of various kinds available for free, the library has to step up to play a more active role as guide and coach to help users make use of information resources for learning or to accomplish particular tasks. It is no longer sufficient for computer-based library systems to provide just search and access functions. They must provide the functionality and environment to support learning and become computer-based learning systems. This paper examines the kind of learning support that can be incorporated in library online catalogs and digital libraries, including 1) enhanced support for information browsing and synthesis through linking by shared meta-data, references and concepts; 2) visualization of related information; 3) adoption of Library 2.0 and social technologies; 4) adoption of Library 3.0 technologies including intelligent processing and text mining
Indexing, browsing and searching of digital video
Video is a communications medium that normally brings together moving pictures with a synchronised audio track into a discrete piece or pieces of information. The size of a âpiece â of video can variously be referred to as a frame, a shot, a scene, a clip, a programme or an episode, and these are distinguished by their lengths and by their composition. We shall return to the definition of each of these in section 4 this chapter. In modern society, video is ver
Digital libraries and minority languages
Digital libraries have a pivotal role to play in the preservation and maintenance of international cultures in general and minority languages in particular. This paper outlines a software tool for building digital libraries that is well adapted for creating and distributing local information collections in minority languages, and describes some contexts in which it is used. The system can make multilingual documents available in structured collections and allows them to be accessed via multilingual interfaces. It is issued under a free open-source licence, which encourages participatory design of the software, and an end-user interface allows community-based localization of the various language interfaces - of which there are many
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