Designing personalized digital libraries over websites with semistructured data

Issues concerning the design of personalized digital libraries over collections of semistructured data available on the Web are considered. The approach suggested makes it possible to design libraries adjusted to the personal needs of information users that place various requirements upon the contents and representation of information. The digital library is designed as a composition of fragments of websites. In this paper, a method for the compositional design of information systems is applied to semistructured data on the Web. This method was developed at the Institute for Problems of Informatics of the Russian Academy of Sciences (IPI RAS) [2]. The design procedure is demonstrated by designing a library over two websites containing data about registered patents.     

A hybrid system approach for supporting digital libraries

A digital library (DL) consists of a database which contains library information and a user interface which provides a visual window for users to search relevant information stored in the database. Thus, an abstract structure of a digital library can be defined as a combination of a special purpose database and a user-friendly interface. This paper addresses one of the fundamental aspects of such a combination. This is the formal data structure for linking an object oriented database with hypermedia to support digital libraries. It is important to establish a formal structure for a digital library in order to efficiently maintain different types of library information. This article discusses how to build an object oriented hybrid system to support digital libraries. In particular, we focus on the discussion of a general purpose data model for digital libraries and the design of the corresponding hypermedia interface. The significant features of this research are, first, a formalized data model to define a digital library system structure; second, a practical approach to manage the global schema of a library system; and finally, a design strategy to integrate hypermedia with databases to support a wide range of application areas. Received: 15 December 1997 / Revised: June 1999     

Interactive context-aware user-driven metadata correction in digital libraries

Personal name variants are a common problem in digital libraries, reducing the precision of searches and complicating browsing-based interaction. The book-centric approach of name authority control has not scaled to match the growth and diversity of digital repositories. In this paper, we present a novel system for user-driven integration of name variants when interacting with web-based information??in particular digital library??systems. We approach these issues via a client-side JavaScript browser extension that can reorganize web content and also integrate remote data sources. Designed to be agnostic towards the web sites it is applied to, we illustrate the developed proof-of-concept system through worked examples using three different digital libraries. We discuss the extensibility of the approach in the context of other user-driven information systems and the growth of the Semantic Web.     

Digital library information-technology infrastructures

This paper charts a research agenda on systems-oriented issues in digital libraries. It focuses on the most central and generic system issues, including system architecture, user-level functionality, and the overall operational environment. With respect to user-level functionality, in particular, it abstracts the overall information lifecycle in digital libraries to five major stages and identifies key research problems that require solution in each stage. Finally, it recommends an explicit set of activities that would help achieve the research goals outlined and identifies several dimensions along which progress of the digital library field can be evaluated.     

数字图书馆多媒体信息传输服务质量管理方案的研究

本文研究了分步式多媒体信息系统QOS管理方案,给出了该系统QOS管理基本要求 ,并针对数字化图书馆海量分布多媒体信息资源的特点,给出了其QOS管理的基本功能以及 具体实现,并在局域网环境下对该方案进行了测试．     

Digital libraries and Web 3.0. The CallimachusDL approach

The constantly increasing volume of information available on the Internet is changing the forms of classification and access to data. Given the immense collection of information stored on the Internet, digital libraries constitute a fundamental subject of research. Among the challenges of classifying, locating and accessing knowledge in digital libraries tackling with the huge amount of resources the Web provides, improving digital libraries by means of different strategies, particularly, using semantics remains a promising and interesting approach. In this paper, CallimachusDL is presented, a semantics-based digital library which provides faceted search, enhanced access possibilities and a proof-of-concept implementation. CallimachusDL represents a novel approach to digital libraries, integrating social web and multimedia elements in a semantically annotated repository. The results of the implementation indicate that the features proposed in CallimachusDL are encouraging and extendable in the use of digital libraries.     

Using distributed objects to build the Stanford digital libraryInfobus

For digital libraries to thrive, the providers of information processing services must be able to evolve their systems autonomously. However, as the complexity of their offerings increases, software tools more sophisticated than existing Web facilities are needed. Distributed object technology may be the answer. The availability of high-volume, increasingly sophisticated information is making the need for metadata facilities more urgent. Traditional, library-based approaches break down when used in an advanced digital library. More modular mechanisms are needed, and the CORBA system is one approach. Digital libraries are affected at a deep technical level by the widely differing user traditions of Web users and library patrons. The challenge and opportunity of digital libraries will be the synthesis of these traditions. The authors set out to create a technical infrastructure to support the construction of digital libraries. In their view, a digital library comprises widely distributed resources that can be maintained autonomously by different organizations and will not require adherence to uniform interfaces     

网格环境下基于OAI的数字图书馆互操作机制

现有数字图书馆（DLs）互操作方案，在实现大规模数字图书馆集成方面都存在一定的局限性。该文将网格技术与OAI-PMH框架相结合，提出了一个数字图书馆网格（DL Grid）互操作框架，并对网格环境下元数据资源的发现、采集、重组等关键问题进行了分析和设计，初步实现了在集成的元数据基础上数字图书馆信息的共享。     

An automatic system for identifying authorities in digital libraries

In this paper we introduce an automatic system to perform authority control in digital libraries based on data mining techniques. This system is able to find the different representations for an author name as well as to distinguish between different authors sharing the same name. Using that information, the system shows the user the results of a search over a digital library properly grouped according to their authorship. To accomplish this task, it only uses information that can be directly obtained from the digital library itself without any kind of external data. The system has been tested using different digital libraries on the web.     

Digital Libraries for the Next Millennium: Challenges and Research Directions

The unprecedented growth of Internet technologies has made resources on the World Wide Web instantly accessible to various user communities through digital libraries. Since the early 1990s, there have been several digital library initiatives sponsored by government agencies and/or private organizations all over the world. A digital library is a networked system environment that provides diverse user communities with coherent, seamless and transparent access to large, organized, and digitized information resources. This article provides a comprehensive overview of major digital library projects that are currently being undertaken across the globe. We also identify and discuss major challenges and research issues to be addressed in the design and implementation of digital libraries for the next millennium. We believe that digital libraries are ripe with research opportunities, offer many challenges, and will continue to grow in the next several years.     

A digital library instead of a traditional database for nanotechnologies: An attempt to use the ABCD system

Against the background of the limited possibilities of the traditional databases during the creation of the information infrastructure of modern science, the advantages and rich potential of digital libraries as a new class of information systems are shown in this paper. Based on the example of nanotechnologies, the specific requirements raised for the created digital libraries are analyzed, i.e., support of semi-structured data, use of a number of formats (text, tables, and graphics), and the active involvement of context information deposited on outside resources. The ABCD system, which is proposed for the control of libraries and information centers, on whose basis an information system for the use of nanomaterials in power engineering has been created, is considered in detail.     

基于现代信息技术的数字图书馆建设

信息爆炸的21世纪,信息作为重要资源越来越受到各方面的关注,也给传统图书馆的收藏和管理带来了挑战。图书馆如何在信息时代生存下去并获得更大发展。文章就数字图书馆发展历程和数字图书馆建设面临的问题,从信息资源共建共享角度,提出信息时代数字图书馆建设的几点建议,为数字图书馆建设提供参考。     

Constructing Geographic Digital Libraries using a Hypermedia Framework

This paper presents an object oriented hypermedia database framework for designing and building digital libraries, which are treated as enhanced hypermedia applications. It is based on combining and extending results from two domains: the navigation characteristics of hypertext systems, and the view mechanism and the persistent storage management facility of an object oriented database management system. As a result, users can alternate between two integrated types of interaction modes. The hypertext dimension of the framework allows navigation via static and dynamic hyperlinks; the object oriented database support enables querying by content and metadata management. The framework includes still a digital library design methodology that guides the implementation of digital libraries over the OODBMS. This proposal integrates hypermedia and DL concepts to a database environment, being instantiated on the realm of geographic data.     

DelosDLMS

DelosDLMS is a novel digital library management system (DLMS) that has been developed as an integration effort within the DELOS Network of Excellence, a European Commission initiative funded under its fifth and sixth framework programs. In this paper, we describe DelosDLMS that takes into account the recommendations of several activities that were initiated by DELOS including the DELOS vision for digital libraries (DLs). A key aspect of DelosDLMS is its novel generic infrastructure that allows the generation of digital library systems out of a set of basic system services and DL services in a modular and extensible way. DL services like feature extraction, visualization, intelligent browsing, media-type-specific indexing, support for multilinguality, relevance feedback and many others can easily be incorporated or replaced. A further key aspect of DelosDLMS is its robustness against failures and its scalability for large collections and many parallel user requests. We discuss the current status of an effort to build DelosDLMS, a Digital Library Management System that integrates in various ways several components developed by DELOS members and showcases a great variety of functionality that is outlined as part of the DELOS vision.     

Multimedia information using mobile computers: accessing the digital campus and the digital library

Abstract

It is clear that the role of the information resource is changing. Major publishers have been slow to adapt to the emergence of a global digital medium, but there are now signs that a great deal of information will be delivered on-line, (although at present only about 25 databases account for 80% of usage in UK and optical publishing is still in its early stages). However, digital publishing on the Internet — with services for libraries such as just-in-time purchasing and delivery, for example — will be a driving force in creating the ‘global digital medium’. One issue that will become increasingly relevant is how the individual user accesses rich multimedia data in the most appropriate way. The ‘digital university campus’ and the ‘digital library’ are coming to be important concepts, with the aim that users of information services will receive information on-line supported by a ‘ubiquistructure’ of information technology. For the ‘digital campus’ this means that not only scholarly but also teaching activities are based on interactive access to information, and where not only the digital library but also the digital bookshop and the digital classroom are becoming possible with the development of 140Mb/s SuperJANET links. However, it is recognised that libraries will not be truly digital for the foreseeable future, and that libraries will maintain traditional and digital media side by side. In this paper, reporting on work at the University of Bristol's Educational Technology Service multimedia resources unit MRU, and the University of the West of England's Centre for Personal Information Management (in collaboration with Hewlett-Packard Research Laboratories and the University of Bristol's Centre for Communications Research), we look the ‘digital library’ and ‘digital campus’ from the perspective of the individual user and her information needs. We are particularly interested in the use of small, mobile computers as access points to the global digital medium. We suggest that, in an environment of change — where the traditional campus and the traditional library exist alongside the digital campus and digital library — the most appropriate form of access technology is based on ‘personal technology’ which allows a linking between digital information and traditional paper-based information.     

数字图书馆互操作信息服务体系框架的研究

提出了一种数字图书馆互操作信息服务体系框架模型(IMDL),系统采用组件式结构设计,实现了图书馆多种异构信息服务的集成,具有动态性和可扩展性系统中间过程交换信息格式采用RDF,完成协议转换、查询转换和结果合成。以中国数字图书馆公司的异构数字资源为背景,介绍了模型的具体实现和应用测评。     

Visual FoxPro下的图书管理系统开发

论文探讨Visual FoxPro了下数字图书馆系统的建设问题。设计开发了数字图书馆的主要功能,给出了业务流程和数据表项。另外渗透入了Visual FoxPro下数字图书馆的集成,对同类系统的开发有着较好的参考价值。     

TIME – a multi-leveled framework for evaluating and designing digital libraries

Even though these are early days for digital libraries, three decades of research on human-computer interaction in general, and the recent history of hypermedia research in particular, indicate that whatever else occurs, the usability of digital library applications will prove crucial to widespread acceptance. In the present paper an evaluation framework (termed TIME) is outlined. TIME offers designers and implementers of digital libraries a framework to address key human factors in a user-centered manner. Bridging all levels of human factors, from the ergonomic to the user goal, TIME is a multilevel framework that highlights the interplay of multiple issues affecting user response to digital documents. Received: 15 December 1997 / Revised: June 1999     

基于网格的联邦数字图书馆

介绍了一种联邦数字图书馆结构,它通过对网络中数字图书馆资源进行一定的服务封装形成数字图书馆资源仓储节点,在此基础上运用网格思想对仓储节点进行整合,形成数字图书馆资源联邦,使用户能够通过联邦门户透明地访问联邦中所有数据仓储节点中的图书馆数据资源。为了满足专业化、个性化数字图书馆建立的需求,联邦提供了以检索为基础的个性化数字图书馆实例的动态定制服务。     

Digital Preservation: A Time Bomb for Digital Libraries

The difficulty and expense of preserving digital information is a potential impediment to digital library development. Preservation of traditional materials became more successful and systematic after libraries and archives integrated preservation into overall planning and resource allocation. Digital preservation is largely experimental and replete with the risks associated with untested methods. Digital preservation strategies are shaped by the needs and constraints of repositories with little consideration for the requirements of current and future users of digital scholarly resources. This article discusses the present state of digital preservation, articulates requirements of both users and custodians, and suggests research needs in storage media, migration, conversion, and overall management strategies. Additional research in these areas would help developers of digital libraries and other institutions with preservation responsibilities to integrate long-term preservation into program planning, administration, system architectures, and resource allocation. This revised version was published online in July 2006 with corrections to the Cover Date.