SemWebDL: A privacy-preserving Semantic Web infrastructure for digital libraries

Recent advances in digital libraries have been closely intertwined with advances in Internet technologies. With the advent of the Web, digital libraries have been able to reach constituencies previously unanticipated. Because of the wide deployability of Web-accessible digital libraries, the potential for privacy violations has also grown tremendously. The much touted Semantic Web, with its agent, service, and ontology technologies, is slated to take the Web to another qualitative level in advances. Unfortunately, these advances may also open doors for privacy violations in ways never seen before. We propose a Semantic Web infrastructure, called SemWebDL, that enables the dynamic composition of disparate and autonomous digital libraries while preserving user privacy. In the proposed infrastructure, users will be able to pose more qualitative queries that may require the ad hoc collaboration of multiple digital libraries. In addition to the Semantic Web-based infrastructure, the quality of the response would rest on extraneous information in the form of a profile. We introduce the concept of communities to enable subject-based cooperation and search speedup. Further, digital libraries heterogeneity and autonomy are transcended by a layered Web-service-based infrastructure. Semantic Web-based digital library providers would advertise to Web services, which in turn are organized in communities accessed by users. For the purpose of privacy preservation, we devise a three-tier privacy model consisting of user privacy, Web service privacy, and digital library privacy that offers autonomy of perspectives for privacy definition and violation. We propose an approach that seamlessly interoperates with potentially conflicting privacy definitions and policies at the different levels of the Semantic Web-based infrastructure. A key aspect in the approach is the use of reputations for outsourcing Web services. A Web service reputation is associated with its behavior with regard to privacy preservation. We developed a technique that uses attribute ontologies and information flow difference to collect, evaluate, and disseminate the reputation of Web services.     

A Review of “Technology and Literacy: 21st Century Library Programming for Children and Teens”

ABSTRACT

Given the endless volume of information available today, searchers are forced to satisfice when searching. The first satisfactory alternative is chosen over the best. Digital library search services, however, do not support satisficing users. There is no single, simple, comprehensive search service available to end-users to meet their need to gather information on alternatives from all information repositories accessible through a digital library. Federated search services bridge the gap between satisficing searchers and today's digital libraries.     

Federated Searching

ABSTRACT

With an increasing number of libraries implementing federated searching to help users negotiate the complex electronic database environment, it is important to note how users are being instructed to use these resources. This article presents the results of examinations of the Web sites of Association of Research Libraries (ARL) member institutions that currently use federated search products. It analyzes help guides and search tips related to federated searching to determine what concepts are being explained to users and how the information is being communicated. The result of the evaluation of these Web sites is a list of “best practice” guidelines that may be used by librarians creating their own federated searching guides. doi:10.1300/J136v12n03_03     

Optimising Publications for Google Users

Abstract

Librarians should think explicitly about Google users whenever they publish on the Web, and should update their policies and procedures accordingly. The article describes procedures that libraries can adopt to ensure that their publications are optimised for access by users of Google and other Web search engines. The aim of these procedures is to enhance resource discovery and information retrieval, and to enhance the reputation of libraries as valued custodians of published information, as well as exemplars of good practice in information management.     

Media Finders

ABSTRACT

The Ball State University Libraries' collections of audiovisual materials are unclassified and kept in closed stacks. Users must search the OPAC to find these materials, which is difficult for users who don't know what sorts of searching options are available or what materials the libraries have. The libraries have developed a series of Web forms that provide guided search options for various types of media, including feature films, non-classical music, and spoken recordings. The Media Finders provide better exposure for and more convenient searching of subsets of library materials. This paper describes the development of the Media Finders, their benefits and drawbacks, and background information on the technical elements and searching strategies used by the Media Finders.     

Libraries Begin to Engage Their Menacing Mobile Phone Hordes Without Shhhhh!

ABSTRACT

Few libraries are experimenting with using mobile phones to engage their patrons to improve their service experience rather than focusing exclusively on managing phone use behavior: library code of conduct policies, policy enforcement, signage, quiet library space zoning, and strategies for staff and patron buy-in. Over the past 18 months signs of hope have appeared. Libraries are beginning to engage their users via mobile phones in four ways: audio tours, text message reference service, text message alerts, and mobile library collection search engines. They are not waiting for a better mobile phone service development environment. Library staffs are redefining the possible ways to engage their communities.     

Searching for multimedia: analysis of audio,video and image Web queries

The development of digital libraries has enhanced the integration of textual and multimedia information in many document collections. The World Wide Web provides the connectivity for many digital library users. Studies exploring the searching characteristics of Web users are an important and a growing area of research. Most Web user studies have focused on general Web searching, regardless of subject matter or format. Little research has examined how Web users search for multimedia information. Our study examines users' multimedia searching on a major Web search service. The data set examined consisted of 1,025,908 queries from 211,058 users of Excite ®, a major Web search service. From this data set, we identified and analyzed queries for audio, image, and video queries. Our findings were compared to results from general Web searching studies. Implications for the design of Web searching services and interfaces are discussed.     

SRU,Open Data and the Future of Metasearch

ABSTRACT

Search/Retrieve via URL (SRU)isaREST-ful Web service defined by the Library of Congress that supports the standardized, machine-readable transmission of textual queries via HTTP using XML. This article evaluates the suitability of SRU for wide implementation by information providers of all types as a tool to enable effective metasearch services. SRU proves to be an excellent choice for commercial publishers, content aggregators, Internet search engines, and digital library maintainers who wish to make their content available to metasearch tools. This article also presents a hypothetical scenario illustrating how a library could use SRU compliant information resources to implement a metasearch service. doi:10.1300/J136v12n03_09     

User Expectations in the Time of Google: Usability Testing of Federated Searching

SUMMARY

As libraries expand their services into the world of federated searching, librarians need to work with users to discover what their expectations are and how the library can customize the software to meet users' expectations. This article describes the user testing performed at Texas A&M University during 2005 as the libraries implemented a new federated search service called Search Now (ExLibris' MetaLib). Over fifty volunteers–including undergraduates, graduate students, faculty, and library faculty and staff–helped to test the new system and offered suggestions for improvements. Problems were noted and, where possible, modifications were made to improve results. These modifications were then tested again. Major issues noted during the usability testing included: user expectations of search performance; information included in and the layout of the search results; availability of advanced search options; and lack of ability to limit by format, scholarly nature of journal, date and full-text availability. Suggestions for further development are also presented.     

Centralizing Information About Library Services and Resources

SUMMARY

The School of Information Resources and Library Science at the University of Arizona (UA) has a mix of local and distance students in its program. The librarian at the UA Library who works with this program developed a Web site that centralizes information about several library services and resources that benefit distance learners: online orientation and research guides, chat reference, document delivery, and more. Bringing together this information with a focus on distance learners provides a platform for delivering the library to all users, whatever their distance from the library.     

Assessing the usability of on-line library systems

Computer-based library systems are becoming pervasive throughout public and university libraries. The purpose of the present study was to survey the users of a representative system to assess the degree to which they used the system's functionality, their difficulties with the system, and their experiences learning the system. The majority of the 966 users of the system made limited use of the more advanced system commands and had difficulty understanding how the system works. Importantly, many of the users reported remotely accessing the system, which has implications for the development of training and help systems. The data from the survey are interpreted in the context of suggestions for design and training improvements for library on-line systems.     

Current Awareness on a Shoe String

ABSTRACT

There is no shortage of articles describing the nature of blogs and RSS feeds and their potential use in libraries. However, articles describing the implementation and evaluation of RSS for library current awareness services and the lessons learned along the way are harder to find. This case study relates the experience of implementing an RSS feed-based current awareness service in a small special library in Canada, and the preliminary uptake and feedback of the staff it serves.     

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     

Applying Learning Style Theory to Web Page Design

ABSTRACT

Library Web sites can be instructional tools, especially for those patrons who utilize library resources from their homes. Many libraries are developing online tutorials, but there is an opportunity for Web instruction on another level. The organization and design of a Web site can act as an instructional tool in itself. This paper is a call to library Web designers to assess their work in terms of learning style preferences. Learning style theory is based on how people process information and learn new material. Applying these ideas to Web page design can make library resources more accessible and improve the patron's comprehension of how the library works.     

The Virtual Librarian and the Electronic Reference Interview

ABSTRACT

For many students, the World Wide Web is their main access point for library research and, therefore, libraries need to find a venue for the virtual reference interview. This paper discusses the use of the library home page as a reference tool and its importance in the online reference interview process. This article also discusses some of the research that went into the creation of a home page for a large, urban, academic institution, how this research was utilized, and how the resulting page serves as an online surrogate for the in-person reference interview.     

Library Instruction on the Web

Abstract

With the establishment of the World Wide Web as a standard information tool in academic libraries, there is greater demand for research assistance than ever before. Reference questions involve more teaching time given the number of interfaces clients confront as they navigate the book catalog, electronic databases, and the Web. Librarians require expert knowledge of multiple search strategies at their fingertips as well as the ability to teach others how to apply them effectively. How can instruction librarians use this new medium to serve as a dynamic learning aid to students in the classroom, at the reference desk, in distance education courses, and as a self-directed learning tool? This paper outlines how the Web can function as our latest desktop publishing system, revitalize subject pathfinders and “how-to” guides, and promote the invention of interactive library tutorials. A Web site presenting design ideas accompanies this article at: http://stauffer.queensu.ca/inforef/tutorials/cla/clahome.htm     

Personalisation and recommender systems in digital libraries

Widespread use of the Internet has resulted in digital libraries that are increasingly used by diverse communities of users for diverse purposes and in which sharing and collaboration have become important social elements. As such libraries become commonplace, as their contents and services become more varied, and as their patrons become more experienced with computer technology, users will expect more sophisticated services from these libraries. A simple search function, normally an integral part of any digital library, increasingly leads to user frustration as user needs become more complex and as the volume of managed information increases. Proactive digital libraries, where the library evolves from being passive and untailored, are seen as offering great potential for addressing and overcoming these issues and include techniques such as personalisation and recommender systems. In this paper, following on from the DELOS/NSF Working Group on Personalisation and Recommender Systems for Digital Libraries, which met and reported during 2003, we present some background material on the scope of personalisation and recommender systems in digital libraries. We then outline the working group’s vision for the evolution of digital libraries and the role that personalisation and recommender systems will play, and we present a series of research challenges and specific recommendations and research priorities for the field.     

The World Wide Web

Abstract

The World Wide Web is increasingly being used by libraries as a way to extend traditional services to patrons. The Web can also be used as a tool to facilitate communications between library professionals and to deliver presentations, organize exhibits, and develop demonstration projects. The allocation of personal Web work space on a library server provides librarians with a means to experiment with using the medium and a place to publish information of interest to the library profession. This paper explores the uses of the Web to enhance communications between library professionals and addresses some of the issues associated with such uses.     

Linking learning goals and educational resources through interactive concept map visualizations

Concept browsing interfaces can help educators and learners to locate and use learning resources that are aligned with recognized learning goals. The Strand Map Service enables users to navigate interactive visualizations of related learning goals and to request digital library resources aligned with learning goals. These interfaces are created using a programmatic Web service interface that dynamically generates interactive visual components. Preliminary findings suggest that these library interfaces appear to help users stay focused on the scientific content of their information discovery task, as opposed to focusing on the mechanics of searching.