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The purpose of this study is to build on previous research in hypermedia by including an investigation of the relationships between navigation tools, path patterns and mental representations with traditional measures of navigation outcomes. We examined the effects of four different spatial layouts on three facets of hypermedia use, performance, path patterns and mental representation, during an information search task. Typically, such measures are evaluated independently. We have sought to reveal what types of information in a navigation tool might mediate links between these three aspects of hypermedia use. The performance measures indicated that providing certain types of spatial information does not enhance speed, accuracy or economy but does enhance recall of page titles. Reference is then made to an earlier analysis on the dataset of path patterns using Multidimensional Scaling (MDS) which indicated that users’ paths reflected the most prominent type of information provided in the navigation tool. The MDS configurations were then compared to the results of a distance‐like ratings task using correlation and regression methods. Only users given explicit spatial cues in the navigation tool exhibited ratings that reflected the paths they had actually taken. Although spatial information may not impact surface performance measures such as speed and economy, spatial information does play a role in influencing where users go and the development of their mental representations of the material in a hyper document.

The authors introduce two semantics-based navigation applications that facilitate information-seeking activities in internal link-based web sites in Wikipedia. These applications aim to help users find concepts within a topic and related articles on a given topic quickly and then gain topical knowledge from internal link-based encyclopedia web sites. The paper aims to discuss these issues.

The WNavi s application consists of three information visualization (IV) tools which are a topic network, a hierarchy topic tree and summaries for topics. The WikiMap application consists of a topic network. The goal of the topic network and topic tree tools is to help users to find the major concepts of a topic and identify relationships between these major concepts easily. In addition, in order to locate specific information and enable users to explore and read topic-related articles quickly, the topic tree and summaries for topics tools support users to gain topical knowledge quickly. The authors then apply the k-clique of cohesive indicator to analyze the sub topics of the seed query and find out the best clustering results via the cosine measure. The authors utilize four metrics, which are correctness, time cost, usage behaviors, and satisfaction, to evaluate the three interfaces. These metrics measure both the outputs and outcomes of applications. As a baseline system for evaluation the authors used a traditional Wikipedia interface. For the evaluation, the authors used an experimental user study with 30 participants.

The results indicate that both WikiMap and WNavi s supported users to identify concepts and their relations better compared to the baseline. In topical tasks WNavi s over performed both WikiMap and the baseline system. Although there were no time differences in finding concepts or answering topical questions, the test systems provided users with a greater gain per time unit. The users of WNavi s leaned on the hierarchy tree instead of other tools, whereas WikiMap users used the topic map.

The findings have implications for the design of IR support tools in knowledge-intensive web sites that help users to explore topics and concepts.

The authors explored to what extent the use of each IV support tool contributed to successful exploration of topics in search tasks. The authors propose extended task-based evaluation measures to understand how each application provides useful context for users to accomplish the tasks and attain the search goals. That is, the authors not only evaluate the output of the search results, e.g. the number of relevant items retrieved, but also the outcome provided by the system for assisting users to attain the search goal.

Social navigation is an emerging trend for navigation in hypermedia. With social navigation, users can be guided through large volumes of learning content by cues which integrate the browsing history of past users. Earlier papers have shown that social navigation is suitable for navigation not only in classic hypermedia but also in time‐based learning media like web lectures by presenting prototype implementations. The purpose of this paper is to report on user experiences with social navigation for web lectures in the classroom.

This paper presents results obtained from a two‐term classroom study with a social navigation interface for web lectures. The study comprises both log file analysis and student questionnaires. The interface used in the study implements a footprint‐based social navigation approach for time‐based continuous media such as web lectures.

The results of the user study show that social navigation cues significantly affect user lecture navigation, causing users to pay more attention to the material previously explored by other users. The users' subjective feedback on the usefulness of the social navigation cues and related navigation components was significantly positive.

Social navigation has primarily been implemented and researched in traditional text‐ and picture‐based hypermedia. This paper presents an actual user study of footprint‐based social navigation for web lectures. The results of this study are relevant to both practitioners who want to use social navigation in web lectures and researchers who want to improve and research navigation approaches for time‐based media.

In this study, the integrated navigation system, consisting of radio and inertial navigation system (INS) altimeters, is presented. INS and the radio altimeter have different benefits and drawbacks. The integration is achieved by using an indirect Kalman filter. Hereby, the error models of the navigators are used by the Kalman filter to estimate vertical channel parameters of the navigation system. In the open loop system, INS is the main source of information, and radio altimeter provides discrete aiding data to support the estimations. At the next step of the study, in case of abrupt faults, the performance of the integrated system is examined. The optimal Kalman filter reacts with abnormal estimates to this situation as expected. To recover such a possible malfunctioning, the robust Kalman filter algorithm is suggested.

A rapidly growing segment of the internet is e‐commerce. The future of economic competitiveness for most enterprises relies on entrance and active participation in the e‐commerce market. About a third of the time users fail when they try to purchase products on an e‐commerce site. An essential problem with e‐commerce is that the controls and organization are different for each site. There is no standard way of building the navigation of the e‐commerce site. Most sites do not have a global navigation system and the local one may be confusing, like solving a maze. The goal of this study is to minimize users' look up time and make e‐commerce sites usable so visitors can easily and quickly access information. The objective of this study is to provide an implementation method by which an agent of the artificial intelligence (AI) user interface creates a standard navigation menu, called E‐menu, to increase the usability of e‐commerce.

The selected E‐menu items are based on a study of the graphical user interface (GUI) used in Windows environment and an evaluation of one hundred and two (102) e‐commerce sites. The prototype of the E‐menu system proves that a standard menu can be created by an intermediate intelligent agent, acting on behalf of the system user. Three sites out of 102 were chosen to be edited by the E‐menu server for the pilot study. This study also applies the Technology Acceptance Model (TAM) identifying components of usefulness and ease of use that predict user attitude toward the usage of the E‐menu system by conducting a Web‐based survey.

The survey result is promising and indicates that the e‐commerce users accept the idea of the E‐menu system. The E‐menu system makes it possible to create a standard navigation menu globally for e‐commerce sites. Although E‐menu is not ready for prime time, the prototype proves that a standard menu can be created by an intermediate intelligent agent, acting on behalf of the system user. These types of agents will become more popular in the internet paradigm as the number of e‐commerce sites increase and the usability of the sites decrease due to rapid deployment strategies and technological deficiencies.

The paper provides information on a method to increase the usability of e‐commerce sites.

This paper presents a model for an electronic book (hyper‐book). Hyper‐books are electronic books defined on the basis of the paper book metaphor. This metaphor guarantees ease of use and understanding, as the paper counterpart is a well known concept. The hyper‐book maintains many of the features of paper books, in terms of interface design and available tools (orientation, navigation, personalisation) and provides added‐value that exploits the technology underlying it, such as searching, links and history mechanisms. We give a formal definition of the hyper‐book model as a dynamic system. The hyper‐book model is defined in terms of structural and functional components. Further, how the system evolves under the effects of these functional components is presented. The structural components reflect the book subdivision in pages, and the page subdivision in elements such as text, figure etc. The functional aspect is indispensable for describing the use of a dynamic and interactive system. In particular, a number of operators, which represent reader services, allow the user to change the system ‘state’. This simple model is intuitive, general and easy to extend. The hyper‐book model has been implemented in a working system, and evaluated with a group of users. The evaluation has confirmed that the adoption of the book metaphor is very effective, as it guarantees ease of using and understanding the system. The use of the hyper‐book model for organising and presenting electronic documents could have a considerable impact in the context of electronic publishing. A system, based on this model, could have a large applicability and diffusion in several fields such as electronic libraries, thanks to its user‐friendly interface.

The technological revolution is affecting the structure, form and content of documents, reducing the effectiveness of traditional abstracts that, to some extent, are inadequate to the new documentary conditions. Aims to show the directions in which abstracting/abstracts can evolve to achieve the necessary adequacy in the new digital environments. Three researching trends are proposed: theoretical, methodological and pragmatic. Theoretically, there are some needs for expanding the document concept, reengineering abstracting and designing interdisciplinary models. Methodologically, the trend is toward the structuring, automating and qualifying of the abstracts. Pragmatically, abstracts networking, combined with alternative and complementary models, open a new and promising horizon. Automating, structuring and qualifying abstracting/abstract offer some short‐term prospects for progress. Concludes that reengineering, networking and visualising would be middle‐term fruitful areas of research toward the full adequacy of abstracting in the new electronic age.

Many libraries are creating Web sites, to serve a wide range of purposes. The author is Webmaster of the International Association of School Librarianship (IASL); using her own Web site as an example, she discusses a number of issues and tasks associated with creating and maintaining a professional Web site, within the context of a strategic planning approach to Web site development. Beginning with “Should we have a Web site?”, the stages of the process are outlined, including identification of aims and objectives, analysis of user needs, selection of content and services to be included, writing or developing the content, developing the information architecture, navigational aids, visual design of the site, HTML coding or use of page development software, metadata, mounting the completed pages on a Web server, testing and modifications, listing with search engines and directories, publicity and promotion, ongoing site maintenance, and ongoing monitoring and evaluation of the Web site. The strategic planning process provides a useful framework through which to view the many tasks associated with Web site development and maintenance and to conceptualise their relationship to one another.

The purpose of this study is: to examine the travel web sites quality dimensions that ultimately influence customers' satisfaction; and to conduct content analyses on the five prominent travel web sites.

A content analysis was conducted on the six prominent travel web sites as ranked by J.D. Power Consumer Report. A list of 53 attributes were selected, named, and categorized around the six web quality dimensions explored in this study.

The findings of the content analysis provide evidence to suggest that online travel companies are underperforming in terms of providing web service quality attributes that enhance customer satisfaction.

The focus of this study was only on the six prominent travel sites. However, the results cannot be generalized to all travel services. Additionally, only 53 attributes were extracted from the six web quality dimensions. There is a possibility that this study did not cover all the attributes that are part of the six dimensions.

Online travel companies can use the quality measurement tool developed in this study to detect service quality weaknesses and strengths. Moreover, travel businesses need to consider integrating features that make shopping experiences more enjoyable.

This study finding contributes to the present body of knowledge and also highlights web site quality dimensions that customers utilize in their assessment of overall online satisfaction.