用HTML编写工具和Domino Designer结合开发Web站点

用HTML编写工具和Domino Designer结合可以便捷地设计出既美观、又有价值的商用Web站点。介绍了Lotus公司提供的组件DDC与DIS。并用一个实例来说明如何利用它来结合Web站点编写工具建立Domino Web站点。     

Introducing hypermedia composites to WWW

This paper analyses current trends in hypermedia data modelling and suggests that composites are a necessary ingredient for any efficient authoring paradigm. The paper describes the motivations for using composites on an authoring level. It points out that WWW defines the notion of nodes and links, but it does not support composite components. It also examines the interplay between standard navigation and composite navigation. The paper offers a possible strategy for practical use of hypermedia composites on the WWW.     

Modeling, authoring and formatting hypermedia documents in the HyperProp system

This paper discusses multimedia and hypermedia modeling, authoring and formatting tools, presenting the proposals of the HyperProp system and comparing them to related work. It also highlights several research challenges that still need to be addressed. Moreover, it stresses the importance of document logical structuring and considers the use of compositions in order to represent context relations, synchronization relations, derivation relations and task relations in hypermedia systems. It discusses temporal and spatial synchronization among multimedia objects and briefly presents the HyperProp graphical authoring and formatting tools. Integration between the proposed system and the WWW is also addressed.     

A case study in systematic hypermedia design

Hypermedia structuring and navigation requires design methodologies different from those developed for standard information systems. This case study details our successful application of relationship management methodology (RMM), a hypermedia systems analysis and design methodology, to ACM SIGLINK's LINKBase. LINKBase is a World Wide Web (WWW) application, which dynamically generates WWW pages from a relational database containing information about hypermedia-related events such as conferences, publications, authors, and sponsoring organizations. We describe our experience applying RMM in this case study, summarize design lessons we learned in the process, present extensions to RMM, discuss human–computer interaction (HCI) aspects of RMM, and ground our work in the hypermedia design and HCI literature. Our experiences should encourage hypermedia and WWW developers to utilize systematic design techniques to build highly usable and useful WWW applications.     

Automatic authoring and construction of hypermedia for information retrieval

This paper describes the complete process and a tool for the automatic construction of a multimedia hypertext starting from a large collection of multimedia documents. Through the use of an authoring methodology, the document collection is automatically authored, and the result is a multimedia hypertext, also called a hypermedia, written in hypertext mark-up language (HTML), almost a standard among hypermedia mark-up languages. The resulting hypermedia can be browsed and queried with Mosaic, an interface developed in the framework of the World Wide Web Project. In particular, the set of methods and techniques used for the automatic construction of hypermedia is described in this paper, and their relevance in the context of multimedia information retrieval is highlighted.     

Bottom-Up Generation of Hypermedia Documents

Creating hypermedia documents for educational or informational purposes is a time and money consuming task. However, automation, especially for maintaining or adapting large hypermedia documents (e.g. a web site), is a must. This paper presents an approach for the bottom-up generation of hypermedia documents. The main idea is to start with a set of mediaobjects (text, images, video, etc.), select the most appropriate ones, sequence them to build a tree-like structure, integrate them into a set of screen pages, and finally convert each screen page into a single HTML file. Maintaining the resulting document is very easy because it only requires extending or modifying the pool of mediaobjects available and regenerating the document.     

Query relaxation by structure and semantics for retrieval oflogical Web documents

Since the Web encourages hypertext and hypermedia document authoring (e.g., HTML or XML), Web authors tend to create documents that are composed of multiple pages connected with hyperlinks. A Web document may be authored in multiple ways, such as: (1) all information in one physical page, or (2) a main page and the related information in separate linked pages. Existing Web search engines, however, return only physical pages containing keywords. We introduce the concept of information unit, which can be viewed as a logical Web document consisting of multiple physical pages as one atomic retrieval unit. We present an algorithm to efficiently retrieve information units. Our algorithm can perform progressive query processing. These functionalities are essential for information retrieval on the Web and large XML databases. We also present experimental results on synthetic graphs and real Web data     

From text to hypertext: A post-hoc rationalisation of LaTeX2HTML

The conventional hypertext authoring framework compels authors to represent their material as an interconnected network of nodes and links. Apart from the difficulties that this alone entails, the situation with HTML is even more problematic since the author is also responsible for mapping the abstract network model onto the computer file system. This is likely to hinder the widespread adoption of HTML by information owners who are finding it difficult not only to create but also to maintain coherent documents with complex interconnection topologies.In this paper it is argued that familiar document forms such as books, manuals, articles, reports, etc., often contain sufficient structural and cross-referential cues with which to build a rich hypertextual structure. It is shown how this structure can be automatically extracted and then realised as a collection of HTML files which can be explored using generated navigation panels. The conversion process and the advantages of this approach are illustrated with interactive examples using the LaTeX2HTML converter. Other unique features of LaTeX2HTML — mathematical equations and “conditional text” — are also discussed.Allowing authors to work with familiar metaphors and tools without compromising the flexibility afforded to them by the target hypertext system and delivery mechanism is perhaps the main reason for the growing popularity of text to hypertext conversion tools.     

WWW环境下超媒体协同创作系统的设计

1 引言大型文献的创作是一种涉及到总编、美术、策划以及多个作者之间的协作活动,超媒体技术的出现为大型文献创作者提供了一种新的创作方式,能够很好地支持这种协作活动。常规文献是连续的线性结构,文献在组织结构上没有划分手段,因此协同写作时难以进行分工。超媒体文献的离散化节点和超链组织有利于多人协作时任务的划分,多成员可在分布环境下分担完成文献中的不同部分,通过超链可将各部分链接起来,保持整个文献的完整性。对于读者,超文本技术允许有选择地阅读其中感兴趣的部分,而忽略其他部     

院系网站总体设计与技术细节──中山大学数学与计算科学学院网站建设

中山大学数学与计算科学学院网站构建以FRONTPAGE98为主要开发工具,以HTML和DHTML为主要开发语言,以WINDOWSNT4.0为网站服务器操作系统,以IIS3.0为WEB服务器,提供了HTTP和FTP两种服务。同时还运用了VB、JAVA、JavaScript语言为网站提供各种HTML、DHTML所无法实现的扩展功能。该文从网站的总体设计思想、设计过程与技术细节来阐述整个网站的设计过程。     

MediaWeaver—A Distributed Media Authoring System for Networked Scholarly Workspaces

We describe MediaWeaver—a software framework for composing distributed media in the context of university research and instruction. Authors compose networked media, software tools and mediastreams, and can freely annotate media by media of any form using schema of their own design. Faculty and student authors compose distributed media using common Macintosh, World Wide Web and NeXTSTEP applications, supported by services from UNIX workstations.The MediaWeaver system mediates between network multimedia services and interface kits with which novice programmers and non-programmers may easily create radically different interactive views into shared mediabases. The network services include search engine abstractions, filters, relational modeling frameworks.MediaWeaver has supported collaborative projects in history, drama, music, art, anthropology, environmental studies, and other fields since 1993. Applications range from traditional relational text databases and indexed HTML WWW sites to course readers, research archives, journals and seminar spaces.     

Piggy Bank: Experience the Semantic Web inside your web browser

The Semantic Web Initiative envisions a Web wherein information is offered free of presentation, allowing more effective exchange and mixing across web sites and across web pages. But without substantial Semantic Web content, few tools will be written to consume it; without many such tools, there is little appeal to publish Semantic Web content.To break this chicken-and-egg problem, thus enabling more flexible information access, we have created a web browser extension called Piggy Bank that lets users make use of Semantic Web content within Web content as users browse the Web. Wherever Semantic Web content is not available, Piggy Bank can invoke screenscrapers to re-structure information within web pages into Semantic Web format. Through the use of Semantic Web technologies, Piggy Bank provides direct, immediate benefits to users in their use of the existing Web. Thus, the existence of even just a few Semantic Web-enabled sites or a few scrapers already benefits users. Piggy Bank thereby offers an easy, incremental upgrade path to users without requiring a wholesale adoption of the Semantic Web's vision.To further improve this Semantic Web experience, we have created Semantic Bank, a web server application that lets Piggy Bank users share the Semantic Web information they have collected, enabling collaborative efforts to build sophisticated Semantic Web information repositories through simple, everyday's use of Piggy Bank.     

Webvise: browser and proxy support for open hypermedia structuring mechanisms on the World Wide Web

This paper discusses how to augment the World Wide Web with an open hypermedia service (Webvise) that provides structures such as contexts, links, annotations, and guided tours stored in hypermedia databases external to the Web pages. This includes the ability for users collaboratively to create links from parts of HTML Web pages they do not own and support for creating links to parts of Web pages without writing HTML target tags. The method for locating parts of Web pages can locate parts of pages across frame hierarchies and it also supports certain repairs of links that break due to modified Web pages. Support for providing links to/from parts of non-HTML data, such as sound and movie, will be possible via interfaces to plug-ins and Java-based media players.The hypermedia structures are stored in a hypermedia database, developed from the Devise Hypermedia framework, and the service is available on the Web via an ordinary URL. The best user interface for creating and manipulating the structures is currently provided for the Microsoft Internet Explorer 4.x browser through COM integration that utilizes the Explorer's DOM representation of Web-pages. But the structures can also be manipulated and used via special Java applets and a pure proxy server solution is provided for users who only need to browse the structures. A user can create and use the external structures as `transparency' layers on top of arbitrary Web pages, the user can switch between viewing pages with one or more layers (contexts) of structures or without any external structures imposed on them.     

HM-Card: A new hypermedia authoring system

HM-Card is a novel hypermedia authoring and presentation system for the development and use of a diverse range of hypermedia applications on PCs/MS-Windows. It is the first tool to implement the HM data model, a recent approach to provide a sound theoretical basis for the sophisticated structuring and navigating of hypermedia databases. However, in this paper we only cover the HM data model as the underlying theoretical foundation for the actual authoring system HM-Card. HM-Card offers an extensive set of functional and structural authoring elements, such as animations, question/answer dialogs, transparent import of external documents, and execution of other MS-Windows applications. The user-interface of HM-Card is intended to support rapid prototyping and authoring of complex hypermedia applications. Finished HM-Card applications can be run as stand-alone systems, used in MS-Windows' OLE (Object Linking and Embedding concept) clients, as well as be integrated as modules into large-scale distributed hypermedia systems.     

WWW网页布局规则初探

连入WWW(WorldWideWeb)的用户和网点数量每年成倍增长.要想使一个网点在数以百万计的网点中给访问者留下深刻的印象,设计出一个含有丰富信息、易于浏览、视觉上怡人的网页(WebPages)是不可或缺的.本文从Gestalt心理学、传统印刷术、超文本制作和人机交互学出发,尝试提出一个网络文档(WebDocuments)界面布局的设计规则,包括文本、图形、静态和动态的网络文档.本文把网络文档分成五种基本类型,然后给出了一些布局规则.     

Toward support for hypermedia on the World Wide Web

As organizations rush to embrace the World Wide Web as their primary application infrastructure, they should not bypass the benefit of hypermedia support. The Web's infrastructure can serve as an interface to all interactive applications and, over time, will become the graphical user interface model for new applications. Ubiquitous hypermedia support should become the jewel of the Web environment. Through Web integration, hypermedia could become an integral part of every interactive application. With the proper tools to support hypermedia in Web application development, it will become second nature for developers and individual authors to provide supplemental links and hypermedia navigation. However, as organizations adopt the Web as their primary application infrastructure, designers may use Java and other tools to recreate current application functionality, and not take advantage of the Web's hypermedia-augmented infrastructure. If users, designers, MIS departments and organizations don't demand hypermedia support, hypermedia may get lost in the frenzy of Web integration     

Java hypermedia: on and beyond the world wide web

The world wide web (WWW) has made hypermedia applications widespread. Originally, the WWW was used only for ‘freestyle’, unrestricted browsing and its foundation technologies reflect this. Now, developers are working on more advanced hypermedia for new application domains. Improvements in graphical user interfaces, adaptive guidance and integrated navigation support are the main objectives. In this paper, we present Java as a mature implementation language for advanced Internet hypermedia. A minimalistic Java approach (MJA) towards development is introduced. MJA integrates Java with existing object-oriented hypermedia design methodologies. MJA is illustrated with HyperMap, a browser application for spatial hypermedia.     

Mosaic and the World Wide Web

The World-Wide Web, an information service on the Internet, uses hypertext links to other textual documents or files. Users can click on a highlighted word or words in the text to provide additional information about the selected word(s). Users can also access graphic pictures, images, audio clips, or even full-motion video through hypermedia, an extension of hypertext. One of the most popular graphics-oriented browsers is Mosaic, which was developed at the National Center for Supercomputing Applications (NCSA) as a way to graphically-navigate the WWW. Mosaic browsers are currently available for Unix workstations running X Windows, PCs running Microsoft Windows, and Macintosh computers. Mosaic can access data in WWW servers, Wide Area Information Servers (WAIS), Gopher servers, Archie servers, and several others. The World-Wide Web is still evolving at a rapid pace. Distributed hypermedia systems on the Internet will continue to be an active area of development in the future. The flexibility of the WWW design, its use of hyperlinks, and the integration of existing WAIS and Gopher information resources, make the WWW ideal for future research and study. Highly interactive multimedia applications will require more sophisticated tools than currently exist. The most significant issue that needs to be resolved is the mismatch between WWW system capabilities and user requirements in the areas of presentation and quality of service     

On Finding Templates on Web Collections

Templates are pieces of HTML code common to a set of web pages usually adopted by content providers to enhance the uniformity of layout and navigation of theirs Web sites. They are usually generated using authoring/publishing tools or by programs that build HTML pages to publish content from a database. In spite of their usefulness, the content of templates can negatively affect the quality of results produced by systems that automatically process information available in web sites, such as search engines, clustering and automatic categorization programs. Further, the information available in templates is redundant and thus processing and storing such information just once for a set of pages may save computational resources. In this paper, we present and evaluate methods for detecting templates considering a scenario where multiple templates can be found in a collection of Web pages. Most of previous work have studied template detection algorithms in a scenario where the collection has just a single template. The scenario with multiple templates is more realistic and, as it is discussed here, it raises important questions that may require extensions and adjustments in previously proposed template detection algorithms. We show how to apply and evaluate two template detection algorithms in this scenario, creating solutions for detecting multiple templates. The methods studied partitions the input collection into clusters that contain common HTML paths and share a high number of HTML nodes and then apply a single-template detection procedure over each cluster. We also propose a new algorithm for single template detection based on a restricted form of bottom-up tree-mapping that requires only small set of pages to correctly identify a template and which has a worst-case linear complexity. Our experimental results over a representative set of Web pages show that our approach is efficient and scalable while obtaining accurate results.