F. Garzotto, L. Mainetti, and P. Paolini. Hypermedia design, analysis and evaluation issues. CACM, 38(8):74--84, 1995.  Home/Search   Document Not in Database   Summary   ACM   TOC   Related Articles   Check

....application and perspective links) it allows the structuring of an application according to a number of user profiles that can dynamically change, while remaining coherent. The model has been used in designing new applications, and as a reference framework for the evaluation of existing ones [GAR 95] The notion that a hypermedia is a way to manage relationships among information objects is the basis of the RMM design methodology [ISA 95] This methodology, based on extensions to the classical entity relationship model, appears suitable for applications in the field of museums and ....

Franca Garzotto, Luca Mainetti, Paolo Paolini, Hypermedia Design, Analysis and Evaluation Issues, Comm. ACM, 38, 8, pp. 74-86, 1995

....is further considered in Section 3.2. 3.2 A General Hyperbase Data Model for Data Quality In this section, we show how to realize the step of quality design, shown in Figure 3, by proposing a model to associate quality information to web publishing data. Specializing a terminology introduced in [5], in the following we call as hyperbase data model a specific data model for hypertext representation that includes data structures, while being purged from the strictly navigational el ements. An example of a hyperbase data model is the one of RMM [2, 3] which includes constructs such as ....

Garzotto F., Mainetti L., Paolini P.: Hypermedia design, analysis and evaluation issues. Communication of the ACM, vol. 58, no. 8, 1995.

....then search for the appropriate meta tags, using an ordinary parser or tools specifically designed for wrapping HTML pages (e.g. 8, 19] and extract the string between them. 2. 2 Related Work Various methodologies have been recently presented in the context of hypermedia design, including HDM [18, 17], RMM [22] and OOHDM [28] All of them introduce models for the description of hypermedia applications, the essential constructs being the ones of entity, link and menu, the latter used to represent access structures. Both RMM and OOHDM organize the design process in specific phases: i) ....

....be in a single page. Moreover, it is dicult to reason about performance issues, since, for example, there is no notion of form, a construct very common in Web sites. At the same time, the absence of a concise description of the page structure makes restructurings more dicult. In this respect, HDM [18, 17] provides a first solution by distinguishing two different design activities: authoring in the lawe and authoring in the small. Authoring in the large aims at describing the overall organization and behaviour of a hypermedia application, whereas authoring in the small deals with specific details ....

F. Garzotto, L. Mainetti, and P. Paolini. Hypermedia design, analysis and evaluation issues. Communications of the ACM, 58(8):74 86, August 1995.

....replication. The problem, however, is not related to the interface design. 3. Information classification Information classification is needed by the designer in order to build a good hypertext information system. Many design models and methodologies have been proposed, among them we cite HDM [9, 10] and RMM [11, 12] as the most representative. Both methodologies are user centered and take consistency and navigation control as the main design goals. The information a user can access can be classified in at least four types, according to the purpose of the information itself for the user: ....

F. Garzotto, L. Mainetti and P. Paolini. Hypermedia Design, Analysis and Evaluation Issues, Comm.of the ACM, 38, 8, 1995

....[21] a database language to represent and query complex objects by means of directed labeled graphs. In order to represent and query WWW data, WG Log extends G Log by including both logical and structural (navigational) concepts, and by allowing to specify some typical hypermedia design notation [13, 16] like index pages or entry points, which are essentially related to the hypertext presentation style. Therefore, it differs from other related approaches like W3QL [17] WebSQL [20] and WebLog [18] which consider only structural information; or from the Tsimmis [12] system, which, on the ....

....to allow schematization [23] and thus also to understand the semantics of data. Instead, we believe that a schemabased approach is indeed possible. In fact, the availability of effective design tools for hypermedia has profoundly affected the design of Web sites. Several methodologies such as HDM [13] or RMM [16] provide to the Web site designer some more or less formal means to express data semantics. Based on these methodologies, research prototypes of Web site generators [11] and many commercial Web authoring environments are currently available and widely used. Therefore, most of the data ....

F. Garzotto, L. Mainetti, and P. Paolini. Hypermedia Design, Analysis and Evaluation Issues. Communications of the ACM, 38(8):74--86, 1995.

....then search for the appropriate meta tags, using an ordinary parser or tools specifically designed for wrapping HTML pages (e.g. 8, 19] and extract the string between them. 2. 2 Related Work Various methodologies have been recently presented in the context of hypermedia design, including HDM [18, 17], RMM [22] and OOHDM [28] All of them introduce models for the description of hypermedia applications, the essential constructs being the ones of entity, link and menu, the latter used to represent access structures. Both RMM and OOHDM organize the design process in specific phases: i) ....

....a single page. Moreover, it is difficult to reason about performance issues, since, for example, there is no notion of form, a construct very common in Web sites. At the same time, the absence of a concise description of the page structure makes restructurings more difficult. In this respect, HDM [18, 17] provides a first solution by distinguishing two different design activities: authoring in the large and authoring in the small. Authoring in the large aims at describing the overall organization and behaviour of a hypermedia application, whereas authoring in the small deals with specific details ....

F. Garzotto, L. Mainetti, and P. Paolini. Hypermedia design, analysis and evaluation issues. Communications of the ACM, 58(8):74--86, August 1995.

....to derive a common platform for such models. Our approach is based on the assumption that a logical model, based on page patterns and navigational paths can (and must) be the cornerstone of the design of a WbIS. This has already been the approach followed in several other proposals, e.g. ISB95] [GMP95]. In the sequel of this section, we will describe the minimum requirements we believe a logical model for a WbIS should fulfill and present the minimalistic approach we have taken towards this specifications. Our logical model consists of page patterns and link patterns between them. The page ....

F. Garzotto, L. Mainetti, P. Paolini. Hypermedia Design, Analysis and Evaluation Issues. In Communications of the ACM, vol. 38, no. 8, 1995

....such as links, structure, navigation, etc. Moreover, they should enhance the communication among the heterogeneous members of a hypermedia project, such as programmers, system analysts, software managers, and users, as well as content authors, librarians, musicians and graphic designers [20]. On the other hand, the methodologies should help engineers to manage the overall complexity of Web hypermedia development which requires a variety of activities, such as Web Engineering:Models and Methodologies 3 organizing the structure, choosing the contents and the presentation modality, ....

.... point of views of hypermedia applications and collects characteristics that are common to several applications of a given domain [21] On the contrary, authoring in the small refers to details about the specific application s organization and behavior, and depends on the implementation tools [20]. In the following two subsections we recall the main features of two models for authoring in the large, namely the Trellis Hypertext Reference Model and Hypertext Design Model. Other models will be described in the next section where methodologies for hypermedia development will be illustrated. ....

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F. Garzotto, L. Mainetti and P. Paolini, Hypermedia Design, Analysis and Evaluation Issues, Communicatin of the ACM, (August 1995) Vol. 38, No. 8.

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F. Garzotto, L. Mainetti, and P. Paolini. Hypermedia design, analysis and evaluation issues. CACM, 38(8):74--84, 1995.

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