Gunar Fiedler

Website modeling and website generation

Websites become more often based on data warehouse architectures. Our group uses the website modeling language SiteLang [TD01]. This language has reached a maturity that allows simple application and goes far beyond what other approaches can handle: It is powerful, consistent, has a well-developed theory fundament [Tha00a,Tha00b], does not allow to create confusing specifications, uses a powerful methodology [ST00,Tha03] applied in three dozen projects, and has a playout and layout specification supporting database-backed generation of websites.

Towards Linguistic Foundations of Content Management

Content and content management have become buzzwords. The notions are neither well-defined nor used in a standard way. Content objects are complex structured. Different users may require different content object sets. Content object sets may vary depending on the actual task portfolio, depending on the context of the user, and on the technical environment. Therefore, content management must combine generation, extraction and storage of complex object, must support complex workflows and must be adaptable to the actual use and users environment and requirements. Content may be considered under three different points of view: data computed from an information system, general concepts that are illustrated or described by the content, and, finally, a large variety of user interpretation. Since all three points of view should not be mixed with each other we propose to separate them and treat content management from the point of view of syntax, from the point of view of semantics and from the point of view of user worlds.

State- and object oriented specification of interactive VoiceXML information services

Usually internet information services are based on HTML, but now more and more phone speech information services appear. In February 2003 VoiceXML 2.0 was published by the VoiceXML Forum to bring the advantages of web-based development and content delivery to interactive voice response information services. Such services include content generation, navigation and functionality support which has to be modeled in a consistent way. This document describes a SiteLang oriented specification approach based on media objects as well as movie concepts for story and interaction spaces. This results in a systematic simplification of the speech application development process. We have created a VoiceXML based information system prototype for an E-Government system which will be used as an example within this paper.