Richly interlinked, machine-understandable data constitute the basis for the Semantic Web. We provide a framework, CREAM, that allows for creation of metadata. While the annotation mode of CREAM allows to create metadata for existing web pages, the authoring mode lets authors create metadata -- almost for free -- while putting together the content of a page. As a

Abstract. This paper illustrates the OntoWeaver modelling approach, which relies on a set of comprehensive site ontologies to model all aspects of dataintensive web sites and thus offers high level support for the design and development of data-intensive web sites. In particular, the OntoWeaver site ontologies comprise two components: a site view ontology and a presentation ontology. The site view ontology provides meta-models to allow for the composition of sophisticated site views, which allow end users to navigate and manipulate the underlying domain databases. The presentation ontology abstracts the look and feel for site views and makes it possible for the visual appearance and layout to be specified at a high level of abstraction. 1

The success of the Semantic Web crucially depends on the easy creation of ontology-based metadata, viz. semantic annotation. We provide a framework, CREAM, that allows the creation of semantic annotation on the Shallow and the Deep Web. Hence, it

Abstract. This paper presents OntoWeaver-S, an ontology-based infrastructure for building knowledge portals. In particular, OntoWeaver-S is integrated with a comprehensive web service platform, IRS-II, for the publication, discovery, and execution of web services. In this way, OntoWeaver-S supports the access and provision of remote web services for knowledge portals. Moreover, it provides a set of comprehensive site ontologies to model and represent knowledge portals, and thus is able to offer high level support for the design and development process. Finally, OntoWeaver-S provides a set of powerful tools to support knowledge portals at design time as well as at run time. 1

Abstract. With the explosive emerged Web services, the Web becomes a world of information and applications. So portals whose goal is presenting a structured view onto the Web should provide users with a single point access to multiple types of not only information but also services. Recently, many systems have been developed using ontology-driven approaches to automatically generate and manage Web portals. However, all of them lack the integration of Web services. In this paper, we describe SPortS, an OWL-DL(Web Ontology Language-Description Logics) based portal generation system that integrates semantic Web services into generated portals at the presentation level, the data level and the function level. We present the portal generation process, the query decomposition and the service recommendation algorithms through which semantic Web services are integrated tightly into the generated portal. 1

Building a data-intensive web site is a complex task. Ad hoc rapid prototyping approaches easily lead to unsatisfactory results, e.g. poor maintainability and extensibility. To address this problem, a number of model-based approaches have been proposed, which attempt to simplify the design and development of data-intensive web sites. However, these approaches typically lack expressive meta-models and, as a result, suffer from a number of limitations, e.g. the lack of appropriate support for the creation of complex user interfaces, for the specification of layouts and presentation styles, and for customization. In this paper we describe a new software tool OntoWeaver, which uses ontologies to drive the design and development of data-intensive web sites. OntoWeaver overcomes the problems of current approaches by providing a site view ontology, a presentation ontology, and a customization framework. Specifically, the site view ontology provides fine-grained modelling support for the creation of complex user interfaces and navigation structures. The presentation ontology captures the features of layouts and presentation styles of user interface elements. These two explicit meta-models allow the target web site to be represented in a declarative and re-usable format, thus enabling high level support for design, maintenance, and customization. The customization framework exploits this advantage and provides comprehensive customization support for the target web site at design as well as run time.

Abstract. We introduce an online knowledge base for semantic representation and annotation of a world heritage site in danger. For this purpose we designed ontology inside the protégé tool with multiple metadata-based schemas to represent a knowledge base for heritage buildings and to annotate heterogeneous data sources. The ontology schema also references multiple bibliographies so it can gather the complex history of each building, or multiple coordinated locations of each building. We built an ontology-driven Website generation system “Bam3DCG ” based on the Resource Description Framework graph exported from Protégé, and discuss practical problems for this type of system.

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Ontology-based web portal generation and management is an active field of research and development. Recently, many systems have been developed. However, many of them lack the integration of web services which may provide more dynamic information and richer functionalities. In this paper, we describe SPortS, an OWL-DL based portal generation system that integrates semantic web services into generated portals at the presentation level, the data level and the function level. We present the portal generation process, the query decomposition and the service recommendation algorithms through which semantic web services are integrated tightly into the generated portal.

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