An Infrastructure for Building Semantic Web Portals

One important task of semantic web portals is to offer both end users and applications a seamless access to knowledge contained in heterogeneous data sources in specific user communities. As such it is important to ensure that i) high quality metadata are extracted from heterogeneous sources in an automated manner and ii) comprehensive querying facilities are provided thus enabling knowledge to be accessed as easily as possible. However, current semantic web portals have only marginally addressed these issues. In this paper, we present our work, the KMi semantic web portal infrastructure, which pays special attention to these issues. Central to our infrastructure are three components: i) an automated metadata extraction tool, ASDI, which supports the extraction of high quality metadata from heterogeneous sources, ii) an ontology-driven question answering tool, AquaLog, which makes use of the domain specific ontology and the semantic metadata extracted by ASDI to answers questions in na...

• Type: Conference
• Year: 2006
• Where: CAISE
• Authors: Yuangui Lei, Vanessa Lopez, Enrico Motta
• Keywords: CAISE 2006, Current Semantic Web, Heterogeneous Sources, Information Management, Semantic Web Portal