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Semantic mappings between relational database and ontology are very useful in ontology-based relational data integration system. However, managing those semantic mappings is an arduous work in an open and dynamic environment. Aiming at facilitating the work of managing semantic mappings, a model named view graph is proposed in this paper. View graph retains the semantics discovered during the process...
With the development of data collection technology, effective visualization tools are needed urgently to understand the abundant multidimensional and multivariate data and information in the science, engineering and commerce fields. Star Coordinates is a traditional multivariate data visualization technique, but there are some limitations of it. In the paper we propose the advanced star coordinates...
With the heavily increase of information cognitive burden, it is urgent for us to find effective visualization tools to grasp the abundant multidimensional and multivariate information in the science, engineering and commerce fields. Star coordinates is a traditional multivariate data visualization technique, with some limitations, e.g. the loss of information, the poor result of visualization and...
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