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MOTIVATION Protein-protein interactions play critical roles in biological processes, and many biologists try to find or to predict crucial information concerning these interactions. Before verifying interactions in biological laboratory work, validating them from previous research is necessary. Although many efforts have been made to create databases that(More)
We study the validation of XML documents when they are updated in XML databases. An XML document can be verified by checking against an XML Schema, which contains structure and type information of XML documents. However, most of XML database systems just validate the whole XML document, but can not validate parts of it. If updates are very frequent, then(More)
Recently, several researches have been performed for updating XML documents[1][2][12] stored in databases. These researches define update operations and resolve some semantic problems. However, because the update operations are usually validated after execution, conflicts can occur among them. Furthermore, in many studies for updating, they just validate(More)
In ubiquitous computing, clients should be able to use any kinds of services whenever and wherever they are. Service has the same quality without concerned with characteristics such as the status and location of services or devices. Because the characteristics are dynamically changed, a sub-network is difficult to reflect all the changes. So, there are(More)
 Emerging ubiquitous computing network is expected to consist of a variety of heterogeneous and distributed devices. And web services technologies that support platform independent application integration cope with limitation of legacy middleware technologies based on distributed object. Therefore it could be software infrastructure for ubiquitous(More)
In this paper we investigate a trend analysis service using Semantic Web technology in a news domain. The trend analysis service can provide more intelligent answers rather than the answer given in current news search engines since it can analyze the passage of time of news and the relation among news. In order to provide the trend analysis service, the(More)