Johannes K. Chiang

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The various museum services that make up the ubiquitous computing concept have developed with the rapid growth of wireless Internet environments and mobile devices. The major purpose of this research is to provide a context-aware ubiquitous museum application service environment to users by utilizing sensors and mobile devices currently available in the(More)
Data Mining is one of the most significant tools for discovering association patterns that are useful in for health services, Customer Relationship Management (CRM) etc. Yet, there are some drawbacks in conventional mining techniques. Since most of them perform the plain mining based on predefined schemata through the data warehouse as a whole, a re-scan(More)
Data Mining is considered as a power tool to discover knowledge such as in form of association rule that is useful in business domains for medical diagnosis, Customer Relationship Management (CRM) etc. Yet, there are two drawbacks in conventional mining. Since most of the techniques performs plane-mining based on priori-defined patterns in the(More)
It is very difficult to predict long-term network traffic behavior in a large-scale network such as Internet. Due to the competition among ISPs and Internet exchanges (IXs), Internet users always experience different kinds of QoS, that effectively affect the network traffic. Accordingly, this paper designs a traffic model in the IX environment based on(More)
Long-term preservation (LTP) is an appealing new research area. Its goal is to make the sustainability of archives lasting for a foreseeable enough time. The efforts are primarily hampered by challenges such as missing of stands, formal methodology and workflow management during archiving process. Further deficits are failing to keep interoperation among(More)
" Ubiquitous " represents a concept which means ―God exists everywhere. At the era of information technology, by using all kinds of information products and networks, the word represents that the ubiquitous information ideal world can be realized. However, introducing new technology could also cause other issues because of the impractical lead-in plan.(More)
Data Mining is one of the most significant tools for discovering association patterns that are useful for many knowledge domains. Yet, there are some drawbacks in existing mining techniques. The three main weaknesses of current data-mining techniques are: 1) re-scanning of the entire database must be done whenever new attributes are added because current(More)