Wen-Chen Sun

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Given the ever-increasing scale and diversity of information and applications on the Internet, improving the technology of information retrieval is an urgent research objective. Retrieved information is either semi-structured or unstructured in format and its sources are extremely heterogeneous. In consequence, the task of efficiently gathering and(More)
Certificates play a critical role in mobile applications. By exploiting certificates, mobile applications are capable of accessing the trading or other m-commerce services (mobile commerce) on mobile environments. WTLS (Wireless Transport Layer Security) [1], WPKI (Wireless Public-Key Infrastructure) [3], WIM (Wireless Identity Module) [5], and WMLScript(More)
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