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Our research interests lie in the area of computer network systems and applications. The primary objectives of our research are 1) to understand the fundamental properties of mobile and wireless networks; and 2) to investigate feasible solutions that facilitate more enjoyable network experience for end users.

Specifically, we research networked sensing systems in hostile environments. We perform analytical study to model network mobility and design fault-tolerant mechanisms to facilitate reliable sensing data harvesting in challenged environments. Moreover, we prototype our research results and conduct real-world deployment. For instance, we have deployed the YushanNet system for hiker tracking, search, and rescuing in Yushan National Park, and the system will soon become a regular service of the national park.

In addition, we investigate emerging social computing systems with a focus on human computation. The rationale behind human computation is to outsource certain steps of computational processes to humans and solve the problems that are intuitive to humans, but computer technologies cannot solve completely by far. We develop a generic analysis framework to investigate intrinsic properties of such systems, and conduct a set of system strategies to improve its system performance in terms of efficiency and quality. Moreover, we have implemented and verified the designed strategies in real-world systems; and we have released the source codes and game traces to the research community.

My ongoing research focuses on human-centric mobile sensing system and its applications. We intend to apply our research results to real-world networked sensing systems, such as participatory sensing for urban profiling, mobile human computation, and context-aware pervasive systems. Moreover, we wish to incorporate our research results with emerging social computing systems as a whole to facilitate cyber-physical social network systems in the future.