Bokuk Park

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This paper proposes a new method called Virtual Run for extracting the representative trajectories from a set of similar trajectories by readjusting the sequence of movements of vehicles. This method uses convex hull and Euclidean minimum spanning tree to move the trajectory sets, so that it can generate the representative trajectories. Those representative(More)
Mining moving patterns from object trajectories is an crucial task for understanding movement characteristics. In this study, we propose a novel trajectory analysis method to detect split-and-merge patterns based on a virtual running method. A virtual run is a rearranged moving order of objects that minimizes the cost function and is used to perform(More)
Programming contests such as the International Olympiad for Informatics (IOI) and the International Collegiate Programming Contest (ICPC) are effective for encouraging young and bright programmers. These contests require contestants to complete a few tasks (between three and nine) related to algorithmic problems within a limited time. For this study, we(More)
A time series is a sequence of data sequentially observed over time. It contains important information such as stock, futures, foreign exchange rate, brainwave, heart rate, weather change, wind speed, air temperature and advective flux. Analyzing time series data is essential to estimate the future and understand scientific characteristics inherent in many(More)
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