Hongxian Zhang

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For the purposes of information retrieval, users must find highly relevant documents from within a system (and often a quite large one comprised of many individual documents) based on input query. Ranking the documents according to their relevance within the system to meet user needs is a challenging endeavor, and a hot research topic-there already exist(More)
This paper reviews the principle of A* algorithm in 2D game. In order to improve the path-finding efficiency and avoid using A* directly because which may bring much more space, we use copied map to assist A* to refine the path-finding process. The generation of copied map, the main data structures, and the workflow are given in this paper. At last, we(More)
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