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投稿时间:2017-03-09
投稿时间:2017-03-09
中文摘要: 无论是城市交通导航还是游戏人物导航,最短路径的有效搜索都是人们最为关注的部分。A*算法是目前在导航方面较为有效的最短路径算法。对传统的A*算法,Aε算法,AlphaA*算法以及添加启发式算法进行了对比分析,提出了一种改进方法A*+算法,即在原有算式上添加父节点启发式,并计算临界值筛选候选节点。实验结果表明,该方法节点排查能力明显优化,搜索效率得到提高。
Abstract:Whether in the traffic navigation or game path-navigation field,the efficiency of searching shortest paths is one that receives most concern.Now A*algorithm is a more efficient shortest path algorithm in the navigation field.Through the comparison and analysis of the varieties based on A* algorithm-Aε,AlphaA* and new heuristic algorithm,an improved method,A*+ is put forward,namely,adding a new heuristic in the original formula and calculating the threshold to filter candidate nodes.
keywords: A* algorithm Aε algorithm Alpha A* algorithm A*+ algorithm new heuristic algorithm shortest path
文章编号:20182016 中图分类号: 文献标志码:
基金项目:上海市自然科学基金(15ZR1418500);上海市科学技术委员会地方院校能力建设项目(15110500700)。
引用文本:
魏为民,陆致静,叶语亭.一种基于A*算法改进的最短路径搜索方法[J].上海电力大学学报,2018,34(2):180-184.
WEI Weimin,LU Zhijing,YE Yuting.Improvement and Contrast Analysis of Variants of A* Algorithm[J].Journal of Shanghai University of Electric Power,2018,34(2):180-184.
魏为民,陆致静,叶语亭.一种基于A*算法改进的最短路径搜索方法[J].上海电力大学学报,2018,34(2):180-184.
WEI Weimin,LU Zhijing,YE Yuting.Improvement and Contrast Analysis of Variants of A* Algorithm[J].Journal of Shanghai University of Electric Power,2018,34(2):180-184.