贪婪最佳优先搜索 Greedy Best-First Search 一、算法原理 二、算法应用 三、算法性能 一、算法原理 所谓贪婪,即只扩展当前代价最小的节点(或者说离当前节点最近的点)。这样做的缺点就是,目前代价小,之后的代价不一定小,如果解在代价最大的点,那么按照贪婪最佳优先算法,可能就找不到这个解,然后就会陷入死循环。
2. 什么是best-first search? 就是每次都挑目前看起来最好的那个action走。 greedy search就是100%依靠目前看起来哪个action最好就走哪个。 A*就是除了这个估计值之外,我们还加上目前为止的cost。 uniform search也是best-fit search的一个特例,它相当于是f(n)=g(n) 所以A*可以看作是greedy+uniform cost,它...
Greedy Best First Search算法在没有障碍物的时候,规划A到的B的路径速度远远快于BFS。具体效果如下: 但是当图中存在障碍物时,Greedy Best First Search算法找到的路径很容易存在绕路情况。 总而言之: Dijkstra's算法可以保证我们找到一条最短路径,但是耗时比较久。而Greedy Best First Search算法速度最快,但无法保证...
It is based on expanding partial solutions in a systematic way, prioritizing promising ones, which reduces the search space we have to traverse during the search. The category constraints help in reducing the space we have to explore even further. We implement an algorithm that computes the ...
A.A* Search A* 搜索B.Best-first Search 最佳优先搜索C.Bidirectional search 双向搜索D.Breadth-first search 宽度优先搜索E.Depth-first search 深度优先搜索F.Depth-limited search 深度受限搜索G.Greedy Search 贪婪搜索H.Uniform-cost search 一致代价搜索 相关知识点: 试题来源: 解析 C,D,E,F,H 反馈...
A detailed description of Type-GBFS can be found in (Xie et al. 2014).Type-GBFS and -GBFS with = 0.5 both spend half their search effort on exploration. However, the distribution of types of the explored nodes is very different. Figure 3 shows the frequency of explored node types for...
At the beginning of the Mexican Revolution in 1913, greedy bandit Juan Miranda (Rod Steiger) and idealist John H. Mallory (James Coburn), an Irish Republican Army explosives expert on the lam from the British, fall in with a band of revolutionaries plotting to strike a national bank. When...
Arno (Cesar Romero) plots to get his greedy hands on it. Slapstick hijinks ensue as Dexter and his pals try to thwart the evil Arno before he can use the invisibility spray to rob a bank. Released: 1972 Directed by: Robert Butler Also ranks #26 on The Best Disney Science Fict...
图的遍历方法一般有两种，第一种是深度优先遍历（Depth First Search),也有称为深度优先搜索，简称为DFS...
A、A* Search A*搜索 B、Best-first Search 最佳优先搜索 C、Bidirectional search 双向搜索 D、Breadth-first search 宽度优先搜索 E、Depth-first search 深度优先搜索 F、Depth-limited search 深度受限搜索 G、Greedy Search 贪婪搜索 H、Uniform-cost search 一致代价搜索 答案:CDEFH 手机看题 你可能感兴趣的...