我们知道对符合二项分布的模型进行抽样的时间复杂度也为O(1),因为如果只有两种情况A,B时,设他们出现的概率分别为 0.2,0.8,我们用累积分布的方法,小于0.2就是A, 大于就是B,只需比较一次,所以复杂度也是O(1),这是二项分布抽样的情况。 alias method就是把这两种方法结合起来。 仍然以本文一开始提出的例子为例。
随机采样0~1之间的一个概率值,如果小于accept[i],则采样i,如果大于accept[i],则采样alias[i];这一部分源码在alias_sample; 下面附上具体的源码: importnumpyasnpdefcreate_alias_table(area_ratio):""" area_ratio[i]代表事件i出现的概率 :param area_ratio: sum(area_ratio)=1 :return: accept,alias "...
Alias sample(别名采样) 赖卜集 / 1 人赞同了该文章 Alias sample(别名采样)www.cnblogs.com/arachis/p/alias_sample.html blog.csdn.net/haolexiao 发布于 2019-11-15 09:23 Alias 3D 渲染 编程 赞同1添加评论 分享喜欢收藏申请转载 ...
sample_alias_table Samples an alias table. An alias table is a data structure for efficient computation of a weighted selection. This compound is usedrandomize_selection_by_probabilitiesand is meant to be used together withbuild_alias_table— see that node for more extensive documentation of the ...
所以复杂度也是O(1)。alias method就是把这两种方法结合起来. 首先我们把原概率分布乘以N(为后面的拼接做准备),这里是N=4。得到:0.4,0.8,1.2,1.6。 然后我们把它拼成等概率分布和二项不等概率分布: 注意拼接的过程中,最多每一列最多有两种颜色。乘以N就保证了一定可以存在这样的拼法。具体证明见引用[1],图...
alias dnginx='docker exec -it nginx /bin/sh' alias dphp='docker exec -it php /bin/sh' alias dphp56='docker exec -it php56 /bin/sh' alias dphp54='docker exec -it php54 /bin/sh' alias dmysql='docker exec -it mysql /bin/bash' alias dredis='docker exec -it redis /bin...
Breadcrumbs dnmp / bash.alias.sampleTop File metadata and controls Code Blame 91 lines (85 loc) · 1.83 KB Raw # dnmp alias alias dnginx='docker exec -it nginx /bin/sh' alias dphp='docker exec -it php /bin/sh' alias dphp56='docker exec -it php56 /bin/sh' alias dphp54='docker...
Help > Dynamo Resources > Dynamo For Alias Help > Dynamo Resources > Dynamo Help Help > Sample Files Help > Support Center Help > What’s New Help > What's New Shelf Help > What's New Highlights Help > Tool Locator Help > What’s This? Help > Current Tool Help Help > Modifier Key...
Breadcrumbs phper-docker / bash.alias.sampleTop File metadata and controls Code Blame 120 lines (111 loc) · 2.35 KB Raw # dnmp alias alias dnginx='docker exec -it nginx /bin/sh' alias dphp70='docker exec -it php70 /bin/sh' alias dphp71='docker exec -it php71 /bin/sh' alias...
Visual Basic Public Property MultiSampleAntiAlias As Boolean C# public bool MultiSampleAntiAlias { get; set; } C++ public: property bool MultiSampleAntiAlias { bool get(); void set(bool value); } JScript public function get MultiSampleAntiAlias() : boolean public function set MultiSampleAntiAl...