我在两台机器和一台Linux服务器之间遇到了不一致的结果,直到我意识到修复种子有不同的效果 . 我在所有这些版本中运行不同的 R
版本,都在 3.3.0
之上 . 以下是示例:
Linux 1
> set.seed(10); rnorm(1)
[1] -0.4463588
> version
_
platform x86_64-pc-linux-gnu
arch x86_64
os linux-gnu
system x86_64, linux-gnu
status
major 3
minor 3.0
year 2016
month 05
day 03
svn rev 70573
language R
version.string R version 3.3.0 (2016-05-03)
nickname Supposedly Educational
Linux 2
> set.seed(10); rnorm(1)
[1] 0.01874617
> version
_
platform x86_64-pc-linux-gnu
arch x86_64
os linux-gnu
system x86_64, linux-gnu
status
major 3
minor 4.2
year 2017
month 09
day 28
svn rev 73368
language R
version.string R version 3.4.2 (2017-09-28)
nickname Short Summer
Mac OS
> set.seed(10); rnorm(1)
[1] 0.01874617
> version
_
platform x86_64-apple-darwin15.6.0
arch x86_64
os darwin15.6.0
system x86_64, darwin15.6.0
status
major 3
minor 4.3
year 2017
month 11
day 30
svn rev 73796
language R
version.string R version 3.4.3 (2017-11-30)
nickname Kite-Eating Tree
Windows
> set.seed(10); rnorm(1)
[1] 0.01874617
> version
_
platform x86_64-w64-mingw32
arch x86_64
os mingw32
system x86_64, mingw32
status
major 3
minor 4.1
year 2017
month 06
day 30
svn rev 72865
language R
version.string R version 3.4.1 (2017-06-30)
nickname Single Candle
Linux从同一个种子生成不同的随机数,因此在其上运行的脚本结果不能完全重现(取决于重新运行它们的操作系统,结果是否一致) . 这很烦人 .
我不知道这里发生了什么 . 尤其:
-
(1)这是
R
版本的问题还是更复杂的? -
(2)如何避免这种不一致的行为?任何帮助表示赞赏 .
EDIT 起源于@Jesse Tweedle答案(在新会话中Linux 1中的输出):
> set.seed(10); rnorm(1)
[1] -0.4463588
> set.seed(10); rnorm(1)
[1] -0.4463588
> set.seed(102); rnorm(1)
[1] 0.05752965
> set.seed(10, kind = "Mersenne-Twister"); rnorm(1)
[1] 0.01874617
> set.seed(10); rnorm(1)
[1] 0.01874617
> set.seed(102); rnorm(1)
[1] 0.1805229
1 回答
来自docs:
Random docs:
RNGversion can be used to set the random generators as they were in an earlier R version (for reproducibility).
所以在所有系统上尝试这个: