如何在 R 4.0.2 中安装“mxnet”包

Question

下午好。 最近我遇到了安装“mxnet”包的问题。 我已经尝试了几种代码变体，但它们都没有真正安装这个包。

1.

cran <- getOption("repos")
   cran["dmlc"] <- "https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/15"
options(repos = cran)
  install.packages("mxnet")
  library(mxnet)

并得到这样的错误：

错误：“mxnet”的包或命名空间加载失败：包“mxnet”是在 R 4.0.0 之前安装的：请重新安装

install.packages("https://github.com/jeremiedb/mxnet_winbin/raw/master/mxnet.zip", repos = NULL)

然后我输入library(mxnet)并得到第 1 页中的错误消息。

3.

cran <- getOption("repos")
cran["dmlc"] <- "https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23"
options(repos = cran)

library(devtools)
require(devtools)

install_version("DiagrammeR", version = "0.9.0", repos = "http://cran.us.r-project.org")
require(DiagrammeR)

install.packages("mxnet")
library(mxnet)

执行此代码后，我收到以下错误：

ERROR: failed to lock directory 'C:/Users/user/Documents/R/win-library/4.0' for modifying
Try removing 'C:/Users/user/Documents/R/win-library/4.0/00LOCK-rlang'
Error: Failed to install 'unknown package' from URL:
  (converted from warning) installation of package ‘rlang’ had non-zero exit status
> install.packages("mxnet")
Warning in install.packages :
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib/PACKAGES.rds': HTTP status was '404 Not Found'
Warning in install.packages :
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib/PACKAGES.gz': HTTP status was '404 Not Found'
Warning in install.packages :
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib/PACKAGES': HTTP status was '404 Not Found'
Warning in install.packages :
  unable to access index for repository https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib:
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib/PACKAGES'
Installing package into ‘C:/Users/user/Documents/R/win-library/4.0’
(as ‘lib’ is unspecified)
Warning in install.packages :
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib/PACKAGES.rds': HTTP status was '404 Not Found'
Warning in install.packages :
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib/PACKAGES.gz': HTTP status was '404 Not Found'
Warning in install.packages :
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib/PACKAGES': HTTP status was '404 Not Found'
Warning in install.packages :
  unable to access index for repository https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib:
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/src/contrib/PACKAGES'
Warning in install.packages :
  package ‘mxnet’ is not available (for R version 4.0.2)
Warning in install.packages :
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/bin/windows/contrib/4.0/PACKAGES.rds': HTTP status was '404 Not Found'
Warning in install.packages :
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/bin/windows/contrib/4.0/PACKAGES.gz': HTTP status was '404 Not Found'
Warning in install.packages :
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/bin/windows/contrib/4.0/PACKAGES': HTTP status was '404 Not Found'
Warning in install.packages :
  unable to access index for repository https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/bin/windows/contrib/4.0:
  cannot open URL 'https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/23/bin/windows/contrib/4.0/PACKAGES'    

最后，RStudio 中还没有安装mxnet包。

我已经熟悉了 R 中的 MXNet 包安装，但是那里给出的一些说明并没有带来任何帮助。 其他与我的代码不谋而合。

你能告诉我如何成功安装这个包吗？ 我应该运行什么代码？

感谢你的付出。

Answer 1

由于您使用的 R 版本没有可用的预构建 MXNet 二进制文件，因此您需要按照从源代码构建的说明进行操作。 请参阅https://mxnet.apache.org/versions/1.7.0/get_started/build_from_source

您可以按照这些说明进行操作，但如果您愿意，可以使用 1.8.0rc2 版本存档而不是 1.7.0。

此问题与R重复：'mxnet' 的命名空间加载失败：在 R 4.0.0 之前安装了包 'mxnet'：请重新安装它，但不能将其标记为重复，因为没有可接受的答案。