如何在 R 4.0.2 中安裝“mxnet”包

Question

下午好。 最近我遇到了安裝“mxnet”包的問題。 我已經嘗試了幾種代碼變體，但它們都沒有真正安裝這個包。

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)

並得到這樣的錯誤：

錯誤：“mxnet”的包或命名空間加載失敗：包“mxnet”是在 R 4.0.0 之前安裝的：請重新安裝

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

然后我輸入library(mxnet)並得到第 1 頁中的錯誤消息。

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)

執行此代碼后，我收到以下錯誤：

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 中還沒有安裝mxnet包。

我已經熟悉了 R 中的 MXNet 包安裝，但是那里給出的一些說明並沒有帶來任何幫助。 其他與我的代碼不謀而合。

你能告訴我如何成功安裝這個包嗎？ 我應該運行什么代碼？

感謝你的付出。

Answer 1

由於您使用的 R 版本沒有可用的預構建 MXNet 二進制文件，因此您需要按照從源代碼構建的說明進行操作。 請參閱https://mxnet.apache.org/versions/1.7.0/get_started/build_from_source

您可以按照這些說明進行操作，但如果您願意，可以使用 1.8.0rc2 版本存檔而不是 1.7.0。

此問題與R重復：'mxnet' 的命名空間加載失敗：在 R 4.0.0 之前安裝了包 'mxnet'：請重新安裝它，但不能將其標記為重復，因為沒有可接受的答案。