Question

以下是我在Rstudio中运行的代码：

library(caret)
set.seed(1)
demo <-data.frame(x1 = runif(100),x2 <- rnorm(100),y <- rbinom(100,1,0.3))
modelout <- try(train(y~.,data = demo,
                  method = "AMORE"),silent = FALSE)

输出如下：

Loading required package: AMORE
Attaching package: ‘AMORE’
The following object is masked from ‘package:caret’:
   train
Error in order(x$nhid) : argument 1 is not a vector
In addition: There were 50 or more warnings (use warnings() to see the first 50)

警告消息与“AMORE”包中的“train”功能有关。如果我输入

>train

运行上面的代码后，在命令窗口中的

，我从AMORE包中得到了这个函数的主体。

function (net, P, T, Pval = NULL, Tval = NULL, error.criterium = "LMS", 
   report = TRUE, n.shows, show.step, Stao = NA, prob = NULL, 
   n.threads = 0L) 
{...
}
<environment: namespace:AMORE>

我搜索了我的路径，显然AMORE出现在插入符号之前：

>search()

[1] ".GlobalEnv"        "package:AMORE"     "package:caret"     "package:ggplot2"           "package:lattice"  
 [6] "tools:rstudio"     "package:stats"     "package:graphics"  "package:grDevices" "package:utils"    
[11] "package:datasets"  "package:methods"   "Autoloads"         "package:base"

以下是我的会话信息：

R version 3.0.2 (2013-09-25)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] AMORE_0.2-14    caret_6.0-21    ggplot2_0.9.3.1 lattice_0.20-24

loaded via a namespace (and not attached):
[1] car_2.0-19         codetools_0.2-8    colorspace_1.2-4   compiler_3.0.2     dichromat_2.0-0   
[6] digest_0.6.4       foreach_1.4.1      grid_3.0.2         gtable_0.1.2       iterators_1.0.6   
[11] labeling_0.2       MASS_7.3-29        munsell_0.4.2      nnet_7.3-7         plyr_1.8          
[16] proto_0.3-10       RColorBrewer_1.0-5 reshape2_1.2.2     scales_0.2.3       stringr_0.6.2     
[21] tools_3.0.2

我应该如何解决这个问题，以便R在“插入符号”中使用“训练”功能而不是“AMORE”中的“训练”功能？感谢您的时间，并提前感谢您的帮助。

JT

Answer 1

指定命名空间。

caret::train()

library(caret)
set.seed(1)
demo <-data.frame(x1 = runif(100),x2 <- rnorm(100),y <- rbinom(100,1,0.3))
modelout <- try(caret::train(y~.,data = demo,
                  method = "AMORE"),silent = FALSE)

Answer 2

我通过创建该函数的副本来解决它。是的，这是命名空间问题。如果我重新定义了一个函数trainc＆lt; - caret :: train，并在代码中使用trainc而不是train，问题就解决了。只是好奇为什么不能直接使用插入符号::火车！感谢SethB的帮助。

在AMORE中使用相同的功能掩盖了插入符号中的列车功能，不能使用插入符号使“AMORE”方法工作

2 个答案: