问题描述
说明
我正在尝试调整配方中的自定义参数，但我无法这样做。我的印象是，这只是在配方中调用 tune_grid()，然后将 variableID 与包含列 tune_grid() 的网格一起使用。
然而，这似乎不起作用，所以我想出了一个 reprex 来说明我的方法。请注意，tune() 甚至没有检测到调整参数。我在这里做错了什么？
我还尝试研究其他人是如何做到的，但我在这里找到的唯一一个接近我的问题的问题是 here，并且 library(tidyverse)
library(tidymodels)
#> Registered S3 method overwritten by 'tune':
#> method from
#> required_pkgs.model_spec parsnip
iris_splits <- vfold_cv(iris)
glmnet_recipe <-
recipe(formula = Species ~ Sepal.Length + Petal.Length,data = iris) %>%
step_mutate(Sepal.Length = round(Sepal.Length),digits = tune("digits")) %>%
step_zv(all_predictors()) %>%
step_normalize(all_predictors(),-all_nominal())
glmnet_spec <-
multinom_reg(penalty = 0,mixture = 0) %>%
set_mode("classification") %>%
set_engine("glmnet")
glmnet_workflow <-
workflow() %>%
add_recipe(glmnet_recipe) %>%
add_model(glmnet_spec)
glmnet_grid <- expand_grid(digits = c(0,1))
glmnet_tune <-
tune_grid(glmnet_workflow,resamples = iris_splits,grid = glmnet_grid)
#> Warning: No tuning parameters have been detected,performance will be evaluated
#> using the resamples with no tuning. Did you want to [tune()] parameters?
#> x Fold01: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> x Fold02: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> x Fold03: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> x Fold04: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> x Fold05: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> x Fold06: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> x Fold07: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> x Fold08: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> x Fold09: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> x Fold10: preprocessor 1/1: Error: Problem with `mutate()` column `digits`.
#> i `dig...
#> Warning: All models Failed. See the `.notes` column.
glmnet_tune$.notes[[1]]$.notes
#> [1] "preprocessor 1/1: Error: Problem with `mutate()` column `digits`.\ni `digits = tune(\"digits\")`.\nx `digits` must be a vector,not a call."
show_best(glmnet_tune)
#> Warning: No value of `metric` was given; metric 'roc_auc' will be used.
#> Error: All of the models Failed. See the .notes column.
的使用方式与预期一致。
Reprex
sessioninfo::session_info()
#> - Session info ---------------------------------------------------------------
#> setting value
#> version R version 4.0.5 (2021-03-31)
#> os Windows 10 x64
#> system x86_64,mingw32
#> ui RTerm
#> language (EN)
#> collate German_Germany.1252
#> ctype German_Germany.1252
#> tz Europe/Berlin
#> date 2021-06-15
#>
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#>
#> [1] C:/Users/Albert/Documents/R/win-library/4.0
#> [2] C:/Program Files/R/R-4.0.5/library
由 reprex package (v2.0.0) 于 2021 年 6 月 15 日创建
会话信息connect = require("ssh2-connect");
exec = require("ssh2-exec");
connect(
{
host: "XX.XX.XXX.XX",username: "XXXXXXXX",password: "XXXXX",},function (err,ssh) {
child = exec(
{
command:
"ssh -qtt username@host -- sudo /usr/bin/rootsh -i -u root; cd ..; cd u01/scripts/; cat saida.txt",ssh: ssh,stdout,stderr) {
console.log(stdout);
console.log(stderr);
console.log(err);
}
);
}
);
解决方法
配方步骤需要有一个 tunable S3 方法，用于您想要调整的任何参数，，例如 digits。
查看this article about creating your own recipe step，但我认为您不需要完全创建自己的配方步骤；您只需为您正在使用的步骤创建一个 tunable 方法，该方法位于 "Other step methods" 下。