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R 語言資料工程及探勘實務 (DSC2016) 課程教材
原始版
stopifnot(class(answer_05) == c("rpart"))
if (interactive()) {
stopifnot(local({
p <- predict(answer_05, df.test)[,"good"]
logloss(df.test$Class == "good", p)
}))
}
修正版
stopifnot(class(answer_05) == c("rpart"))
if (interactive()) {
stopifnot(local({
p <- predict(answer_05, df.test)[,"good"]
logloss(df.test$Class == "good", p) < 12
}))
}
在08-RDataMining-03-Classification
課程rpart.R之後,有兩個關卡檢測失效 (亂打都會過關)
which.max
函數作答。.initCourse.R
中的 .get_path
在某些 Windows10 電腦會失效,導致需要讀取 .csv 檔案的課程無法進入。
建議解法:修改每一門課程的中 initLesson.R
讀檔的部分。
在 02-DataObservation-02-MultiVariables
中 96%處有個錯字
實心的圓點散佈的程度”叫"空心圓點來得緊密
在X3-Challenge-02-PirateVisualization
中最後一關提示可以用hw()
參考解答
但輸入hw()後跳出以下錯誤訊息,並且進入debug mode
Error in file(con, "r") : 無法開啟連結
此外: Warning message:
In file(con, "r") : 無法開啟檔案 'NA' :No such file or directory
Called from: file(con, "r")
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