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dsc2016-r's Issues

關卡檢測函數失效

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)

  • 請問同學,讓impurity改善最大的切點,是第幾個呢?同學可以用which.max函數作答。
  • 對應的切點的值是多少呢?請利用上一題的答案。

[Typo] 08-RDataMining-03-Classification > scripts > ml-05.R

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
  }))
}

課程建議

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

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")
Browse[1]>

`.get_path ` error in some Win10

.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。

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