loops

问题 I have written some code in R. This code takes some data and splits it into a training set and a test set. Then, I fit a "survival random forest" model on the training set. After, I use the model to predict observations within the test set. Due to the type of problem I am dealing with ("survival analysis"), a confusion matrix has to be made for each "unique time" (inside the file "unique.death.time"). For each confusion matrix made for each unique time, I am interested in the corresponding

问题 I have written some code in R. This code takes some data and splits it into a training set and a test set. Then, I fit a "survival random forest" model on the training set. After, I use the model to predict observations within the test set. Due to the type of problem I am dealing with ("survival analysis"), a confusion matrix has to be made for each "unique time" (inside the file "unique.death.time"). For each confusion matrix made for each unique time, I am interested in the corresponding

问题 I have written some code in R. This code takes some data and splits it into a training set and a test set. Then, I fit a "survival random forest" model on the training set. After, I use the model to predict observations within the test set. Due to the type of problem I am dealing with ("survival analysis"), a confusion matrix has to be made for each "unique time" (inside the file "unique.death.time"). For each confusion matrix made for each unique time, I am interested in the corresponding

问题 I have written some code in R. This code takes some data and splits it into a training set and a test set. Then, I fit a "survival random forest" model on the training set. After, I use the model to predict observations within the test set. Due to the type of problem I am dealing with ("survival analysis"), a confusion matrix has to be made for each "unique time" (inside the file "unique.death.time"). For each confusion matrix made for each unique time, I am interested in the corresponding

问题 I am in a beginner Python programming class and we were to write a program that generates an item description, it's price, and the total. The program I originally wrote used LISTS which landed me a fat 0 for the assignment because apparently we were not to use lists on this assignment. Fortunately for me I get to rewrite it. SO, I am supposed to use a count-based iteration structure, I can use the “for” statement, or both the “for” and “while” statements. But NOT just the “while” statement

问题 I am in a beginner Python programming class and we were to write a program that generates an item description, it's price, and the total. The program I originally wrote used LISTS which landed me a fat 0 for the assignment because apparently we were not to use lists on this assignment. Fortunately for me I get to rewrite it. SO, I am supposed to use a count-based iteration structure, I can use the “for” statement, or both the “for” and “while” statements. But NOT just the “while” statement

问题 I've been struggling to follow Tom Urtis example of export data to txt file, where he extracts each row to a unique txt file. Toms code: Sub TextExport() Dim strPath$, x&, i%, txt$ strPath = ThisWorkbook.Path & "\" For x = 1 To Cells(Rows.Count, 1).End(xlUp).Row 'From row 1 to last row Open strPath & Cells(x, 1).Value & ".txt" For Output As #1 txt = "" For i = 1 To 3 'From Column 1 to 3 txt = txt & Cells(x, i).Value & vbTab Next i Print #1, Left(txt, Len(txt) - 1) Close #1 Next x MsgBox "The

问题 I've been struggling to follow Tom Urtis example of export data to txt file, where he extracts each row to a unique txt file. Toms code: Sub TextExport() Dim strPath$, x&, i%, txt$ strPath = ThisWorkbook.Path & "\" For x = 1 To Cells(Rows.Count, 1).End(xlUp).Row 'From row 1 to last row Open strPath & Cells(x, 1).Value & ".txt" For Output As #1 txt = "" For i = 1 To 3 'From Column 1 to 3 txt = txt & Cells(x, i).Value & vbTab Next i Print #1, Left(txt, Len(txt) - 1) Close #1 Next x MsgBox "The

问题 I want to create a new dataframe for each unique value of station. I tried below which gives me only last station data updated in the dataframe = tai_new.i tai['station'].unique() has 500 values. for i in tai['station'].unique(): tai_new.i = tai[tai_2['station'] ==i] Another approach is creating a separate list of tai_stations = tai['station'].unique() And then create two loops however, I do not want to type 500 (IF) conditions. 回答1: You can create dict of DataFrames by convert groupby object

问题 I have an inventory file that looks like this: [master] host01 [nl] host02 [us] host03 [satellites:children] nl us How can I get a list of groups that have satellites as their parent? I am looking for a solution that works similar to this: - debug: msg="{{ item }}" with_items: "{{ groups['satellites:children'] }}" Update: The only solution I was able to come with is this: - debug: {{ item }} with_items: "{{ groups }}" when: item != "master" and item != "satellites" and item != "all" and item