Posts by Fabio • 81 points
7 posts
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3
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answers145
viewsQ: Operations with Data Frame
I need to do as the image below. What would it look like? I’ve already managed to isolate lines that are just zeros in all columns using the subset(Base,…
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answer59
viewsA: Find metrics by R
I did the manual process in solving the problem. I used Weka as a base to calculate the weights. """ v1 v2 v3 v4 previsoes 0 1 0 1681 36 1 112 171 """ # Desmembrando a Matriz de Confusão v1 =…
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votes1
answer323
viewsQ: SVM model - regularisation and cost factors
In the SVM model (kernel: linear, regularisation factor: 0.1, cross validation k=10). Would the regularization factor and cost factor be the same? No help of R informs only the argument cost.…
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2
votes2
answers5826
viewsQ: Use of Seed in R
About the Seed, I don’t understand when to use: seed(1), seed(123), seed(12345). What would be the difference between them?
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1
votes1
answer139
viewsQ: Cross Validation following the dataset
Regarding cross validation, I would like to know if when we use the command below the system makes a random choice of data or sequential. I am looking for a way to use the data order to generate the…
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0
votes1
answer59
viewsQ: Find metrics by R
I cannot find in R the same metrics that are presented by the graphical interface (see below). Of all the metrics, only the accuracy (CA) I was able to find. Is there any step by step or place where…
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1
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answer350
viewsQ: script search - python
The problem is I can’t separate the arquivo_novo of /root/arquivo_novo, as indicated below. I only need the "new file" to be able to enter the LOOP IF and the system returns /root/arquivo_novo and…