stedy/machine-learning-with-r-datasets

Formatted datasets for Machine Learning With R by Brett Lantz

machine-learning-with-r-datasets's Issues

Error chapter3

hi , i have an error in chapter 3.
....
wbcd_n <- as.data.frame(lapply(wbcd[2:31], normalize))
View(wbcd_n)
summary(wbcd_n$area_mean)
wbcd_train <- wbcd[1:469, ]
wbcd_test <- wbcd[470:569, ]
wbcd_train_labels <- wbcd[1:469, 1]
wbcd_train_labels_n <- as.numeric(wbcd_train_labels)
wbcd_test_labels <- wbcd[470:569, 1]
wbcd_test_labels<-as.numeric(wbcd_test_labels)
wbcd_test_pred <- knn(train = wbcd_train, test = wbcd_test, cl = wbcd_train_labels_n, k= 21)

Error in knn(train = wbcd_train, test = wbcd_test, cl = wbcd_train_labels_n, :
NA/NaN/Inf in foreign function call (arg 6)
In addition: Warning messages:
1: In knn(train = wbcd_train, test = wbcd_test, cl = wbcd_train_labels_n, :
NAs introduced by coercion
2: In knn(train = wbcd_train, test = wbcd_test, cl = wbcd_train_labels_n, :
NAs introduced by coercion

i convert variable to numeric but error not resolve.
do you have idea for resolving this error?
tnx.

Are these datasets taken from packt publishing?

I'm having mixed results with some of the datasets you've provided. They seem to give different results than in the book. I'm just wondering if you've uploaded datasets here as-is from packt publishing or if you've changed them?

ML with R datasets - download

Hi Sir,

Thanks for collating all these datasets.

I am new to ML and not sure how do I download these datasets onto my Mac so that i can practise the R codes.

Can you show me please?

Thanks in advance

Tian

Update your readme.md

Not a big issue, just make sure it's consistent with the new datasets you uploaded (insurance.csv and others).

Source of the Dataset

Hi,

Great job on downloading the dataset and reformatting them to match the format of the Machine Learning with R by Brett Lantz.

Could you please provide the link to the public domain you got the dataset from?