Questions tagged [kaggle]

Kaggle is an online community for data scientists and machine learning practitioners owned by Google.

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13 votes
4 answers
3k views

Why SMOTE is not used in prize-winning Kaggle solutions?

Synthetic Minority Over-sampling Technique SMOTE, is a well known method to tackle imbalanced datasets. There are many papers with a lot of citations out-there claiming that it is used to boost ...
Carlos Mougan's user avatar
30 votes
3 answers
21k views

Why do we convert skewed data into a normal distribution

I was going through a solution of the Housing prices competition on Kaggle (Human Analog's Kernel on House Prices: Advance Regression Techniques) and came across this part: ...
PixelPioneer's user avatar
11 votes
3 answers
20k views

Why does Gradient Boosting regression predict negative values when there are no negative y-values in my training set?

As I increase the number of trees in scikit learn's GradientBoostingRegressor, I get more negative predictions, even though there are no negative values in my ...
user2592989's user avatar
3 votes
2 answers
4k views

one-hot-encoding categorical data gives error

I am currently working on the Boston problem hosted on Kaggle. The dataset is nothing like the Titanic dataset. There are many categorical columns and I'm trying to one-hot-encode these columns. I'...
Andros Adrianopolos's user avatar