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user781486
  • Member for 5 years, 10 months
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36 votes
3 answers
37k views

Is it necessary to normalize data for XGBoost?

32 votes
2 answers
25k views

When should one use L1, L2 regularization instead of dropout layer, given that both serve same purpose of reducing overfitting?

16 votes
5 answers
9k views

Why does adding a dropout layer improve deep/machine learning performance, given that dropout suppresses some neurons from the model?

7 votes
1 answer
5k views

Is it a good practice to always apply `ReduceLROnPlateau()`, given that models benefit from reducing learning rate once learning stagnates?

7 votes
1 answer
438 views

What are some situations when normalizing input data to zero mean, unit variance is not appropriate or not beneficial?

6 votes
3 answers
5k views

Why does the naive bayes algorithm make the naive assumption that features are independent to each other?

6 votes
1 answer
4k views

Why does removal of some features improve the performance of random forests on some occasions?

5 votes
3 answers
7k views

How to handle "unknown" category in machine learning classification problems?

3 votes
1 answer
10k views

Is it necessary to convert labels in string to integer for scikit_learn and xgboost?

3 votes
1 answer
1k views

What does high variance mean in a binary classification machine learning model?

2 votes
2 answers
556 views

Why is there a trade-off between bias and variance in supervised learning? Why can't we have best of both worlds?

2 votes
1 answer
1k views

Is the multilayer perceptron only able to accept 1d vector of input data? If yes, why is this so?

1 vote
1 answer
7k views

Why is the softmax function often used as activation function of output layer in classification neural networks?

1 vote
1 answer
113 views

How can generative models be used in machine learning classification applications?

1 vote
1 answer
339 views

How to split data into training, validation, test data sets if the data is non-stationary?

1 vote
1 answer
262 views

Why do neural networks use cost minimization of loss function and not profit maximization of profit function?

0 votes
1 answer
136 views

How to tell a boosting model that 2 features are related and should not be interpreted stand-alone?

0 votes
1 answer
182 views

How will a decision tree cope if it cannot find a suitable feature to choose as root node from which to split further?

0 votes
1 answer
554 views

What are the factors to consider when setting the depth of a decision tree?

0 votes
1 answer
868 views

How does one decide when to use boosting over bagging algorithm?