Interview Question

Difference between random forests and gradient boosting.

Suppose we want to remove all duplicate words (words are separated with single whitespace) in a line, which is accepted by the user. The following code is written to do that. Choose the correct observation based on the code. s = ...

Which of the given is not a phase in Mapreduce process? splitting mapping shuffling Compiling A 1 and 2 only B 3 only C 4 only D Both 1 and 3

What does the following code print? Suppose we want to remove all duplicate words (words are separated with single whitespace) in a line, which is accepted by the user. The following code is written to do that. Choose the correct observation ...

In Python 3, which of the following statements about dictionaries are correct:   They are an unordered collection of elements. The elements are stored as key-value pairs. They are indexed by keys. The values can be of any type but the keys are immutable. A 1, 2, ...

Tell me about one of your past data science project?

What is r-squared value?

How do you select which columns/features you want that best describes target variable out of a N features?

What is multicollinearity ?

What is Chi-Square test?