Why add l2 penalty to linear regression.
Data Researcher Interview Questions
14,854 data researcher interview questions shared by candidates
Where in the earth or a sphere, you can return to the same place once you walk 1 mile to south, 1 mile to east and 1 mile to north?
If you are playing tennis and are at deuce with your rival, how would you choose to proceed? There are two options: keep playing deuce rule until you or your rival wins. Or you play 3 mini points rule, who win 2 points wins the game. Assume you winning rate is 0.7 i.i.d at each point, which rule would you pick?
What can we deal with OLS when high dimension, high correlation and some other flaws in data ?
If you can only ask one survey question, what question would you ask to evaluate how people feel about xx product's entire experience?
Given three bowls, one with two blue balls, one with two red balls, and one with a red ball and a blue ball, what is the probability of pulling a blue ball from the same bowl given that you have already pulled one blue ball from that bowl?
the expected number of flips to see 2 heads from a series of fair coin tosses
A,B and C choose a integer between 1 and 100 in turn to minimize the difference between the integer they choose and an unknown uniformly distributed random integer. B knows what A chooses and C knows what A,B choose. What is A's optimal strategy?
First round: basic probability, combinatorics. A bear wants to catch 3 fish from a river. when he has caught 3 fish, he'll leave. when a fish comes, there is a 1/2 chance he'll catch it. what's the probability that the 5th fish will not be caught?
Chance that a student passes the test is 10%. What is the chance that out of 400 students AT LEAST 50 pass the test? Check the closest answer: The offered answers were 5%, 10%, 15%, 20%, 25%.
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