Data Scientist Senior Interview Questions

3,397 data scientist senior interview questions shared by candidates

1. Explain Matrix Factorization for the recommendation system. 2. Case study based question. 2. Explain generative adversarial networks. 3. Loss function of GAN 4. Coding question, solve n stairs problem. every time we can take step 1 ot step 2. print max possibles ways. use either dynamic or recursive approach.
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Senior Data Scientist

Interviewed at EY

3.6
Oct 13, 2021

1. Explain Matrix Factorization for the recommendation system. 2. Case study based question. 2. Explain generative adversarial networks. 3. Loss function of GAN 4. Coding question, solve n stairs problem. every time we can take step 1 ot step 2. print max possibles ways. use either dynamic or recursive approach.

Questions during interview: 1- Say you do on-line ads for two different companies, EasyJet and Mercedes. How would you present your results to the board and prove them you did not waste any money? 2- Another question that involves some economic thinking about why profits go down etc. in the on-line ad business. I recommend you review concepts such as Click-Through Rate, Conversion Rate and the auction mechanisms in on-line marketing etc. 3- After Facebook users pass away, their profile pages remain. So today we have some dead users and some users that are still alive. Will the number of dead people ever equal that of the ones that are alive? When will that happen? How would you calculate it?
Nov 4, 2014

Questions during interview: 1- Say you do on-line ads for two different companies, EasyJet and Mercedes. How would you present your results to the board and prove them you did not waste any money? 2- Another question that involves some economic thinking about why profits go down etc. in the on-line ad business. I recommend you review concepts such as Click-Through Rate, Conversion Rate and the auction mechanisms in on-line marketing etc. 3- After Facebook users pass away, their profile pages remain. So today we have some dead users and some users that are still alive. Will the number of dead people ever equal that of the ones that are alive? When will that happen? How would you calculate it?

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