Staff Scientist Interview Questions

413 staff scientist interview questions shared by candidates

The Interviewer has a list of problems mentioned below. I was asked to pick one of them and code the algorithm 1. There are few points generated which belong to two classes. I was asked to code the logistic regression without using any external library like scikit-learn or scipy. I was to asked to code entirely in numpy 2. There's a question on solving PCA using iterative methods 3. There's a question on solving eigen vectors using iterative methods 4. There's a question on clustering using k-means on a psuedo generated clusters. 5. One more Question is to implement EM algorithm using numpy. During the process of interview and coding lot's of questions related to optimized numpy code. Ex he asked do you what broadcasting is ?. Mostly he tried to make me do vectorized numpy coding
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Staff Data Scientist

Interviewed at Walmart

3.4
May 29, 2020

The Interviewer has a list of problems mentioned below. I was asked to pick one of them and code the algorithm 1. There are few points generated which belong to two classes. I was asked to code the logistic regression without using any external library like scikit-learn or scipy. I was to asked to code entirely in numpy 2. There's a question on solving PCA using iterative methods 3. There's a question on solving eigen vectors using iterative methods 4. There's a question on clustering using k-means on a psuedo generated clusters. 5. One more Question is to implement EM algorithm using numpy. During the process of interview and coding lot's of questions related to optimized numpy code. Ex he asked do you what broadcasting is ?. Mostly he tried to make me do vectorized numpy coding

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