Machine Learning Intern Interview Questions

8,198 machine learning intern interview questions shared by candidates

Phone: Decode string, e.g. input “3[a2[c]]” output “accaccacc” What if the string is a stream that is not able to fit into the memory? Onsite: LRU Cache Implement KNN, bias variance tradeoff, why curse of dimensionality, discussion of convergence of sgd (or gd), why cross validation Min ‍‌‌‍‍‌‌‍‍‌‌‌‌‍‍‍‌‍‍height tree
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Machine Learning Engineer

Interviewed at Apple

4.2
Mar 20, 2023

Phone: Decode string, e.g. input “3[a2[c]]” output “accaccacc” What if the string is a stream that is not able to fit into the memory? Onsite: LRU Cache Implement KNN, bias variance tradeoff, why curse of dimensionality, discussion of convergence of sgd (or gd), why cross validation Min ‍‌‌‍‍‌‌‍‍‌‌‌‌‍‍‍‌‍‍height tree

A large part of the interview focused on my PhD thesis. After I explained my research at the beginning, the interviewers asked in-depth questions to assess how well I understood my own work. Later, they asked machine-learning–related questions relevant to the role, including hypothetical scenarios about how I would approach and analyze a given type of data etc.
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Machine Learning Engineer

Interviewed at Multiverse Computing

3.8
Feb 6, 2026

A large part of the interview focused on my PhD thesis. After I explained my research at the beginning, the interviewers asked in-depth questions to assess how well I understood my own work. Later, they asked machine-learning–related questions relevant to the role, including hypothetical scenarios about how I would approach and analyze a given type of data etc.

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