Applied Scientist Interview Questions

1,159 applied scientist interview questions shared by candidates

1. What are the evaluation metrics used for LLM evaluation? 2. How is LSTM different from Transformer architecture? 3. Why is RAG architecture used instead of fine-tuning LLM models? 4. How is BERT different from GPT model? 5. What will I do in case of imbalanced dataset? 6. How is linear regression different from logistic regression? What types of loss functions are used in each of these scenarios? 7. What is the task of dropout and activation function?
avatar

Applied Scientist

Interviewed at Amazon

3.5
Sep 19, 2025

1. What are the evaluation metrics used for LLM evaluation? 2. How is LSTM different from Transformer architecture? 3. Why is RAG architecture used instead of fine-tuning LLM models? 4. How is BERT different from GPT model? 5. What will I do in case of imbalanced dataset? 6. How is linear regression different from logistic regression? What types of loss functions are used in each of these scenarios? 7. What is the task of dropout and activation function?

Typical leetcode questions. Even the recruiters advised me to "practice" on leetcode before the interviews. Total waste of time ML depth round was not a depth round at all. Interviewer was busy taking notes and didn't probe the concepts further "Name all the hyperparameters of boosting model - XGB and/or GBM" Simpler alternative is to replace all interviewers with automated tests. I felt like I was talking to computers. I prefer leetcoding and attending multiple choice ML questions over talking to people who mechanistically follow instructions
avatar

Applied Scientist

Interviewed at Amazon

3.5
Nov 20, 2021

Typical leetcode questions. Even the recruiters advised me to "practice" on leetcode before the interviews. Total waste of time ML depth round was not a depth round at all. Interviewer was busy taking notes and didn't probe the concepts further "Name all the hyperparameters of boosting model - XGB and/or GBM" Simpler alternative is to replace all interviewers with automated tests. I felt like I was talking to computers. I prefer leetcoding and attending multiple choice ML questions over talking to people who mechanistically follow instructions

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