Natural Language Processing, Databases (SQL), Data Science general questions, etc.
Sr Data Scientist Interview Questions
3,368 sr data scientist interview questions shared by candidates
This was a first stage interview so we just talked about the role, how they work and my previous experience , what projects I worked on in the past.
Presented a case about an international financial product and how to break it down to make it accessible to many customers from a financial as well as logistic perspective.
1. Programming questions 2. Machine learning and NLP concepts 3. Intent classification algorithm 4. Entity detection algorithm 5. Model performance metrics 6. LSTM
Case study - statistical analysis, and build a classifier for predicting high cost patients. This is timed to be performed in 3 hours. Totally ridiculous dataset - you'll get 18 files to analyze with each file containing from 120 - 20k rows, and each file has about 10-35+ columns. And you won't get any data schema, so you'll have no idea on the PK, FK. And PK are different for each file. You'll run out of memory, so analyze each file separately. And also look into the from_date from claims transactions file to include only latest transactions, as some of it is from 1929.
Leetcode medium and some ML depth related questions.
How would you join and summarize these tables? If you had an app that recommends restaurants based on customer reviews (think yelp), how would your app make recommendations for new restaurants (for which there would be no reviews)?
1. Questions about RAG, chunking techniques, Retrieval Optimization, Prompting techniques 2. BERT and embeddings 3. Cloud Managed AI questions
896. Monotonic Array An array is monotonic if it is either monotone increasing or monotone decreasing. An array nums is monotone increasing if for all i <= j, nums[i] <= nums[j]. An array nums is monotone decreasing if for all i <= j, nums[i] >= nums[j]. Given an integer array nums, return true if the given array is monotonic, or false otherwise.
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