Questions about database and Machine Learning. The interviewer asked about my background in operations research and machine learning. Several programming questions with language of my choice.
Data Scientist Interview Questions
33,930 data scientist interview questions shared by candidates
What if you want to evaluate your model with respect to a system running on the client-side? How you are going to charge your client if your model is better than his system?
Take the integer 123 and convert it to 321. God forbid you use the most concise, correct solution, though. But hey, maybe I saved someone from this inane question since it's on full display on Glassdoor now.
The second question was trying to predict for 7 days. Follow up question was if u predict using the prediction u might accumulate errors.
Write a SQL query to count the number of unique users per day who logged in from both iPhone and web, where iPhone logs and web logs are in distinct relations.
How you will decide the number of clusters in k means?
How you will handle class imbalance problem? What are various approaches?
2) What is generally considered a trade-off in machine learning?
Tell me about the time you influenced someone
Difference between supervised and unsupervised machine learning ?
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