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.
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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?
data analysis challenge
Tell me about the time you influenced someone
Difference between supervised and unsupervised machine learning ?
If you could only pick one metric to measure a game's success, what would it be?
Certain programming commands
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