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How do you tackle the issue of high cardinality within categorical data fields?

Tell us about a time when you had to deal with conflict

How would you apply the greedy method to locate the smallest subarray exceeding a target sum in an integer array?

What do you think are the main reasons behind the noticeable disparity between the two groups in an A/B test?

Suppose you have two tables, "orders" and "customers", where "orders" contains information about orders and "customers" contains information about customers. Write an SQL query that calculates the average order value for each customer who has made at least 3 orders in the last month, and only includes customers who are located in the United States. The query should require a join between the two tables.

Please give me an example of a time when you demonstrated initiative.

Can you design a relational database for storing song information (like iTunes)? Explain.

In what way does PCA work and what are some of its cons?

Why does SGD converge differently than gradient descent, and what advantages does this present?

Tell us about a time when you made a big mistake at work.