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What do you know about cross-validation, and how might it be utilized in the field of machine learning?

Could you tell me about a time when you went the extra mile for a project or endeavor?

Are you familiar with the technique of cross-validation, which allows you to assess the effectiveness of a machine learning model?

Tell me about a time when you led a team.

What optimization algorithms can you list from your repertoire? How would you tackle the challenge of optimizing a problem with a million variables? What is the principle behind the simplex algorithm in optimization?

In a machine learning problem, if you have a high-dimensional dataset, how would you go about handling it?

What are the ways in which your experience aligns with the values of Visa?

Could you please create an ER diagram that represents the relationships between the tables used in the song information database?

Please share an experience when you took a risk.

Can you tell me about a time when you disagreed with a team member's approach?