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ML Knowledge
3 years ago
What optimization methods are you aware of and comfortable discussing? How do you optimize in a situation where there are a million variables involved? How does simplex navigate through the potential solutions in an optimization problem?
Data Scientist

Visa

Venmo

Expedia

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3 years ago
Coding
3 years ago
Implement a function that returns the nth Fibonacci number using recursion.
Data Scientist

Visa

EPAM Systems

SwiftKey

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3 years ago
ML Knowledge
3 years ago
Explain how the bias-variance tradeoff functions in machine learning, and can you describe a specific scenario where this tradeoff has had a significant effect on a model's performance?
Data Scientist

Visa

Asana Logo

Asana

Sprinklr Logo

Sprinklr

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3 years ago
Behavioral
3 years ago
What do you do to earn trust from your team?
Data ScientistEngineering ManagerUX DesignerUX Researcher

Visa

Gupshup Logo

Gupshup

RentoMojo Logo

RentoMojo

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3 years ago
ML Knowledge
3 years ago
Can you discuss the convergence of stochastic gradient descent (SGD) and its advantages over gradient descent?
Data Scientist

Visa

Zillow Logo

Zillow

ByteDance Logo

ByteDance

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3 years ago
Statistics
3 years ago
Rolling a die will result in a prize determined by the number shown. What is the expected return?
Data Scientist

Visa

trivago Logo

trivago

Marqeta Logo

Marqeta

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3 years ago
BehavioralTechnical
3 years ago
Can you tell us some of the key takeaways from a craft conference you recently attended?
Data ScientistData Engineering ManagerUX DesignerEngineering Manager

Visa

LendingClub Logo

LendingClub

Bill.com Logo

Bill.com

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3 years ago
ML Knowledge
3 years ago
How do the summarizations of Logistic Regression and SVM deviate from each other?
Data Scientist

Visa

Bosch Logo

Bosch

Zomato Logo

Zomato

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3 years ago
Behavioral
4 years ago
What do you think Visa values in its employees?
Data Scientist

Visa

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4 years ago
SQL
4 years ago
How will the database store information about the genre, duration, and ratings of individual songs?
Data Scientist

Visa

Discord Logo

Discord

DigitalOcean Logo

DigitalOcean

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4 years ago

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*All interview questions are submitted by recent Visa Data Scientist candidates, labelled and categorized by Prepfully, and then published after being verified by Data Scientists at Visa.

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