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Coding
2 years ago
Write a tool/function for reversing a string.
Data ScientistMachine Learning Engineer

Bolt

Skyscanner

StubHub

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2 years ago
ML Knowledge
2 years ago
What do you know about regularization and its role in machine learning?
Data Scientist

Bolt

Rovio Logo

Rovio

Snowflake Logo

Snowflake

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2 years ago
Statistics
2 years ago
Could you provide an explanation of the variance between likelihood and probability?
Data Scientist

Bolt

LendingClub Logo

LendingClub

NetApp Logo

NetApp

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2 years ago
Analytics Case
2 years ago
Explain the process you would use to compare and contrast the effectiveness of two distinct search algorithms.
Data Scientist

Bolt

SeatGeek Logo

SeatGeek

Redfin Logo

Redfin

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2 years ago
Coding
2 years ago
How would you leverage the use of a hash table to tackle the two sum problem in O(n) time complexity?
Data Scientist

Bolt

Spotify Logo

Spotify

Teradata Logo

Teradata

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2 years ago
Statistics
2 years ago
Can you go into detail about what the X and Y axes represent on a ROC curve?
Data Scientist

Bolt

Ticketmaster Logo

Ticketmaster

Robinhood Logo

Robinhood

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2 years ago
Analytics Case
2 years ago
What steps would you take if you noticed a drop of 15% in the number of notifications being sent?
Data Scientist

Bolt

Slack Logo

Slack

HubSpot Logo

HubSpot

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2 years ago
Coding
2 years ago
I'd like you to design a function that takes an integer array and a target value as input and returns all the triplets whose sum is equal to the target.
Data Scientist

Bolt

Amazon Web Services Logo

Amazon Web Services

Criteo Logo

Criteo

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2 years ago
SQL
2 years ago
Can you differentiate between the use of window functions, aggregate functions, and joins in SQL?
Data Scientist

Bolt

Stitch Fix Logo

Stitch Fix

Quantcast Logo

Quantcast

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2 years ago
ML Knowledge
2 years ago
How does information theory serve in the comparison of language models? Provide an instance of how you might apply this in practice.
Data Scientist

Bolt

Glovo Logo

Glovo

Walmart Logo

Walmart

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2 years ago

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