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SQL

7 months ago

How can we calculate the average transaction value for customers who have made more than 10 purchases in the last 90 days?

Data Scientist

ByteDance

Deliveroo

Patreon

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7 months ago

ML Knowledge

8 months ago

Regarding the vanishing gradient issue, which activation function—ReLU or sigmoid—is preferable?

Data ScientistMachine Learning Engineer

ByteDance

DigitalOcean

Faire

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8 months ago

Statistics

8 months ago

What are type I and type II errors, and how do they differ in the context of hypothesis testing? In terms of severity, which error do you think is the worst?

Data Scientist

ByteDance

Scribd

DataRobot

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8 months ago

SQL

8 months ago

How will the database store details about each track, including the title, artist, album, release date, and cover art?

Data Scientist

ByteDance

Discord

DigitalOcean

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8 months ago

Statistics

8 months ago

Can you describe some of the factors that might have led to the disparity in outcomes between the two groups in an A/B test?

Data Scientist

ByteDance

Dollar Shave Club

Rivian

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8 months ago

ML Knowledge

8 months ago

Why is DBSCAN considered a density-based clustering algorithm?

Data Scientist

ByteDance

Mozilla

Fitbit

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8 months ago

ML Knowledge

8 months ago

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

Data Scientist

ByteDance

Zillow

Mimecast

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8 months ago

ML Knowledge

8 months ago

In data science, precision and recall are considered important metrics for model evaluation. Can you explain the concept of these two metrics and discuss some factors that can affect their reliability?

Data Scientist

ByteDance

Benchling

Broadcom

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8 months ago

Statistics

9 months ago

Could you break down the idea of regression for an executive without a statistical foundation?

Data Scientist

ByteDance

Snowflake

Dollar Shave Club

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9 months ago

Analytics Case

a year ago

How do you incorporate uncertainty into your predictions of a user's lifetime value?

Data Scientist

ByteDance

Mozilla

Twilio

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a year ago

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