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ML Knowledge

a year ago

In supervised learning models, what differentiates bagging from boosting, and how do they impact the bias and variance of the model?

Data Scientist

Optimizely

Peloton

Niantic

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a year ago

Behavioral

a year ago

What is one time you had to stand up and disagree with a team member's approach?

Data ScientistUX ResearcherEngineering ManagerUX Designer

Optimizely

MakeMyTrip

NerdWallet

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a year ago

ML Knowledge

a year ago

How would you define bootstrapping, and do you consider it a good practice to enlarge sample size?

Data ScientistMachine Learning Engineer

Optimizely

Atlassian

Dell

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a year ago

Coding

a year ago

Write a function to manipulate a pandas dataframe.

Data Scientist

Optimizely

Monzo

Commvault

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a year ago

ML Knowledge

a year ago

How would you explain the concept of gradient boost in the field of machine learning?

Data Scientist

Optimizely

Hitachi

Grubhub

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a year ago

Coding

a year ago

Illustrate how one might write a function to simulate a normal distribution and plot the results.,

Data Scientist

Optimizely

SoFi

Qualcomm

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a year ago

Behavioral

a year ago

Share an example of a time you failed to achieve your goal

Data ScientistData Engineering ManagerUX DesignerEngineering Manager

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Chewy

SAP

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a year ago

ML Knowledge

a year ago

Do you have experience building KNN classifiers independently?

Data Scientist

Optimizely

Fiverr

Zalora

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a year ago

Behavioral

a year ago

Do you find it difficult to manage your workload in your current position?

Data ScientistFull Stack Software EngineerFrontend EngineerQuality Assurance Engineer

Optimizely

Hired

Mailchimp

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a year ago

ML Knowledge

a year ago

How do you use cross-validation to evaluate the performance of a machine learning model?

Data Scientist

Optimizely

Walmart

Ancestry

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a year ago

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

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