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ML Knowledge

2 years ago

What does k-means clustering entail, and does it always result in a global optimum? Write a program for k-means clustering given an N*D matrix.

Machine Learning Engineer

Walmart

Optimizely

Intuit

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2 years ago

ML Knowledge

2 years ago

In time series analysis, what other models could be used in place of ARIMA?

Machine Learning Engineer

Walmart

Stripe

ClassPass

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2 years ago

ML Knowledge

2 years ago

What techniques are available to reduce dimensionality in Machine Learning, and how are they used in practice?

Machine Learning Engineer

Walmart

Zalando

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2 years ago

ML Knowledge

2 years ago

What are the roles of batch normalization and dropout in training deep neural networks?

Machine Learning Engineer

Walmart

Verizon

Citrix

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2 years ago

Coding

2 years ago

How do you code a Python program to output the Fibonacci series up to a certain number?

Machine Learning Engineer

Walmart

Panasonic

HubSpot

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2 years ago

ML Knowledge

2 years ago

What is bootstrapping? Is it good to apply bootstrapping on samples to increase your sample size?

Machine Learning EngineerData Scientist

Walmart

Atlassian

Dell

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2 years ago

Coding

2 years ago

Best Time to Buy and Sell Stock

You have access to an array where each element represents the price of a specific stock on a given day. Your objective is to maximize profit by selecting one day to purchase the stock and a different, future day to sell it. Determine and return the maximum profit achievable. If it's impossible to generate a profit, return 0.

Input: prices = [9,3,8,2,7,5]

Output: 5

Explanation: Purchase on day 2 (price = 3) and sell on day 5 (price = 7) for a profit of 7 - 3 = 4.

Machine Learning Engineer

Walmart

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2 years ago

ML Knowledge

2 years ago

Could you elucidate the minimum height tree concept and the process to assemble one?

Machine Learning Engineer

Walmart

ASML

Honeywell

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2 years ago

ML Knowledge

2 years ago

Can you elaborate on what an attention model entails?

Machine Learning Engineer

Walmart

Calm

Infineon

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2 years ago

ML Knowledge

2 years ago

Can you articulate the differences between using a confusion matrix and an ROC curve for model evaluation?

Machine Learning EngineerData Scientist

Walmart

Udacity

Splunk

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2 years ago

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^*All interview questions are submitted by recent Walmart Machine Learning Engineer candidates, labelled and categorized by Prepfully, and then published after being verified by Machine Learning Engineers at Walmart.

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Best Time to Buy and Sell Stock

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