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Deloitte

Agoda

Expedia

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.

Deloitte

2 years ago

Can you discuss the use of confusion matrix and ROC curve in evaluating a model's performance? How do they differ and when would you use one over the other?

2 years ago

Machine Learning EngineerData Scientist

Deloitte

SurveyMonkey

NerdWallet

2 years ago

What is the difference between batch normalisation and instance normalisation?

Machine Learning EngineerData Scientist

Deloitte

Fitbit

Zillow

3 years ago

System Design

Design a system for real-time sentiment analysis of social media posts.

Deloitte

3 years ago

Statistics

Could you provide an explanation of how to split up errors into bias and variance categories in a predictive model?

Deloitte

Affirm

BetterUp

3 years ago

In what ways does information theory assist in contrasting language models, and could you give an example of its application for model comparison?

Deloitte

Infineon

Zoox

3 years ago

Can you discuss the function of an ROC curve in evaluation and the meaning of AUC?

Deloitte

Comcast

Panasonic

3 years ago

System Design

Develop an automated ad placement system for websites.

Deloitte

3 years ago

Can you explain what DMatrix is in XGBoost? How does it differ from other data structures used in gradient boosting?

Machine Learning EngineerData Scientist

Deloitte

Prezi

Rivian