It's a phone interview about technical question. About how to generate all possible friendship given four tables with the "request", "accept","reject", and "remove" information.
Data Scientist Intern Interview Questions
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How many dentist are there in the US?
Given a database of posts and a database of comments on those posts, how do you determine how many conversations are happening in the comments per post on average.
The three data structure questions are: 1. the difference between linked list and array; 2. the difference between stack and queue; 3. describe hash table.
Q. Tell me about a time when you were short on deadline and how did you handle it? Q. Write a Python code to return the count of words in a string Q. What is cross validation Q. Tell me about your favorite algorithm
How would you build and test a metric to compare two user's ranked lists of movie/tv show preferences?
What is probability of getting one pair of card from 52 deck of cards? How would you improve work hours?
given a table massenger_sends, date | ts | sender_id | receiver_id| message_id | has_reaction Q1) how many unique conversation threads are there ? note that there are threads that sender_id and receiver is inverse. this should be one thread
Mapreduce questions
How many high schools that people have listed on their profiles are real? How do we find out, and deploy at scale, a way of finding invalid schools?
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