Motivation, Statistik, Maschinelles Lernen, Fallstudie
Science Interview Questions
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They asked a lot of questions about my take-home project; in particular wanted to know about the reasons that I took the approach that I did. I could tell they were coming more from a statistical and economics background for the most part; while I'm more of an engineering and machine-learning hacker type standpoint. They also had a lot of "ambiguous" questions; by that, I mean questions about ambiguous business situations I might encounter in this position. Wanted to know how well I would do with ambiguous questions I might get from business leaders.
What is the difference between bagging and boosting algorithms
Tell me more about your previous experience? Did you work as data scientist? How many years of work experience you have ? About masters degree? where are you graduating from? do you need H1B in future
In data scientist job, you can separate into three parts: Data Cleaning, Data Analysis, and Visualization. Which part would you prefer to do?
Given a string like 'abc', print out all the strings of combination of the same length as the original string. Like 'abc', 'acb', 'bca', 'bac', 'cab', 'cba'
Two tables: User actions: date|sessio_id|userid|event session details: date|Sessionid|timespent_Sec|userid 1. Identify avg time spent per user per day 2. Create a histogram of duration on x axis, no of users on y axis which is populated by volume in each bucket Product questions: 1. Wants to add a new banner on FB Market place which suggests to sell something on facebook , should they do it, what should be done to evaluate it ? 2. Market place transactions happen through messages - these messages went down by 10% in a month, should they be worried ? How would you go about analyzing it?
Why Facebook
How do you measure newsfeed health?
Say you notice a surge in average activity among users but the number of users is down, how would you explain this?
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