What are various evaluation parameters of regression and classification to evaluate the model?
Data Science Engineer Interview Questions
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Supervised learning problem and k means clustering problem.
What is pruning?
Asked about the working of KMeans Clustering
Product sense part 4 : (fraud case) How would you test the causality for the KPI you mentioned
[SQL] Given a table with logs of interactions with posts (share, like, comment, report), how many posts were marked as spam?
NDA SQL, Products, Experimentation
How to count unique elements in a column of a table?
1. FB has hired raters to rate ads. 80% are careful rates and rate 60% of the ads as good and 40% as bad, 20% are lazy raters and rate 100% ads as good. What is the probability that an ad is rated good? Given that 3 ads have been rated as good, what is the probability that they were rated by a lazy rater? Given that n ads have been rated as good, what is the probability that they were rated by a lazy rater? You want to classify raters as careful/lazy, how would you do that using all the probabilities and ideas discussed above (open ended question)?
How have you dealt with stressful situations on the job in the past?
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