What is machine learning and how can it be used for time series analysis?
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Explain auto-encoder
How different is a mean value different from expected value?
Explain principal components analysis with equations.
Give a large dataset, find the median.
What is logistic and linear regression? How do you treat multicollinearity and heteroscedasticity in regression?
What packages are used for data mining in python and r?
Explain supervised learning?
Can you compare the validation set with the test set?
You are given two tables- friend_request and request_accepted. Friend_request contains requester_id, time and sent_to_id and request_accepted table contains time, acceptor_id and requestor_id. How will you determine the overall acceptance rate of requests?
Where linear optimization is used?
Which companies participating in Insight would you be interested in working for?
How do you treat missing values during analysis?