Explain collaborative filtering
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Why L1 regularizations causes parameter sparsity whereas L2 regularization does not?
Is it possible to perform logistic regression with Microsoft Excel?
What is an api? What are apis used for?
Explain why data cleansing is essential and which method you use to maintain clean data?
How will you decide whether a customer will buy a product today or not given the income of the customer, location where the customer lives, profession and gender? Define a machine learning algorithm for this.
Why we need ggplot?
How will you drop variables using indices in a data frame?
What is a generating function?
You are about to get on a plane to Seattle, you want to know whether you have to bring an umbrella or not. You call three of your random friends and as each one of them if it's raining. The probability that your friend is telling the truth is 2/3 and the probability that they are playing a prank on you by lying is 1/3. If all 3 of them tell that it is raining, then what is the probability that it is actually raining in Seattle.
Name some kinds of graphs and explain how you would build them in python or r.
What is the role of activation function?
What is k-means? How can you select k for k-means?
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