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Create a program in a language of your choice to read a text file with various tweets. The output should be 2 text files-one that contains the list of all unique words among all tweets along with the count for repeated words and the second file should contain the medium number of unique words for all tweets.
What do you understand by parametric and non-parametric methods? Explain with examples.
State some use cases where Hadoop MapReduce works well and where it does not.
You can roll a dice three times. You will be given $X where X is the highest roll you get. You can choose to stop rolling at any time (example, if you roll a 6 on the first roll, you can stop). What is your expected pay-out?
You are at a Casino. You have two dices to play with. You win $10 every time you roll a 5. If you play till you win and then stop, what is the expected pay-out?
How will you fix multi-colinearity in a regression model?
What are the metrics you will use to track if Uber's paid advertising strategies to acquire customers work? How will you figure out the acceptable cost of customer acquisition?
How will you design the heatmap for Uber drivers to provide recommendation on where to wait for passengers? How would you approach this?
Case Study based questions - Cars are implanted with speed tracker so that the insurance companies can track about our driving state. Based on this new scheme what kind of business questions can be answered?
How will you find the second largest element in a Binary Search tree ?
What Is An Avl Tree?
Which technique will you use to compare the performance of two back-end engines that generate automatic friend recommendations on Facebook?
You have two tables-the first table has data about the users and their friends, the second table has data about the users and the pages they have liked. Write an SQL query to make recommendations using pages that your friends liked. The query result should not recommend the pages that have already been liked by a user.
How would you add value to the company through your projects?
Explain about the various time series forecasting technqiues.
