You have been assigned to do a study of the daily revenue effect of a pricing model of online transactions. You have tested all the theoretical models in the previous model planning stage, and all tests have yielded statistically insignificant results. What is your next step?
A data scientist is asked to implement an article recommendation feature for an on-line magazine. The magazine does not want to use client tracking technologies such as cookies or reading history. Therefore, only the style and subject matter of the current article is available for making recommendations. All of the magazine's articles are stored in a database in a format suitable for analytics.Which method should the data scientist try first?
How are window functions different from regular aggregate functions?
Consider these itemsets:(hat, scarf, coat)(hat, scarf, coat, gloves)(hat, scarf, gloves)(hat, gloves)(scarf, coat, gloves)What is the confidence of the rule (hat, scarf) -> gloves?
In the MapReduce framework, what is the purpose of the Map Function?
You have completed your model and are handing it off to be deployed in production. What should you deliver to the production team, along with your commented code?
