C5i

1. What is TF-IDF in NLP?

2. What is testing?

3. What is proba method ? How is class probability calculated in decision trees ? How's a machine learning model evaluated ?

4. Consider a scenario where you want to get buy-in from internal stakeholders to build a product, but you don't have any resources to build a prototype. Management wants you to bring in an alpha customer to demonstrate that there is a demand for the product. Information on competitors is limited. How do you build a business case to present to management to convince them to give you resources to build it?

5. What are SQL Joins?