X1 - defining the problem

the most critical stage as a well defined problem sets everything up for success

this stage involves one of the following:

• classification
• regression
• time-series forecasting
• computer vision
• natural language processing (NLP)

consider a retail business

classification involves answering whether a customer will leave or not

regression would be predicting the revenue generated per customer

time-series forecasting would predict weekly sales

computer vision includes analysing in-store camera images

NLP would be extracting sentiment from customer reviews