TF(phrase inside of a doc)= Range of occurrences of that phrase in document / Amount of words in doc Amazon Go outlets utilize Personal computer vision and sensors for just a cashier-significantly less buying experience where customers can pick up items and depart while not having to go through a https://summit-company-sdn-bhd97531.tinyblogging.com/the-smart-trick-of-conversational-ai-that-nobody-is-discussing-80692197