The customer funnel, also known as the marketing funnel or sales funnel, is a conceptual model that represents the journey a customer goes through as they move from awareness of a product or service to the point of purchase. The funnel is usually depicted as a wide top that narrows as it progresses downward, with each stage representing a different phase in the customer's journey. Understanding the customer funnel can help businesses understand how to effectively market and sell their products or services and identify areas where they can improve the customer experience. TF-IDF, which stands for "term frequency-inverse document frequency," is a statistical measure that can be used to assign weights to words or phrases in a document. It is commonly used in information retrieval and natural language processing tasks, including text classification, clustering, and search. In the context of the customer funnel, TF-IDF could be used to weigh different events or actions that a customer takes as they move through the funnel.