👉 Apriori is a technique used in data mining and machine learning to extract information from large datasets. It involves identifying subsets of columns that are likely to contain valuable data, or "apriori" meaning "prior". The algorithm works by using a combination of rules (rules) to select the most informative subsets of columns. These rules can be based on various criteria such as column frequency, column size, and other statistical properties. The goal is to identify sets of columns that are likely to contain