Learn in the textbookBI, Data Warehouse, and Mining
DefinitionText mining (テキストマイニング) is a method of breaking text data, such as free-form survey answers and social media posts, into words and reading trends from how often they appear and how they relate.
ExplanationUnlike a table of numbers, text cannot be totaled or averaged as it stands. Cutting sentences into words and counting them is what first makes it possible to treat text as quantities. For example, records from a support desk can reveal which complaints are on the rise.
AnalogyIt is like handing a machine the job of a person who reads piles of comments and notices that a certain topic keeps coming up lately.