This is a blank affinity diagram. An affinity diagram is the structured result of a brainstorming session. It is one of the seven planning management tools. The diagram, also known as the KJ method, was created in the 1960s by Kawakita Jiro. An affinity diagram's purpose is to generate, organize, and consolidate information about a product, process, complex issue, or problem. Creating an affinity diagram is a creative process that allows you to express your ideas without quantifying them.