Two AI variants: rule-based and corpus-based The two AI variants mentioned in previous blog posts are still topical today, and they have registered some remarkable successes. The two differ from each other not least in where precisely their intelligence is situated. Let’s first have a look at the rule-based system. Structure of a rule-based system In the Semfinder company, we used a rule-based system. I drew the following sketch of it in 1999: Green: data Yellow: software Light blue: knowledge ware Dark blue: knowledge engineer The sketch consists of two rectangles, which represent different locations. The rectangle bottom left shows