Figure 2From: Extracting complements and substitutes from sales data: a network perspectiveExample of a product-purchase network, where blue squares are transaction nodes, red circles are products nodes and these two sets of nodes are connected if the product is purchased in the corresponding transaction, with the underlying sales data containing both complements (e.g. hot dog3 and hot dog bun1) and substitutes (e.g. taco seasoning1 and taco seasoning2)Back to article page