Chapter 1. Graphs Are Everywhere
Graphs are all around us. Each time we access the Internet, the data packets travel across a network of routers, switches, and cables and deliver what we have requested. While representing key concepts/objects in a problem and defining relationships or interactions between the concepts/objects involved, we generally draw bubbles or boxes to denote the objects, and arrows between those objects to represent the interactions or relationships. We use a similar notation while drawing a map to explain routes to others. The beauty of these notations, such as bubbles and arrows, is their expressiveness, a property that is usually lost when we obfuscate the model into records and tables. Graphs allow us to discover information ...
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