Flowcharts are graphical diagrams that show the steps and logic of an algorithm. They use symbols, arrows, and text to illustrate the inputs, outputs, processes, decisions, and loops of an algorithm.

Like input-output symbols, process boxes have a single line connecting it to the previous flowchart step and a single line leading to the next one. A flowchart may contain any number of process boxes.

Machine-learning algorithms are responsible for the vast majority of the artificial intelligence advancements and applications you hear about. (For more background, check out our first flowchart ...