In terms of knowledge representation, a living graph (also referred to as a "lifeline", "living timeline"[1] or "fortune line".[2]) is a graph similar to a chronology timeline which places events along a horizontal axis, while the vertical axis is used to represent factors such as an emotional reaction to those events, or the event's relative importance, its success or failure, danger/safety, etc. The choices are endless. In this sense they have been described as being "timelines with attitude".[1] Their main use appears to be as teaching aids. The student is encouraged to look at historical events from a particular perspective in order to aid understanding.
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