Recurrence

From Wikipedia, the free encyclopedia

Recurrence is the instance of recurring; frequent occurrence. Similarly, recurrent is an adjective for something that occurs time after time. It can be measured as a frequency. Examples of recurrence are:

• Earthquakes
• Volcano eruptions
• Return of cancer in a patient after treatment

Recurrence and recurrent may also be used in reference to:

• Recurrence relation, an equation which defines a sequence recursively
• Poincaré recurrence theorem, Henri Poincaré's theorem on dynamical systems
• Recurrence plot, a statistical plot that shows a pattern that re-occurs
• Recurrent neural network, a special artificial neural network
• Recurrent rotation, a term used in contemporary hit radio for frequently aired songs