stationarity love

# stationarity

## Definitions

### from The Century Dictionary.

• noun The state or condition of a system in which the motions of its parts conform to the definition of stationary motion.

• noun The condition of being stationary
• noun mathematics The condition of a series in which the value at all points is the same; the stationary value itself

## Etymologies

Sorry, no etymologies found.

## Examples

• Economists and geologists have identified one culprit in the water-management problem, a mind-set they call "stationarity" — the belief that natural systems fluctuate within a narrow, predictable range, even over long periods.

• Using modern statistics you'd go even further and discover that the temperatures anomalies shown (which are a derivative of the the actual temperatues) show non-stationarity, meaning that they are not suitable for any kind of forecast.

RealClimate Ike Solem 2010

• Using modern statistics you'd go even further and discover that the temperatures anomalies shown (which are a derivative of the the actual temperatues) show non-stationarity, meaning that they are not suitable for any kind of forecast.

RealClimate Ike Solem 2010

• The past as a guide to the future assumes "stationarity" but, past events and their management may be informative

• Sims, Granger, and issues with stationarity, causality, and time aggregation in macro data (in an intermediate undergraduate course, you could give at best a superficial treatment of this topic).

• The NY Times piece does an absolute hatchet job to the concept of non-stationarity and cointegration and incorrectly asserts that Robert Engle was awarded the nobel prize for his work on cointegration.

Clive Granger 2009

• The order of non-stationarity refers to the number of times a variable must be differenced (d) to render it stationary, in which case the variable is integrated of order, d, or I(d).

Archive 2010-03-01 EliRabett 2010

• The order of non-stationarity refers to the number of times a variable must be differenced (d) to render it stationary, in which case the variable is integrated of order, d, or I(d).

Idiots Delight EliRabett 2010

• Even the stationarity principal that some trees respond the same now as they did in the past is indoubt.

• But the effect of the stationarity fallacy has been to leave water policy in the hands of relatively shortsighted municipal and state authorities, while the federal government has been looking the other way.