power law

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Noun1.power law - (psychophysics) the concept that the magnitude of a subjective sensation increases proportional to a power of the stimulus intensity
law of nature, law - a generalization that describes recurring facts or events in nature; "the laws of thermodynamics"
psychophysics - the branch of psychology concerned with quantitative relations between physical stimuli and their psychological effects
References in periodicals archive ?
The power laws related to the distributions with computational issues and real life examples are presented in a chapter in the first part.
One of the generating processes for power laws is random growth.
Using the formula, they have been able to propose a more accurate estimation of shadow banking activities that could account for the drop off in assets by the top finance firms that deviate from power laws governing the growth of firms.
Her topics include time series invariants under boundedness, hierarchical order, invariant measure: power laws, sustainable evolution in an ever-changing environment, and the Second Law as a ban on perpetuum mobile.
It is unfortunate that power laws aren't introduced in most statistics courses; Ormerod (2005) lays a significant share of the blame for economic crashes on incorrect assumptions of Gaussian probability in financial risk models, when real risk is more long tailed.
A new analysis of transactions on the S&P 500 share index and the German DAX Future stock market also uncovered power laws at work.
European Energy Commissioner Guenther Oettinger, speaking to a conference in Berlin as the Bundestag (lower house) debated the package of power laws nearby; said Germany's neighbors were worried about its program of nuclear shutdowns by 2022.
DeVany's argument is not unique: it is part of a large and growing literature where claims of the ubiquity of power laws are legion.
13) In other words, power laws are tools that describe the divergence in the predictable and average value of an observable fact.
The exponent of the power laws increase with increasing filling factor, averaging 1.
But if you've got a truly flee market you only have a free market for a while before it becomes completely regulated by those aspects of it that have employed power laws to gain a complete monopoly.
The patterns found by the scientists are power laws, which describe mathematical relationships between the frequency of large and small events.