Within each stratum we applied a proportional random method to minimize sampling errors.
From the nature.com
Proportionate allocation uses a sampling fraction in each of the strata that is proportional to that of the total population.
From the en.wikipedia.org
Using this adaptive sampling technique, the amount of time it takes to construct an accurate Markov State Model is inversely proportional to the number of parallel simulations run.
From the en.wikipedia.org
As a consequence of the Nyquist-Shannon sampling theorem, any spatial waveform that can be displayed must consist of at least two pixels, which is proportional to image resolution.