(a) Process . (b) Process of exceedances . (c)Residual noise, . (d) Trajectory of the random walk generated by . Note that the variance of residual noise, , is only 2.3% of total variance , despite the fact that exceedances, , occupy only 5% of the probability space.
Rosenfeld EURASIP Journal on Bioinformatics and Systems Biology 2009 2009:362309 doi:10.1155/2009/362309