The algorithm simulated the effect of coefficient adjustment on the classifier result, chose the best direction of the classifier result and designed the optimization mechanism.

In the new algorithm, a time-variant forgetting factor is introduced to estimate the Mean Square Er-ror (MSE) and change the updating direction of adaptive filter coefficient vector.

In chemical flooding, consistency coefficient of the oil displacement agent declines exponentially, the power law exponent increases linearly in the direction of percolation flow.