Unlike nonlinear marketing, which can be highly interactive, linear marketing takes place regardless of how consumers respond. Consumers also generally do not seek out linear marketing.

Examples Frequent-flier miles are one example of a non-linear change. American Airlines introduced them as a new concept in the 1980s and gained an advantage over its competitors.

An algorithm is presented for nonlinear least squares estimation in which the parameters to be estimated can be regarded as all nonlinear (the traditional approach) or reclassified as linear-nonlinear ...