Recycling by product massive number of types of plastic, they each carry a resin identification code, and must be sorted before they can be recycled. This can be costly; while metals can be sorted using electromagnets, no such 'easy sorting' capability exists for plastics. In addition to this, while labels do not need to be removed from bottles for recycling, lids are often made from a different kind of non-recyclable plastic. To help in identifying the materials in various plastic items, resin identification code numbers 1-6 have been assigned to six common kinds of recyclable plastic resins, with the number 7 indicating any
Nonlinear system identification methods, albeit asymptotically optimal, are computationally demanding and their use is limited to specific cases where the fundamental limitations of the employed particle filters can be avoided. An alternative solution is to apply the prediction error method using a sub-optimal predictor. The resulting estimator can be shown to be strongly consistent and asymptotically normal and can be evaluated using relatively simple algorithms. Nonlinear system identification System identification is a method of identifying or measuring the mathematical model of a system from measurements of the system inputs and outputs. The applications of system identification include any system where the inputs and