I recently suggested new methods to the food engineering optimization, such as transforming experiment models into images and using decision tree methods. According to new methods I suggested, the optimal ranges that can produce the same optimal experimental results have been determined instead of the optimal constant variable values. Then, the centers of the ranges have been suggested as optimal constant value to reduce the effects of omitted minor variables of the experiments.
http://www.sciencedirect.com/science/article/pii/S0263224117306073
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