On Grading Work of Kaki (Diospyros Kaki L. cv. Fuyu)

Aptitude judgment of sorting person by applying Learning Curve, and effect of quality distribution in the lot of farm products on grading standard

Abstract

Aptitude judgment as sorting person of farm products was investigated by means of Learning curve, and then effect of quality distribution in lot on a standard of judgment for grading was clarified. The results were as follows:
1. Degree of fluctuation of grading standard and reduction of that by training differed between individuals
2. On aptitude as sorting person was passed judgment by learning ratio and initial value that was calculated by applying Log linear model.
3. The standard of grading was affected by quality distribution in sample lot, which was severe when the lot contained a high percetage of high quality products and was soft when that did a small percentage.