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Descripción
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| To value the cork economically it is necessary to classify it in categories following two variables, the caliber (or thickness of the plank) and the quality. The quality is evaluated visually in a subjective way according to the number and type of anomalies that it presents (cracks, attacks of insects, etc.). This classification is carried out by expert operatives that, after evaluating the plank visually, determine the category according their experience and common sense. The cork anomalies or defects that alter its quality can be due to genetic or environmental causes. So far, their characterization has been studied with more or less detail, although without studying their concrete effect on the quality of the cork. In this work, we study the factors that define the classification of the cork in thickness/quality categories, and propose a procedure for visual evaluation of anomalies. Classic statistical techniques (polychotomous regression) are applied for the development of models imitating the classification process as made by the experts. The results are a set of mathematical models that allow the classification of cork probes (size 20 x 20 cm) in two or four categories, with percentage of success varying from 89.6% to 57.4%. | |
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Internacional
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Si |
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DOI
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Edición del Libro
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0 |
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Editorial del Libro
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ISBN
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84-923581-3-0 |
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Serie
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Título del Libro
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Alcornocales e industria corchera / Cork oak wood lands and cork industry |
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Desde página
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276 |
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Hasta página
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290 |