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Influence of Heartwood on Wood Density and Pulp Properties Explained by Machine Learning Techniques
Forests, 2017-01, Vol.8 (1), p.20-20
[Peer Reviewed Journal]
Copyright MDPI AG 2017 ;ISSN: 1999-4907 ;EISSN: 1999-4907 ;DOI: 10.3390/f8010020
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Title:
Influence of Heartwood on Wood Density and Pulp Properties Explained by Machine Learning Techniques
Author:
Iglesias, Carla
;
Santos, António
;
Martínez, Javier
;
Pereira, Helena
;
Anjos, Ofélia
Subjects:
Acacia melanoxylon
;
CART
;
heartwood
;
Multi-Layer Perceptron (MLP)
;
Multiple Linear Regression
;
pulp properties
;
Support Vector Machines (SVM)
Is Part Of:
Forests, 2017-01, Vol.8 (1), p.20-20
Description:
The aim of this work is to develop a tool to predict some pulp properties e.g., pulp yield, Kappa number, ISO brightness (ISO 2470:2008), fiber length and fiber width, using the sapwood and heartwood proportion in the raw-material. For this purpose, Acacia melanoxylon trees were collected from four sites in Portugal. Percentage of sapwood and heartwood, area and the stem eccentricity (in N-S and E-W directions) were measured on transversal stem sections of A. melanoxylon R. Br. The relative position of the samples with respect to the total tree height was also considered as an input variable. Different configurations were tested until the maximum correlation coefficient was achieved. A classical mathematical technique (multiple linear regression) and machine learning methods (classification and regression trees, multi-layer perceptron and support vector machines) were tested. Classification and regression trees (CART) was the most accurate model for the prediction of pulp ISO brightness (R = 0.85). The other parameters could be predicted with fair results (R = 0.64-0.75) by CART. Hence, the proportion of heartwood and sapwood is a relevant parameter for pulping and pulp properties, and should be taken as a quality trait when assessing a pulpwood resource.
Publisher:
Basel: MDPI AG
Language:
English
Identifier:
ISSN: 1999-4907
EISSN: 1999-4907
DOI: 10.3390/f8010020
Source:
ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals
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