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Cardoso, M. G. M. S. & Chambel, L. (2005). A valuation model for cut diamonds. International Transactions of Operations Research. 12 (4), 417-436

M. M. Cardoso and L. M. Cardoso,  "A valuation model for cut diamonds", in Int. Transactions of Operations Research, vol. 12, no. 4, pp. 417-436, 2005

@article{cardoso2005_1734874056506,
	author = "Cardoso, M. G. M. S. and Chambel, L.",
	title = "A valuation model for cut diamonds",
	journal = "International Transactions of Operations Research",
	year = "2005",
	volume = "12",
	number = "4",
	doi = "10.1111/j.1475-3995.2005.00516.x",
	pages = "417-436",
	url = "https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1475-3995.2005.00516.x"
}

TY  - JOUR
TI  - A valuation model for cut diamonds
T2  - International Transactions of Operations Research
VL  - 12
IS  - 4
AU  - Cardoso, M. G. M. S.
AU  - Chambel, L.
PY  - 2005
SP  - 417-436
SN  - 0969-6016
DO  - 10.1111/j.1475-3995.2005.00516.x
UR  - https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1475-3995.2005.00516.x
AB  - 

Cut diamonds are hard to value given the number and type of properties used in price construction. This project aims to develop a valuation model for cut diamonds based on data published on the Internet. Regression trees (Classification and Regression Trees and Chi‐Square Automatic Interaction Detection) and neural networks (using backpropagation) are used for this purpose. The proposed approaches have a complementary role in the application. Neural networks have a better performance in prediction, accounting for around 96% of cut diamond unit prices variation. The role of regression trees is fundamental in interpretability, helping to understand the contribution of predictors in pricing. The models' results may prove to have some advantages over the Rapaport price lists (an industry‐wide adopted price indicator).
ER  -