A method to estimate the robustness of the secondary refined copper supply function

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dc.contributor.authorRivera, Nilza
dc.contributor.authorIgnacio Guzman, Juan
dc.contributor.authorLagos, Gustavo
dc.date.accessioned2025-01-20T20:21:51Z
dc.date.available2025-01-20T20:21:51Z
dc.date.issued2023
dc.description.abstractKnowing the factors that influence the secondary refined copper supply behavior has been fundamental in generating a copper market model and developing public and corporate policies. When analyzing the explanatory variables used in the existing models in the literature, it is possible to observe high variability in estimating the parameters when modifying the availability of information or changing the observation period. Based on this, we argue that only some explanatory variables will have robust estimated parameters, which means that they are unbiased, stable (i.e., they do not vary significantly when the specification of the equation or the number of observations changes), and with asymptotic convergence over time. This work defines and validates a method to select robust explanatory variables capable of quantifying the refined secondary supply of copper (or any other variable) in a given period. Using a database with 23 explanatory variables in the period 1960-2017, we characterize the estimated parameters with high and low robustness, thus supporting the proposed hypothesis. The results obtained allowed identifying those variables with low uncertainty in estimating their parameters, with a high statistical significance, and with a low standard deviation. This allows to obtain a robust function for the secondary refined copper supply in the long term, capturing essential elements of reality.
dc.fuente.origenWOS
dc.identifier.doi10.1007/s13563-022-00308-4
dc.identifier.eissn2191-2211
dc.identifier.issn2191-2203
dc.identifier.urihttps://doi.org/10.1007/s13563-022-00308-4
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92647
dc.identifier.wosidWOS:000763241000001
dc.issue.numero2
dc.language.isoen
dc.pagina.final277
dc.pagina.inicio255
dc.revistaMineral economics
dc.rightsacceso restringido
dc.subjectParameter stability
dc.subjectRobustness
dc.subjectEstimated parameters
dc.subjectCopper scrap
dc.subjectEconometric model
dc.subjectSecondary production
dc.subject.ods12 Responsible Consumption and Production
dc.subject.ods07 Affordable and Clean Energy
dc.subject.ods13 Climate Action
dc.subject.ods09 Industry, Innovation and Infrastructure
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa12 Producción y consumo responsable
dc.subject.odspa07 Energía asequible y no contaminante
dc.subject.odspa13 Acción por el clima
dc.subject.odspa09 Industria, innovación e infraestructura
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleA method to estimate the robustness of the secondary refined copper supply function
dc.typeartículo
dc.volumen36
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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