Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileira
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Economia Aplicada |
Texto Completo: | https://www.revistas.usp.br/ecoa/article/view/219788 |
Resumo: | This paper presents some non-linear estimates for the Brazilian import demand equation using artificial neural networks. The estimations use quarterly data from 1978 until 1999. Estimations are performed for total and intermediate goods imports and try to measure the sensibility ofthe network output to impulses in the input variables. This sensibility analysis in done using impulses on both each data and clusters of data. The main results show that there exists a non-linear relationship between the variables and that there has been a structural change in 1989 and 1994. Mainly after 1990 the most significant variables are the GDP and the exchange rate, with little relevance for the capacity utilization variable. From 1978 to 1988 all input variables have less significance, but the exchange rate seems to be the most relevant, followed by the capacity utilization, that is important for intermediate goods imports only. |
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oai:revistas.usp.br:article/219788 |
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USP-21 |
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Economia Aplicada |
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Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileiraneural networksimport demandimport elasticitiesThis paper presents some non-linear estimates for the Brazilian import demand equation using artificial neural networks. The estimations use quarterly data from 1978 until 1999. Estimations are performed for total and intermediate goods imports and try to measure the sensibility ofthe network output to impulses in the input variables. This sensibility analysis in done using impulses on both each data and clusters of data. The main results show that there exists a non-linear relationship between the variables and that there has been a structural change in 1989 and 1994. Mainly after 1990 the most significant variables are the GDP and the exchange rate, with little relevance for the capacity utilization variable. From 1978 to 1988 all input variables have less significance, but the exchange rate seems to be the most relevant, followed by the capacity utilization, that is important for intermediate goods imports only.Universidade de São Paulo, FEA-RP/USP2001-08-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/ecoa/article/view/21978810.11606/1413-8050/ea219788Economia Aplicada; Vol. 5 Núm. 4 (2001); 645-693Economia Aplicada; Vol. 5 No. 4 (2001); 645-693Economia Aplicada; v. 5 n. 4 (2001); 645-6931980-53301413-8050reponame:Economia Aplicadainstname:Universidade de São Paulo (USP)instacron:USPporhttps://www.revistas.usp.br/ecoa/article/view/219788/200650Copyright (c) 2001 Economia Aplicadahttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessSilva, Alexandre Bandeira Monteiro e Portugal, Marcelo Savino Cechin, Adelmo Luis 2023-12-06T19:11:56Zoai:revistas.usp.br:article/219788Revistahttps://www.revistas.usp.br/ecoaPUBhttps://www.revistas.usp.br/ecoa/oai||revecap@usp.br1980-53301413-8050opendoar:2023-12-06T19:11:56Economia Aplicada - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileira |
title |
Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileira |
spellingShingle |
Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileira Silva, Alexandre Bandeira Monteiro e neural networks import demand import elasticities |
title_short |
Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileira |
title_full |
Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileira |
title_fullStr |
Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileira |
title_full_unstemmed |
Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileira |
title_sort |
Redes neurais artificiais e análise de sensibilidade: uma aplicação à demanda de importancões brasileira |
author |
Silva, Alexandre Bandeira Monteiro e |
author_facet |
Silva, Alexandre Bandeira Monteiro e Portugal, Marcelo Savino Cechin, Adelmo Luis |
author_role |
author |
author2 |
Portugal, Marcelo Savino Cechin, Adelmo Luis |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Silva, Alexandre Bandeira Monteiro e Portugal, Marcelo Savino Cechin, Adelmo Luis |
dc.subject.por.fl_str_mv |
neural networks import demand import elasticities |
topic |
neural networks import demand import elasticities |
description |
This paper presents some non-linear estimates for the Brazilian import demand equation using artificial neural networks. The estimations use quarterly data from 1978 until 1999. Estimations are performed for total and intermediate goods imports and try to measure the sensibility ofthe network output to impulses in the input variables. This sensibility analysis in done using impulses on both each data and clusters of data. The main results show that there exists a non-linear relationship between the variables and that there has been a structural change in 1989 and 1994. Mainly after 1990 the most significant variables are the GDP and the exchange rate, with little relevance for the capacity utilization variable. From 1978 to 1988 all input variables have less significance, but the exchange rate seems to be the most relevant, followed by the capacity utilization, that is important for intermediate goods imports only. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-08-20 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/ecoa/article/view/219788 10.11606/1413-8050/ea219788 |
url |
https://www.revistas.usp.br/ecoa/article/view/219788 |
identifier_str_mv |
10.11606/1413-8050/ea219788 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/ecoa/article/view/219788/200650 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2001 Economia Aplicada http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2001 Economia Aplicada http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo, FEA-RP/USP |
publisher.none.fl_str_mv |
Universidade de São Paulo, FEA-RP/USP |
dc.source.none.fl_str_mv |
Economia Aplicada; Vol. 5 Núm. 4 (2001); 645-693 Economia Aplicada; Vol. 5 No. 4 (2001); 645-693 Economia Aplicada; v. 5 n. 4 (2001); 645-693 1980-5330 1413-8050 reponame:Economia Aplicada instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Economia Aplicada |
collection |
Economia Aplicada |
repository.name.fl_str_mv |
Economia Aplicada - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
||revecap@usp.br |
_version_ |
1800221693544759296 |