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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
31/01/2006 |
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Data da última atualização: |
31/01/2006 |
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Autoria: |
ANTONIO, H. V. (Ed.). |
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Título: |
Economics of rice. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Maligaya: Philippine Rice Research Institute, 2005. |
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Páginas: |
13 p. |
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Série: |
(PhilRice. Questions and Answers, 7). |
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ISSN: |
1655-2814 |
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Idioma: |
Inglês |
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Conteúdo: |
Palay prices, income, and competitiveness. Rice prices. Food security and Self-sufficiency in rice. Rice trade. Rice market. Lending. |
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Palavras-Chave: |
Competitividade. |
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Thesagro: |
Arroz; Economia; Mercado; Segurança Alimentar. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00654nam a2200205 a 4500
001 1677197
005 2006-01-31
008 2005 bl uuuu u0uu1 u #d
022 $a1655-2814
100 1 $aANTONIO, H. V. (Ed.).
245 $aEconomics of rice.
260 $aMaligaya: Philippine Rice Research Institute$c2005
300 $a13 p.
490 $a(PhilRice. Questions and Answers, 7).
520 $aPalay prices, income, and competitiveness. Rice prices. Food security and Self-sufficiency in rice. Rice trade. Rice market. Lending.
650 $aArroz
650 $aEconomia
650 $aMercado
650 $aSegurança Alimentar
653 $aCompetitividade
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
17/12/2008 |
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Data da última atualização: |
11/04/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - A |
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Autoria: |
VALE, M. M.; MOURA, D. J. de; NÄÄS, I. de A.; OLIVEIRA, S. R. de M.; RODRIGUES, L. H. A. |
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Afiliação: |
MARCOS MARTINEZ VALE, FEAGRI/UNICAMP; DANIELLA JORGE DE MOURA, FEAGRI/UNICAMP; IRENILZA DE ALENCAR NÄÄS, FEAGRI/UNICAMP; STANLEY ROBSON DE MEDEIROS OLIVEIRA, CNPTIA; LUIZ HENRIQUE ANTUNES RODRIGUES, FEAGRI/UNICAMP. |
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Título: |
Data mining to estimate broiler mortality when exposed to heat wave. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 65, n. 3, p. 223-229, May/June 2008. |
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DOI: |
http://dx.doi.org/10.1590/S0103-90162008000300001 |
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Idioma: |
Inglês |
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Conteúdo: |
Heat waves usually result in losses of animal production since they are exposed to thermal stress inducing an increase in mortality and consequent economical losses. Animal science and meteorological databases from the last years contain enough data in the poultry production business to allow the modeling of mortality losses due to heat wave incidence. This research analyzes a database of broiler production associated to climatic data, using data mining techniques such as attribute selection and data classification (decision tree) to model the impact of heat wave incidence on broiler mortality. The temperature and humidity index (THI) was used for screening environmental data. The data mining techniques allowed the development of three comprehensible models for estimating specifically high mortality during broiler production. Two models yielded a classification accuracy of 89.3% by using Principal Component Analysis (PCA) and Wrapper feature selection approaches. Both models obtained a class precision of 0.83 for classifying high mortality. When the feature selection was made by the domain experts, the model accuracy reached 85.7%, while the class precision of high mortality was 0.76. Meteorological data and the calculated THI from meteorological stations were helpful to select the range of harmful environmental conditions for broilers 29 and 42 days old. The data mining techniques were useful for building animal production models. |
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Palavras-Chave: |
Agropecuária; Dados ambientais; Data mining; ITU; Mineração de dados. |
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Thesagro: |
Frango de Corte. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/158853/1/AP-datamining-Valeetal-2008.pdf
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Marc: |
LEADER 02228naa a2200253 a 4500
001 1005708
005 2017-04-11
008 2008 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/S0103-90162008000300001$2DOI
100 1 $aVALE, M. M.
245 $aData mining to estimate broiler mortality when exposed to heat wave.$h[electronic resource]
260 $c2008
520 $aHeat waves usually result in losses of animal production since they are exposed to thermal stress inducing an increase in mortality and consequent economical losses. Animal science and meteorological databases from the last years contain enough data in the poultry production business to allow the modeling of mortality losses due to heat wave incidence. This research analyzes a database of broiler production associated to climatic data, using data mining techniques such as attribute selection and data classification (decision tree) to model the impact of heat wave incidence on broiler mortality. The temperature and humidity index (THI) was used for screening environmental data. The data mining techniques allowed the development of three comprehensible models for estimating specifically high mortality during broiler production. Two models yielded a classification accuracy of 89.3% by using Principal Component Analysis (PCA) and Wrapper feature selection approaches. Both models obtained a class precision of 0.83 for classifying high mortality. When the feature selection was made by the domain experts, the model accuracy reached 85.7%, while the class precision of high mortality was 0.76. Meteorological data and the calculated THI from meteorological stations were helpful to select the range of harmful environmental conditions for broilers 29 and 42 days old. The data mining techniques were useful for building animal production models.
650 $aFrango de Corte
653 $aAgropecuária
653 $aDados ambientais
653 $aData mining
653 $aITU
653 $aMineração de dados
700 1 $aMOURA, D. J. de
700 1 $aNÄÄS, I. de A.
700 1 $aOLIVEIRA, S. R. de M.
700 1 $aRODRIGUES, L. H. A.
773 $tScientia Agricola, Piracicaba$gv. 65, n. 3, p. 223-229, May/June 2008.
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Embrapa Agricultura Digital (CNPTIA) |
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