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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
26/08/1992 |
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Data da última atualização: |
26/08/1992 |
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Autoria: |
OLIVEIRA, E. de A. |
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Título: |
Automacao dos indices das tabelas da Classificacao Decima Universal. |
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Ano de publicação: |
1973 |
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Fonte/Imprenta: |
Rio de Janeiro: Universidade Federal do Rio de Janeiro, 1973. |
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Páginas: |
23p. |
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Idioma: |
Português |
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Notas: |
Tese de Mestrado. |
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Conteúdo: |
Processamento de indices; Aplicacao do indice KWIC; Automacao dos indices das tabelas da CDU. |
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Palavras-Chave: |
Bibliotecas; CDU; Classificacao Decimal Universal; Computers use; Informacao; Mechanized retrieval; Recuperacao; UDC; Universal Decimal Classification. |
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Thesagro: |
Automação. |
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Thesaurus Nal: |
information; libraries. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00853nam a2200277 a 4500
001 1459146
005 1992-08-26
008 1973 bl uuuu m 00u1 u #d
100 1 $aOLIVEIRA, E. de A.
245 $aAutomacao dos indices das tabelas da Classificacao Decima Universal.
260 $aRio de Janeiro: Universidade Federal do Rio de Janeiro$c1973
300 $a23p.
500 $aTese de Mestrado.
520 $aProcessamento de indices; Aplicacao do indice KWIC; Automacao dos indices das tabelas da CDU.
650 $ainformation
650 $alibraries
650 $aAutomação
653 $aBibliotecas
653 $aCDU
653 $aClassificacao Decimal Universal
653 $aComputers use
653 $aInformacao
653 $aMechanized retrieval
653 $aRecuperacao
653 $aUDC
653 $aUniversal Decimal Classification
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Registro original: |
Embrapa Soja (CNPSO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agricultura Digital. Para informações adicionais entre em contato com cnptia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
23/08/2021 |
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Data da última atualização: |
10/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
BARBEDO, J. G. A. |
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Afiliação: |
JAYME GARCIA ARNAL BARBEDO, CNPTIA. |
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Título: |
Deep learning applied to plant pathology: the problem of data representativeness. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Tropical Plant Pathology, v. 47, n. 1, p. 85-94, Feb. 2022. |
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DOI: |
https://doi.org/10.1007/s40858-021-00459-9 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract. The rise of deep learning techniques has profoundly impacted both research and applications of pattern and object recognition in digital images. In plant pathology, the number of scientific articles on the use of deep learning for disease classification using images has grown steadily for at least a decade and targeted most important agricultural crops. Results have been encouraging, with accuracies of many prediction models usually approaching 100%. It is now widely accepted that, enough data being available, deep learning models can solve most of the image classification problems. However, determining what "enough" means in each context is far from trivial because this involves not only the number of samples used for training, but also the quality, in particular the representativeness of the dataset. More important than having a large sample size is to guarantee that all the variability associated to a given classification problem is represented in the dataset. Achieving this goal is particularly challenging for plant disease images because the agricultural environment is non-structured and highly dynamic, containing numerous variables that introduce variability to the problem. To make matters even more difficult, image annotation is time consuming and prone to inconsistencies due to its subjectivity. As a result, all studies in the literature employ datasets that represent only a fraction of the whole range of the variability, and many of these do not even acknowledge the limitations of the experimental conditions. Experiments with limited scope are valuable in the early stages of emerging research topics, but the application of deep learning to plant pathology has matured to the point where new studies need to contribute something more substantial. Unfortunately, many of the recent publications have been redundant, differing from previous research only by the adoption of slightly different experimental setups and improved model architectures. To move forward, new studies in this field need to address the data gap problem more effectively. This article delves deep into some technical and practical issues to achieve this goal and to increase the usefulness of the future studies. Although this article is dedicated primarily to proximal images, many of the remarks also hold for images captured using unmanned aerial vehicles. MenosAbstract. The rise of deep learning techniques has profoundly impacted both research and applications of pattern and object recognition in digital images. In plant pathology, the number of scientific articles on the use of deep learning for disease classification using images has grown steadily for at least a decade and targeted most important agricultural crops. Results have been encouraging, with accuracies of many prediction models usually approaching 100%. It is now widely accepted that, enough data being available, deep learning models can solve most of the image classification problems. However, determining what "enough" means in each context is far from trivial because this involves not only the number of samples used for training, but also the quality, in particular the representativeness of the dataset. More important than having a large sample size is to guarantee that all the variability associated to a given classification problem is represented in the dataset. Achieving this goal is particularly challenging for plant disease images because the agricultural environment is non-structured and highly dynamic, containing numerous variables that introduce variability to the problem. To make matters even more difficult, image annotation is time consuming and prone to inconsistencies due to its subjectivity. As a result, all studies in the literature employ datasets that represent only a fraction of the whole range of the variability, and many of these do not even ackno... Mostrar Tudo |
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Palavras-Chave: |
Análise de imagem; Aprendizado profundo; Conjunto de dados de imagem; Deep learning; Disease recognition; Image datasets; Reconhecimento de doença. |
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Thesagro: |
Doença de Planta. |
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Thesaurus NAL: |
Digital images; Image analysis; Plant diseases and disorders. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03227naa a2200265 a 4500
001 2133807
005 2022-03-10
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s40858-021-00459-9$2DOI
100 1 $aBARBEDO, J. G. A.
245 $aDeep learning applied to plant pathology$bthe problem of data representativeness.$h[electronic resource]
260 $c2022
520 $aAbstract. The rise of deep learning techniques has profoundly impacted both research and applications of pattern and object recognition in digital images. In plant pathology, the number of scientific articles on the use of deep learning for disease classification using images has grown steadily for at least a decade and targeted most important agricultural crops. Results have been encouraging, with accuracies of many prediction models usually approaching 100%. It is now widely accepted that, enough data being available, deep learning models can solve most of the image classification problems. However, determining what "enough" means in each context is far from trivial because this involves not only the number of samples used for training, but also the quality, in particular the representativeness of the dataset. More important than having a large sample size is to guarantee that all the variability associated to a given classification problem is represented in the dataset. Achieving this goal is particularly challenging for plant disease images because the agricultural environment is non-structured and highly dynamic, containing numerous variables that introduce variability to the problem. To make matters even more difficult, image annotation is time consuming and prone to inconsistencies due to its subjectivity. As a result, all studies in the literature employ datasets that represent only a fraction of the whole range of the variability, and many of these do not even acknowledge the limitations of the experimental conditions. Experiments with limited scope are valuable in the early stages of emerging research topics, but the application of deep learning to plant pathology has matured to the point where new studies need to contribute something more substantial. Unfortunately, many of the recent publications have been redundant, differing from previous research only by the adoption of slightly different experimental setups and improved model architectures. To move forward, new studies in this field need to address the data gap problem more effectively. This article delves deep into some technical and practical issues to achieve this goal and to increase the usefulness of the future studies. Although this article is dedicated primarily to proximal images, many of the remarks also hold for images captured using unmanned aerial vehicles.
650 $aDigital images
650 $aImage analysis
650 $aPlant diseases and disorders
650 $aDoença de Planta
653 $aAnálise de imagem
653 $aAprendizado profundo
653 $aConjunto de dados de imagem
653 $aDeep learning
653 $aDisease recognition
653 $aImage datasets
653 $aReconhecimento de doença
773 $tTropical Plant Pathology$gv. 47, n. 1, p. 85-94, Feb. 2022.
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