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| Registros recuperados : 895 | |
| 43. |  | NASCIMENTO, M. L.; LAHR, F. R. Analise de sistemas estruturais e construtivos de pontes de madeira. In: CONGRESSO FLORESTAL PANAMERICANO, 1.; CONGRESSO FLORESTAL BRASILEIRO, 7., 1993, Curitiba. Floresta para o Desenvolvimento: Política, Ambiente, Tecnologia e Mercado: anais. São Paulo: SBS; [S.l.]: SBEF, 1993. v.2, p.771.| Biblioteca(s): Embrapa Florestas. |
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| 54. | | NASCIMENTO, M. T.; SILVA, G. C. da. Efeitos do corte seletivo de madeira na estrutura e diversidade arborea de um remanescente de mata de tabuleiro no norte fluminense. Serie Tecnica IPEF, Piracicaba, v. 12, n. 32, p. 144-145, 1998. Edicao das Memorias do Simposio sobre Ecologia e Manejo de Fragmentos Florestais, 2., 1998, Piracicaba. Resumo dos paineis.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 895 | |
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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
|
Biblioteca(s): |
Embrapa Agricultura Digital. |
|
Data corrente: |
23/12/1998 |
|
Data da última atualização: |
20/01/2020 |
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Autoria: |
NASCIMENTO, M. A.; CUNHA, A. C. R. da. |
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Afiliação: |
MARIO A. NASCIMENTO, CNPTIA; ADRIANO C. R. DA CUNHA, IC/UNICAMP. |
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Título: |
An experiment stemming non-traditional text. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
In: STRING PROCESSING AND INFORMATION RETRIEVAL: A SOUTH AMERICAN SYMPOSIUM, 1998, Santa Cruz de la Sierra. Proceedings... Los Alamitos: IEEE Computer Society, 1998. |
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Páginas: |
p. 75-80. |
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DOI: |
10.1109/SPIRE.1998.712985 |
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Idioma: |
Inglês |
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Conteúdo: |
Stemming is a technique which aims to extract common suffixes of words. Thus, words which are literally different but have a commom stem, may be abstracted by their common stem. The underlying goal when using a stemming techniques is to improve recall, at the possible expense of precision loss. A well known technique for stemming text is Porter's algorithm, which is based on a set of rules extracted from the English language. In this paper, we argue that such an algorithm it is not efficient for non-traditional texts, e.g., one made up mainly of medical terms. We thus investigate the use of a technique, called Peak-and-Plateau, which is based on tries, and compare it to Porter's algorithm. Our experiments have shown that using Porter's algorithm or none at all makes no difference as far as precision and recall goes. On the other hand, using the Peak-and Plateau technique we improved recall by about 15% and decreased precision by an average of 40%. Moreover, it compressed the original text by 40% and the inverted file by 45%. |
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Palavras-Chave: |
Recuperação de informação; Stemming. |
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Thesaurus NAL: |
Information retrieval. |
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Categoria do assunto: |
-- |
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Marc: |
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008 1998 bl uuuu u00u1 u #d
024 7 $a10.1109/SPIRE.1998.712985$2DOI
100 1 $aNASCIMENTO, M. A.
245 $aAn experiment stemming non-traditional text.$h[electronic resource]
260 $aIn: STRING PROCESSING AND INFORMATION RETRIEVAL: A SOUTH AMERICAN SYMPOSIUM, 1998, Santa Cruz de la Sierra. Proceedings... Los Alamitos: IEEE Computer Society$c1998
300 $ap. 75-80.
520 $aStemming is a technique which aims to extract common suffixes of words. Thus, words which are literally different but have a commom stem, may be abstracted by their common stem. The underlying goal when using a stemming techniques is to improve recall, at the possible expense of precision loss. A well known technique for stemming text is Porter's algorithm, which is based on a set of rules extracted from the English language. In this paper, we argue that such an algorithm it is not efficient for non-traditional texts, e.g., one made up mainly of medical terms. We thus investigate the use of a technique, called Peak-and-Plateau, which is based on tries, and compare it to Porter's algorithm. Our experiments have shown that using Porter's algorithm or none at all makes no difference as far as precision and recall goes. On the other hand, using the Peak-and Plateau technique we improved recall by about 15% and decreased precision by an average of 40%. Moreover, it compressed the original text by 40% and the inverted file by 45%.
650 $aInformation retrieval
653 $aRecuperação de informação
653 $aStemming
700 1 $aCUNHA, A. C. R. da
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