Dissimilarity Measures
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Um estudo sobre o papel de medidas de similaridade em visualização de coleções de documentos / A study on the role of similarity measures in visual text analytics
Information visualization techniques, such as similarity based point placement, are used for generating of visual data representation that evidence some patterns. These techniques are sensitive to data quality, which depends of a very influential preprocessing step. This step involves cleaning the text and in some cases, detecting terms and their weights, as
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/09/2012
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2. Divergencia genetica entre os genitores da populacao de arroz irrigado CNA-IRAT 4.
Com o objetivo de avaliar a divergencia genetica entre as dez variedades genitoras da populacao de arroz irrigado CNA-IRAT 4, foram utilizados dados de dez caracteristicas obtidas em experiment conduzido em Goianira, GO, em delineamento de blocos ao acaso com quatro repeticoes. Utilizando-se analises de variaveis canonicas e tecnicas de agrupamento por meio
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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3. Categorização de dados quantitativos para estudos de diversidade genética / Categorization quantitative data for studies of genetic diversity
O estudo da divergência genética é uma ferramenta importante na identificação de indivíduos geneticamente divergentes que, ao serem combinados, possam aumentar o efeito heterótico na progênie. Uma técnica estatística muito aplicada nesse tipo de estudo é a análise de agrupamento. Entretanto, antes dessa técnica ser empregada, deve ser obtida uma
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2010
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4. Estratégias para análise do comportamento de genótipos de soja ao nematoide de cistos (Heterodera glycines) / Strategies for analysis the behavior of soybean genotypes to the cyst nematode (Heterodera glycines)
The objectives of this study were the following ones: to evaluate the stability of the soybean cyst nematode race (H. glycines) from the Nematode Bank of the Soybean Breeding Program by the Federal University of Viçosa (NBSBP-FUV), that is kept under greenhouse conditions; to select the soybean genotypes that were originated by one-single pod descending met
Publicado em: 2009
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5. Multivariate classification trees based on dissimilarity and entropy coefficients / Árvores de classificação multivariadas fundamentadas em coeficientes de dissimilaridade e entropia.
The statistical analysis of large datasets requires the use of flexible methodologies, that can provide insight and understanding even in the presence of difficulties such as large numbers of variables having variable levels of association between themselves, and missing data. The construction of classification and regression trees allows for modeling of a c
Publicado em: 2008
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6. MÃtodos de agrupamento de dados simbÃlicos baseados em funÃÃes de proximidade
Com a crescente quantidade de informaÃÃes produzidas pelas diversas atividades humanas, tem se tornado cada vez mais importante agregar, tratar e manipular grandes massas de dados de modo a definir conceitos e extrair conhecimento destes dados. Esses conceitos podem ser descritos por dados mais complexos, chamados dados simbÃlicos. Nesse contexto, surge a
Publicado em: 2008
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7. Morphological characterization, yield performance and genetic divergence of genotypes of sweet potato. / Caracterização morfológica, desempenho produtivo e divergência genética de genótipos de batata-doce.
Aiming to characterize morphologically the genotypes of sweet potato, to estimate the genetic divergence and to evaluate the yield performance in the edaphoclimatics conditions in the municipality of Junqueiro, Alagoas, Brazil, an experiment was developed, consisting of two varieties and nine clones, in the randomized blocks design with three replications. F
Publicado em: 2008
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8. Quem são os extrativistas? Perfil dos pescadores e da atividade pesqueira na Reserva Extrativista Marinha de Corumbau - BA.
The Extractive Reserve was initially created as a handling category proposal around 1989, and in 2000 became a direct use conservation unit with the creation of SNUC (National System of Conservation Units). Since then, it has been possible to observe an increasing rise in the number of conservation units of this category, for whom the handling plan must cons
Publicado em: 2006
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9. Mapas de ligação e identificação de Locos Controladores de Características Quantitativas (QTLs) associados à resistência a Crinipellis perniciosa em acessos de cacaueiro (Theobroma cacao) originários da Amazônia Brasileira / Linkage Maps and Identification of Quantitative Trait Loci (QTL) associated with resistance to Crinipellis perniciosa in cacao (Theobroma cacao) acessions from the Brazilian Amazon
The witches broom (Crinipellis perniciosa) is the most important disease of cacao in Brazil. The main method of disease control is the use of resistant cultivars, however due to the narrow genetic basis found in commercial cacao growing areas, the resistance is frequently broken. The objectives of this work were: to select new sources of resistance to C. p
Publicado em: 2006
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10. Evaluation of genetic divergence among lines of laying hens using cluster analysis
Cluster analysis was used to investigate the genetic divergence among five lines of laying hens. The following traits were evaluated: body weight at 40, 48 and 56 weeks of age; egg weight at 40, 44, 52 and 60 weeks of age; and laying rate from 40 to 60 weeks of age. Three groups were formed when data were analyzed by the single-linkage hierarchical method us
Revista Brasileira de Ciência Avícola. Publicado em: 2005-06
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11. Dissimilarity fuctions analysis based on dynamic clustering for symbolic data
Symbolic Data Analysis (SDA) is a new domain in the area of knowledge discovery that aims to provide suitable methods for data described through multi-valued variables, where there are sets of categories, intervals, or weight (probability) distributions in the cells of the data tables. These new variables enable representing the variability and uncertainty p
Publicado em: 2005
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12. Avaliação da diversidade genética de populações de fáfia (Pfaffia glomerata (Spreng.) Pedersen) por RAPD, caracteres morfológicos e teor de beta-ecdisona / Genetic diversity of pfaffia populations (Pfaffia glomerata (Spreng.) Pedersen) by RAPD, morphological characters and ß-ecdisone contents
Pfaffia (Pfaffia glomerata (Spreng.) Pedersen) is a native species of South America with widespread occurrence in the States of Paraná, Mato Grosso do Sul and Goiás. Its economic value is mainly due to the similarity of their phytochemical characteristics to the Korean-ginseng (Panax ginseng). Research institutions are carrying out continual germplasm coll
Publicado em: 2005