Classification Trees
Mostrando 1-12 de 99 artigos, teses e dissertações.
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1. ECG Signals Classification Using Overlapping Variables to Detect Atrial Fibrillation
ABSTRACT In the present work a method for the detection of the cardiac pathology known as atrial fibrillation is proposed by calculating different information, statistics and other nonlinear measures over ECG signals. The original database contains records corresponding to patients who are diagnosed with this disease as well as healthy subjects. To formulate
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. Inter-relações entre preditores de eutrofização em reservatórios do semiárido brasileiro: como mensurar? Uma aplicação de aprendizado de máquina por árvores de decisão
RESUMO Um problema emergente para a segurança hídrica consiste nas consequências da eutrofização sobre a qualidade das águas. Metodologias de regressão convencionais não têm sido suficientes para explicar satisfatoriamente a complexidade da relação entre as variáveis hidrológicas e limnológicas desse processo. Nessa perspectiva, esta pesquisa b
Engenharia Sanitaria e Ambiental. Publicado em: 2022
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3. Monitoring Pyricularia sp. airborne inoculum in Passo Fundo, Rio Grande do Sul, Brazil
RESUMO O fungo Pyricularia sp. agente causal da brusone do trigo, produz conídios hialinos, secos e leves que podem ser removidos das lesões esporulativas pelo vento, e transportados a longas distâncias. Foram conduzidos experimentos com o objetivo de determinar (a) a relação entre variáveis meteorológicas e a quantidade de conídios de Pyricularia sp
Summa phytopathol.. Publicado em: 17/01/2020
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4. Morfometría de copa en Prosopis alba Griseb
Abstract The morphometric relations allow describing and characterizing the dimensions of trees, stands without prior knowledge of the age and have utility in silvicultural management, forest monitoring and productivity, especially when there is a premise of making a sustainable use of forests. The objectives of the present study were to determine the morpho
Ciênc. Florest.. Publicado em: 30/09/2019
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5. SITE INDEX FOR PROSOPIS ALBA PLANTATIONS IN THE SEMI-ARID CHACO THROUGH MIXED MODELS
ABSTRACT The classification of sites through curves of Site Index allows to predict the yield of the planted forests at a certain age of the stand and to plan cultural treatments. The goal of this research was to compare linear and non-linear models of fixed effects vs. mixed non-linear models to estimate the site index in plantations of Prosopis alba var Gr
CERNE. Publicado em: 09/09/2019
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6. Artificial neural networks, quantile regression, and linear regression for site index prediction in the presence of outliers
Resumo: O objetivo deste trabalho foi comparar métodos para obtenção do índice de sítio para povoamentos de eucalipto (Eucalyptus spp.), bem como avaliar seus impactos na estabilidade desse índice em bases de dados com e sem a presença de “outliers”. Foram testados três métodos, com uso de regressão linear, regressão quantílica e rede neural
Pesq. agropec. bras.. Publicado em: 27/05/2019
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7. Breast cancer diagnosis based on mammary thermography and extreme learning machines
Abstract Introduction Breast cancer is the most common cancer in women and one of the major causes of death from cancer among female around the world. The early detection and treatment are the major way to healing. The use of mammary thermography in Mastology is increasing as a complementary imaging technique to early detect lesions. Its use as a screening
Res. Biomed. Eng.. Publicado em: 05/03/2018
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8. Characterisation of a rare, reassortant human G10P[14] rotavirus strain detected in Honduras
BACKGROUND Although first detected in animals, the rare rotavirus strain G10P[14] has been sporadically detected in humans in Slovenia, Thailand, United Kingdom and Australia among other countries. Earlier studies suggest that the strains found in humans resulted from interspecies transmission and reassortment between human and bovine rotavirus strains. OB
Mem. Inst. Oswaldo Cruz. Publicado em: 2018-01
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9. Nutrition facts and limits for micronutrients in tree species used in urban forestry
ABSTRACT There is a huge lack of researches that evaluate the nutritional limits in tree species used in urban forestry, especially in terms of micronutrients. This study aimed to establish limits and range of micronutrients levels for the proper development of tree species utilized in urban forestry. The study was conducted in the city of Santa Maria-RS-Bra
An. Acad. Bras. Ciênc.. Publicado em: 14/08/2017
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10. Genome-wide identification, classification and transcriptional analysis of nitrate and ammonium transporters in Coffea
Abstract Nitrogen (N) is quantitatively the main nutrient required by coffee plants, with acquisition mainly by the roots and mostly exported to coffee beans. Nitrate (NO3–) and ammonium (NH4+) are the most important inorganic sources for N uptake. Several N transporters encoded by different gene families mediate the uptake of these compounds. They have an
Genet. Mol. Biol.. Publicado em: 10/04/2017
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11. Fatores preditivos de fibrilação atrial no pós-operatório de revascularização do miocárdio
RESUMO Objetivo Analisar as variáveis demográficas e perioperatórias preditivas de fibrilação atrial pós-operatória em pacientes brasileiros submetidos exclusivamente à cirurgia de revascularização do miocárdio. Métodos Trata-se de coorte retrospectiva. A amostra foi constituída de 105 prontuários de pacientes submetidos exclusivamente à r
Einstein (São Paulo). Publicado em: 2016-12
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12. Identification of commercial blocks of outstanding performance of sugarcane using data mining
ABSTRACT In order to achieve more efficient agricultural production systems, studies relating to the patterns of influence factors on commercial blocks of outstanding performance can be performed to assist management practices. The performance is considered to be the difference between the yield of a given block and the average yield of the homogeneous group
Eng. Agríc.. Publicado em: 2016-10