Decision Trees
Mostrando 25-36 de 60 artigos, teses e dissertações.
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25. PADRÕES DE CRESCIMENTO E PREDIÇÃO DA ESTRUTURA DIAMÉTRICA COM AUXÍLIO DE BANDAS DENDROMÉTRICAS NA FLORESTA NACIONAL DE CAXIUANÃ - PA
In forest management it is fundamental that those in charge know how to plan the logging activities grounded on statistical tools so they can diminish error margins in important decision making situations. Knowledge about informations of growth pattern and diameter distribution projection leads to optimization of the production process. It is so because thos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2008
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26. A machine learning approach to automatic music genre classification
This paper presents a non-conventional approach for the automatic music genre classification problem. The proposed approach uses multiple feature vectors and a pattern recognition ensemble approach, according to space and time decomposition schemes. Despite being music genre classification a multi-class problem, we accomplish the task using a set of binary c
Journal of the Brazilian Computer Society. Publicado em: 2008-09
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27. Aplicação de técnicas de mineração de dados em problemas de classificação de padrões
The Knowledge Discovery in Databases (KDD) process, which includes the data mining phase, has been widely used as a tool to assist decision-making in areas such as banking credit and medical predictions. In this work this process is studied with the objective of evaluating the use of data mining methods in areas of electrical engineering, considering data ob
Publicado em: 2008
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28. Uso de medidas de desempenho e de grau de interesse para análise de regras descobertas nos classificadores
The process of knowledge discovery in databases has become necessary because of the large amount of data currently stored in databases of companies. They operated properly can help the managers in decision-making in organizations. This process is composed of several steps, among them there is a data mining, stage where they are applied techniques for obtaini
Publicado em: 2008
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29. SMOOTH TRANSITION LOGISTIC REGRESSION MODEL TREE / MODELO DE REGRESSÃO LOGÍSTICA COM TRANSIÇÃO SUAVE ESTRUTURADO POR ÁRVORE (STLR-TREE)
The main goal of this work is to adapt the STR-Tree model, which is the combination of a Smooth Transition with Regression model with Classi cation and Regression Tree (CART), in order to use it in Classification. Some changes were made in its structural form and in the estimation. Due to the fact we are doing binary dependent variables classification, is ne
Publicado em: 2008
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30. Application of data mining techniques to TCP/IP network traffic logs analysis / Aplicação de técnicas de data mining para a análise de logs de trafégo TCP/IP
Since the popularization of the Internet in recent years, the amount and variety of computer network services has greatly increased. At the same time new methods to commit crimes using these services appeared, mostly by attempting intrusion or compromising networks. Logging network and application activities through collection and storing of network logs is
Publicado em: 2007
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31. Spatio-temporal dynamics of populations of the citrus leprosis pathossystem under natural epidemic conditions / Dinâmica espaço-temporal de populações do patossistema leprose dos citros em condições naturais de epidemia
Citrus leprosis, caused by Citrus leprosis virus (CiLV), is a disease endemic to the producing regions of the state of São Paulo, where it has a heavy impact on production. The virus is transmitted exclusively by the Brevipalpus phoenicis mite and disease control measures aim to reduce the vector population mainly by acaricide applications. Although the dis
Publicado em: 2007
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32. Growth and yield mensuration and modeling of non-thinned stands of eucalyptus clones / Mensuração e modelagem do crescimento e da produção de povoamentos não-desbastados de clones de eucalipto
The objective of this study was to develop procedures to quantify the volume of trees and stratify forests aiming to classify the productive capacity and growth and yield modeling of clonal plantings of non-thinned eucalyptus. To quantify tree volume data from 2.036 trees from commercial eucalyptus clones were used, owned by CAF Santa Bárbara Company, with
Publicado em: 2007
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33. Legal aspects regarding the buffer zone of protected areas: case study of Assis Ecological Station (São Paulo State, Brazil) / Análise dos aspectos jurídicos correlatos à zona de amortecimento de unidades de conservação: estudo de caso da Estação Ecológica de Assis (SP)
Buffer zones of the natural reserves have been considered as the most powerful instrument to prevent environmental impacts to the ecosystems coming from the neighboring areas. Their efficacy, however, is controvertible and that was the subject of the present case study, concerning to Assis Ecological Station, an integrally protected reserve from the Forestry
Publicado em: 2007
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34. Variabilidade de cinco espécies arbóreas da região de cerrado do Brasil Central para medidas de germinação e emergência / Variability of five arboreous species of the Central Brazil cerrado region for germination and emergency measurements
Basic studies of seed germination and seedling emergence assume an important role within scientific researches due to the devastation and fragmentation of the native vegetation of the Cerrado. Thus, in the present study the processes of seed germination and seedling emergency were evaluated using the linear correlations among the measurements calculated for
Publicado em: 2007
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35. Variability of five arboreous species of the Central Brazil cerrado region for germination and emergency measurements / Variabilidade de cinco espÃcies arbÃreas da regiÃo de cerrado do Brasil Central para medidas de germinaÃÃo e emergÃncia
Basic studies of seed germination and seedling emergence assume an important role within scientific researches due to the devastation and fragmentation of the native vegetation of the Cerrado. Thus, in the present study the processes of seed germination and seedling emergency were evaluated using the linear correlations among the measurements calculated for
Publicado em: 2007
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36. APLICABILIDADE DE MEMÓRIA LÓGICA COMO FERRAMENTA COADJUVANTE NO DIAGNÓSTICO DAS DOENÇAS GENÉTICAS
This study has involved the interaction among knowledge in very distinctive areas, or else: informatics, engineering e genetics, emphasizing the building of a taking decision backing system methodology. The aim of this study has been the development of a tool to help in the diagnosis of chromosomal aberrations, presenting like tutorial model the Turner Syndr
Publicado em: 2006