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Master's Dissertation
DOI
https://doi.org/10.11606/D.45.2017.tde-18052017-001105
Document
Author
Full name
Henrique Bolfarine
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Iambartsev, Anatoli (President)
Fujita, André
Pechersky, Eugene Abramovich
Title in English
Comparative evaluation of network reconstruction methods in high dimensional settings
Keywords in English
Gaussian Graphical Model
GGMridge
GLasso
Graphical model
LPC
Network Reconstruction
Partial correlation
Abstract in English
In the past years, several network reconstruction methods modeled as Gaussian Graphical Model in high dimensional settings where proposed. In this work we will analyze three different methods, the Graphical Lasso (GLasso), Graphical Ridge (GGMridge) and a novel method called LPC, or Local Partial Correlation. The evaluation will be performed in high dimensional data generated from different simulated random graph structures (Erdos-Renyi, Barabasi-Albert, Watts-Strogatz ), using Receiver Operating Characteristic or ROC curve. We will also apply the methods in the reconstruction of genetic co-expression network for the differentially expressed genes in cervical cancer tumors.
Title in Portuguese
Comparação de métodos de reconstrução de redes em alta dimensão
Keywords in Portuguese
Correlação parcial
GGMridge
GLasso
LPC
Modelos gráficos
Modelos Gráficos Gaussianos
Reconstrução de redes
Abstract in Portuguese
Vários métodos tem sido propostos para a reconstrução de redes em alta dimensão, que e tratada como um Modelo Gráfico Gaussiano. Neste trabalho vamos analisar três métodos diferentes, o método Graphical Lasso (GLasso), Graphical Ridge (GGMridge) e um novo método chamado LPC, ou Correlação Parcial Local. A avaliação será realizada em dados de alta dimensão, gerados a partir de grafos aleatórios (Erdos-Renyi, Barabasi-Albert, Watts-Strogatz ), usando Receptor de Operação Característica, ou curva ROC. Aplicaremos também os metidos apresentados, na reconstrução da rede de co-expressão gênica para tumores de câncer cervical.
 
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Publishing Date
2017-05-29
 
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