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Pedro Luiz Ramos

Profesor Asistente

Pontificia Universidad Católica de Chile

Santiago, Chile

Survival analysis, Bayesian inference, classical inference, and probability distribution theory

Estadistica, UNIVERSIDADE DE SAO PAULO. Brasil, 2018
Applied and Computational Mathematics, São Paulo State University. Brasil, 2015
Statistics, São Paulo State University. Brasil, 2011

Finalist of the 2019 ANP Technological Innovation Award, (joint work with other institutions)

Brazilian National Oil Agency.

Brasil, 2019

The ANP Award for Technological Innovation has the objective of recognizing and rewarding the results associated with research, development and innovation projects that represent technological innovation of interest to the oil, natural gas and biofuels sector, developed in Brazil by research institutions, credentialed by ANP Brazilian companies and oil companies, with total or partial use of resources of the present Clause in Exploration and Production contracts.
Best Poster Award on Statistics and Data Science

2nd Conference on Statistics and Data Science,

Chile, 2018

El artículo titulado "Nuevo gráfico de control de procesos estadísticos para datos de recuento sobredispersos basados ??en la distribución de Bell" recibió el Premio al Mejor Póster en Estadística y Ciencia de Datos en el II Congreso de Estadística y Ciencia de Datos, celebrado en Salvador - BA, entre el 18 y noviembre. 20.
2 o Place in the Best Doctoral Thesis Award from 2016-2018

Brazilian National Symposium on Probability and Statistic

Chile, 2018

La tesis doctoral "Inferencia bayesiana y clásica para la distribución gamma generalizada y modelos relacionados", defendida en febrero de 2018 en el Instituto de Matemáticas e Informática (ICMC) de la USP São Carlos, recibió el 2do lugar en el Premio a la Mejor Tesis de Doctorado en el Simposio Nacional de Probabilidad y Estadística (SINAPE).
NSF/QPRC Award

UNIVERSITY OF CONNECTICUT

Estados Unidos, 2017

NSF/QPRC Award, University of Connecticut, 2017.


Power laws distributions in objective priors Ramos, Pedro L.; Rodrigues, Francisco Aparecido; Ramos, E; Dey D.K.; Louzada F. Article STATISTICA SINICA (2023)
Objective Bayesian inference for the Capability index of the Weibull distribution and its generalization Ramos, Pedro L.; Almeida M.; Moala, Fernando A.; Flores E.; Louzada, Francisco Article COMPUTERS AND INDUSTRIAL ENGINEERING (2022)
Reliability assessment of repairable systems with series-parallel structure subjected to hierarchical competing risks under minimal repair regime Louzada, Francisco; Tomazella, Vera L. D.; Gonzatto, Oilson A.; Bochio, Gustavo; Milani, Eder A.; Ferreira, Paulo H.; Ramos, Pedro L. Article ISI RELIABILITY ENGINEERING & SYSTEM SAFETY (2022)
Reliability assessment of repairable systems with series–parallel structure subjected to hierarchical competing risks under minimal repair regime Louzada, Francisco; Gonzatto, Oilson A., Jr.; Tomazella V.; Milani E.; Ferreira, Paulo H.; Ramos, Pedro L.; Bochio, Gustavo Article RELIABILITY ENGINEERING AND SYSTEM SAFETY (2022)
Statistical process control of overdispersed count data based on one-parameter Poisson mixture models Jesus, Bruno D.; Ferreira, Paulo H.; Boaventura, Laion L.; Fiaccone, Rosemeire L.; Bertoli, Wesley; Ramos, Pedro L.; Louzada, Francisco Article ISI QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL (2022)
A Bayesian approach for the zero-inflated cure model: an application in a Brazilian invasive cervical cancer database de Souza, Hayala Cristina Cavenague; Louzada, Francisco; Ramos, Pedro Luiz; de Oliveira Junior, Mauro Ribeiro; Perdona, Gleici da Silva Castro Article ISI JOURNAL OF APPLIED STATISTICS (2021)
Bayesian analysis of the inverse generalized gamma distribution using objective priors Ramos, Pedro L.; Mota, Alex L.; Ferreira, Paulo H.; Ramos, Eduardo; Tomazella, Vera L. D.; Louzada, Francisco Article ISI JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION (2021)
Bayesian Reference Analysis for the Generalized Normal Linear Regression Model Tomazella, Vera Lucia Damasceno; Jesus, Sandra Rego; Gazon, Amanda Buosi; Louzada, Francisco; Nadarajah, Saralees; Nascimento, Diego Carvalho; Rodrigues, Francisco Aparecido; Ramos, Pedro Luiz Article ISI SYMMETRY-BASEL (2021)
Generalizing Normality: Different Estimation Methods for Skewed Information do Nascimento, Diego Carvalho; Ramos, Pedro Luiz; Elal-Olivero, David; Cortes-Araya, Milton; Louzada, Francisco Article ISI SYMMETRY-BASEL (2021)
Improved objective Bayesian estimator for a PLP model hierarchically represented subject to competing risks under minimal repair regime Louzada, Francisco; Cuminato, Jose A.; Rodriguez, Oscar M. H.; Tomazella, Vera L. D.; Ferreira, Paulo H.; Ramos, Pedro L.; Milani, Eder A.; Bochio, Gustavo; Perissini, Ivan C.; Gonzatto Junior, Oilson A.; Mota, Alex L.; Alegria, Luis F. A.; Colombo, Danilo; Perondi, Eduardo A.; Wentz, Andre V.; Junior, Anselmo L. Silva; Barone, Dante A. C.; Santos, Hugo F. L.; Magalhaes, Marcus V. C. Article ISI PLOS ONE (2021)
Inverse Gaussian process model with frailty term in reliability analysis Morita, Lia H. M.; Tomazella, Vera L.; Balakrishnan, Narayanaswamy; Ramos, Pedro L.; Ferreira, Paulo H.; Louzada, Francisco Article ISI QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL (2021)
Objective bayesian analysis for multiple repairable systems D'Andrea, Amanda M. E.; Tomazella, Vera L. D.; Aljohani, Hassan M.; Ramos, Pedro L.; Almeida, Marco P.; Louzada, Francisco; Verssani, Bruna A. W.; Gazon, Amanda B.; Afify, Ahmed Z. Article ISI PLOS ONE (2021)
Objective Bayesian inference for the capability index of the Gamma distribution de Almeida, Marcello Henrique; Ramos, Pedro Luiz; Rao, Gadde Srinivasa; Moala, Fernando Antonio Article ISI QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL (2021)
On Posterior Properties of the Two Parameter Gamma Family of Distributions Ramos, Pedro L.; Dey, Dipak K.; Louzada, Francisco; Ramos, Eduardo Article ISI ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS (2021)
Optimal burn-in policy based on a set of cutoff points using mixture inverse Gaussian degradation process and copulas Morita, Lia H. M.; Tomazella, Vera L.; Ferreira, Paulo H.; Ramos, Pedro L.; Balakrishnan, Narayanaswamy; Louzada, Francisco Article ISI APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY (2021)
Power laws in the Roman Empire: a survival analysis Ramos, P. L.; Costa, L. F.; Louzada, F.; Rodrigues, F. A. Article ISI ROYAL SOCIETY OPEN SCIENCE (2021)
The impacts of climate change on rainfall modeling in the Pantanal of Mato Grosso do Sul Pobocikova, Ivana; de Souza, Amaury; Abreu, Marcel Carvalho; De Oliveira-Junior, Jose Francisco; dos Santos, Cicero Manoel; Pinto Lins, Tayna Maria; Aristone, Flavio; Ramos, Pedro Luiz Article ISI ACTA SCIENTIARUM-TECHNOLOGY (2021)
The random deterioration rate model with measurement error based on the inverse Gaussian distribution Morita, Lia H. M.; Tomazella, Vera L. D.; Ramos, Pedro L.; Ferreira, Paulo H.; Louzada, Francisco Article ISI BRAZILIAN JOURNAL OF PROBABILITY AND STATISTICS (2021)
Una distribución de Lindley ponderada reparametrizada: propiedades, estimación y aplicaciones Mota, Alex L.; Ramos, Pedro L.; Ferreira, Paulo H.; Tomazella, Vera L. D.; Louzada, Francisco Article ISI Revista Colombiana de Estadística (2021)
Weighted Lindley frailty model: estimation and application to lung cancer data Mota, Alex; Milani, Eder A.; Calsavara, Vinicius F.; Tomazella, Vera L. D.; Leao, Jeremias; Ramos, Pedro L.; Ferreira, Paulo H.; Louzada, Francisco Article ISI LIFETIME DATA ANALYSIS (2021)
An extended poisson family of life distribution: a unified approach in competitive and complementary risks Ramos, Pedro L.; Dey, Dipak K.; Louzada, Francisco; Lachos, Victor H. Article ISI JOURNAL OF APPLIED STATISTICS (2020)
Bayesian non-parametric frailty model for dependent competing risks in a repairable systems framework Almeida, Marco Pollo; Paixao, Rafael S.; Ramos, Pedro L.; Tomazella, Vera; Louzada, Francisco; Ehlers, Ricardo S. Article ISI RELIABILITY ENGINEERING & SYSTEM SAFETY (2020)
Bias Reduction in the Closed-Form Maximum Likelihood Estimator for the Nakagami-m Fading Parameter Ramos, Pedro Luiz; Louzada, Francisco; Ramos, Eduardo Article ISI IEEE WIRELESS COMMUNICATIONS LETTERS (2020)
Contributed Discussion on 'On a Class of Objective Priors from Scoring Rules' Louzada F.; Ramos, E.; Ramos, P.L Article BAYESIAN ANALYSIS (2020)
Exponential-Poisson distribution: estimation and applications to rainfall and aircraft data with zero occurrence Louzada, Francisco; Ramos, Pedro; Ferreira, Paulo Article ISI COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION (2020)
Incorporation of Frailties Into a Non-Proportional Hazard Regression Model and Its Diagnostics for Reliability Modeling of Downhole Safety Valves Louzada, Francisco; Cuminato, Jose Alberto; Rodriguez, Oscar Mauricio Hernandez; Tomazella, Vera L. D.; Milani, Eder Angelo; Ferreira, Paulo Henrique; Ramos, Pedro Luiz; Bochio, Gustavo; Perissini, Ivan Carlos; Junior, Oilson Alberto Gonzatto; Mota, Alex Leal; Alegria, Luis Felipe Acuna; Colombo, Danilo; De Oliveira, Paulo Guilherme Oliveira; Santos, Hugo Francisco Lisboa; De Magalhaes, Marcus Vinicius De Campos Article ISI IEEE ACCESS (2020)
Objective Bayesian analysis for the Lomax distribution Ferreira, Paulo H.; Ramos, Eduardo; Ramos, Pedro L.; Gonzales, Jhon F. B.; Tomazella, Vera L. D.; Ehlers, Ricardo S.; Silva, Eveliny B.; Louzada, Francisco Article ISI STATISTICS & PROBABILITY LETTERS (2020)
Posterior properties of the Weibull distribution for censored data Ramos, Eduardo; Ramos, Pedro L.; Louzada, Francisco Article ISI STATISTICS & PROBABILITY LETTERS (2020)
Reference Bayesian analysis for the generalized lognormal distribution with application to survival data Tomazella, Vera L. D.; de Jesus, Sandra R.; Louzada, Francisco; Nadarajah, Saralees; Ramos, Pedro L. Article ISI STATISTICS AND ITS INTERFACE (2020)
The Lehmann type II inverse Weibull distribution in the presence of censored data Tomazella, Vera L. D.; Ramos, Pedro L.; Ferreira, Paulo H.; Mota, Alex L.; Louzada, Francisco Article ISI COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION (2020)
The polynomial-exponential distribution: a continuous probability model allowing for occurrence of zero values Chesneau, Christophe; Bakouch, Hassan S.; Ramos, Pedro L.; Louzada, Francisco Article ISI COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION (2020)
Um estudo de caso de engenharia de confiabilidade de colhedoras de cana-de-açúcar Nascimento, Diego Carvalho do; Ramos, Pedro Luiz; Ennes, André; Cocolo, Camila; Nicola, Márcio José; Alonso, Carlos; Ribeiro, Luiz Gustavo; Louzada, Francisco Article ISI Gestão Produção (2020)
A Distribution for Instantaneous Failures Ramos, P.L; Louzada F. Article Stats (2019)
A Note on Bias of Closed-Form Estimators for the Gamma Distribution Derived From Likelihood Equations Louzada, Francisco; Ramos, Pedro L.; Ramos, Eduardo Article ISI AMERICAN STATISTICIAN (2019)
A note on the exponential geometric power series distribution Ramos, Pedro Luiz; Louzada, Francisco Article ISI COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION (2019)
A Repairable System Subjected to Hierarchical Competing Risks: Modeling and Applications Louzada, Francisco; Cuminato, Jose A.; Rodriguez, Oscar M. H.; Tomazella, Vera L. D.; Ferreira, Paulo H.; Ramos, Pedro L.; Niaki, Seyed R. A.; Gonzatto, Oilson A., Jr.; Perissini, Ivan C.; Alegria, Luis F. A.; Colombo, Danilo; Martins, David E. A.; Santos, Hugo F. L. Article ISI IEEE ACCESS (2019)
Improved Bayes estimators and prediction for the Wilson-Hilferty distribution Ramos, Pedro L.; Almeida, Marco P.; Tomazella, Vera L. D.; Louzada, Francisco Article ISI ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS (2019)
Medical Care in Emergency Units with Risk Classification: Time to Attendance at a Hospital based on Parametric Models RAMOS, P. L.; NASCIMENTO, D. C.; Fernandes, R.; GUIMARÃES, E.; SANTANA, M.; SOARES, K.; LOUZADA, F. Article ISI TEMA (São Carlos) (2019)
Modeling traumatic brain injury lifetime data: Improved estimators for the Generalized Gamma distribution under small samples Ramos, Pedro L.; Nascimento, Diego C.; Ferreira, Paulo H.; Weber, Karina T.; Santos, Taiza E. G.; Louzada, Francisco Article ISI PLOS ONE (2019)
Risk Management in E-Commerce-A Fraud Study Case Using Acoustic Analysis through Its Complexity Nascimento, Diego C.; Barbosa, Bruno; Perez, Andre M.; Caires, Daniel O.; Hirama, Edgar; Ramos, Pedro L.; Louzada, Francisco Article ISI Entropy (2019)
Some new results for the transmuted generalized gamma distribution Saboor, Abdus; Khan, Muhammad Nauman; Cordeiro, Gauss M.; Pascoa, Marcelino A. R.; Ramos, Pedro L.; Kamal, Mustafa Article ISI JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS (2019)
The Frechet distribution: Estimation and application-An overview Ramos, Pedro L.; Louzada, Francisco; Ramos, Eduardo; Dey, Sanku Article ISI JOURNAL OF STATISTICS MANAGEMENT SYSTEMS (2019)
The inverse weighted Lindley distribution: Properties, estimation and an application on a failure time data Ramos, Pedro L.; Louzada, Francisco; Shimizu, Taciana K. O.; Luiz, Aline O. Article ISI COMMUNICATIONS IN STATISTICS-THEORY AND METHODS (2019)
Bayesian Reference Analysis for the Generalized Gamma Distribution Ramos, Pedro Luiz; Louzada, Francisco Article ISI IEEE COMMUNICATIONS LETTERS (2018)
Efficient closed-form maximum a posteriori estimators for the gamma distribution Louzada, Francisco; Ramos, Pedro Luiz Article ISI JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION (2018)
Poisson-exponential distribution: different methods of estimation Rodrigues, Giovani Carrara; Louzada, Francisco; Ramos, Pedro Luiz Article ISI JOURNAL OF APPLIED STATISTICS (2018)
Posterior Properties of the Nakagami-m Distribution Using Noninformative Priors and Applications in Reliability Ramos, Pedro Luiz; Louzada, Francisco; Ramos, Eduardo Article ISI IEEE TRANSACTIONS ON RELIABILITY (2018)
Reliability-Centered Maintenance: Analyzing Failure in Harvest Sugarcane Machine Using Some Generalizations of the Weibull Distribution Ramos, Pedro L.; Nascimento, Diego C.; Cocolo, Camila; Nicola, Marcio J.; Alonso, Carlos; Ribeiro, Luiz G.; Ennes, Andre; Louzada, Francisco Article ISI MODELLING AND SIMULATION IN ENGINEERING (2018)
The Inverse Nakagami-m Distribution: A Novel Approach in Reliability Louzada, Francisco; Ramos, Pedro Luiz; Nascimento, Diego Article ISI IEEE TRANSACTIONS ON RELIABILITY (2018)
Bayesian analysis of the generalized gamma distribution using non-informative priors Ramos, Pedro L.; Achcar, Jorge A.; Moala, Fernando A.; Ramos, Eduardo; Louzada, Francisco Article ISI STATISTICS (2017)
Binomial-exponential 2 Distribution: Different Estimation Methods with Weather Applications BAKOUCH, H.S.; DEY, S.; RAMOS, P.L.; LOUZADA, F. Article ISI TEMA (São Carlos) (2017)
Exponentiated Chen distribution: Properties and estimation Dey, Sanku; Kumar, Devendra; Ramos, Pedro L.; Louzada, Francisco Article ISI COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION (2017)
SOME COMPUTATIONAL ASPECTS TO FIND ACCURATE ESTIMATES FOR THE PARAMETERS OF THE GENERALIZED GAMMA DISTRIBUTION Achcar, Jorge A.; Ramos, Pedro L.; Martinez, Edson Z. Article ISI Pesquisa Operacional (2017)
An Efficient, Closed-Form MAP Estimator for Nakagami-m Fading Parameter Ramos, Pedro Luiz; Louzada, Francisco; Ramos, Eduardo Article ISI IEEE COMMUNICATIONS LETTERS (2016)
Different Estimation Procedures for the Parameters of the Extended Exponential Geometric Distribution for Medical Data Louzada, Francisco; Ramos, Pedro L.; Perdona, Gleici S. C. Article ISI COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE (2016)
The generalized weighted Lindley distribution: Properties, estimation, and applications Ramos, P. L.; Louzada, F. Article ISI COGENT MATHEMATICS (2016)

Pedro Ramos

Profesor Asistente

Estadística

Pontificia Universidad Católica de Chile

Santiago, Chile

Diego Carvalho

Formal Researcher

Universidad de Atacama

Copiapó, Chile

Pedro Luiz Ramos

Líneas de Investigación

Educación

Estadistica, UNIVERSIDADE DE SAO PAULO. Brasil, 2018

Applied and Computational Mathematics, São Paulo State University. Brasil, 2015

Statistics, São Paulo State University. Brasil, 2011

Premios y Distinciones

Finalist of the 2019 ANP Technological Innovation Award, (joint work with other institutions)

Best Poster Award on Statistics and Data Science

2 o Place in the Best Doctoral Thesis Award from 2016-2018

NSF/QPRC Award

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