Posts

Simulation Metamodeling - building and using surrogate models that can approximate results from more complicated simulation models - is an interesting approach to analyze results from complicated, computationally expensive simulation models. Metamodels are useful because they can yield good approximations of the original simulation model response variables using less computational resources. For an introduction to Metamodeling, refer to (Barton 2015). To my knowledge, no Discrete-Event Simulation (DES) software provides metamodeling capabilities, and guidance on how to actually execute metamodeling is scarce.

CONTINUE READING

This is part 1 of a series of posts in which I will explore the utility of using metamodels to make sense of (and possibly optimizing) simulation models. If you used simulation modeling on a real project, you might be familiar with this fictional story: You spent long hours building and refining your simulation model (eg.: a Discrete Event Model). Hopefully, you are confident that it can yield reliable results.

CONTINUE READING

This post contains materials related to the the presentation given at the 2018 DMDU Annual Meeting.

Full Master’s Thesis: Donwload Here.

Slides: Donwload Here.

Poster: Donwload Here.

CONTINUE READING

Este arquivo foi utilizado como arquivo de apoio à aulas ministradas sobre previsão de demanda utilizando o R. Para um tramento mais aprofundado sobre o tema, recorrer ao excelente livro Forecating: Principles and Practice. Este post possui uma apresentação relacionada neste link. Sobre o R O R é um ambiente de computação estatística, com mais de 13 mil pacotes publicados. Cada um destes pacotes tem um fim específico. Neste curso, utilizaremos principalmente as bibliotecas ‘forecast’ e o fpp2.

CONTINUE READING

Arena Simulation is a well-known Discrete Event Simulation Software. However, if you are a power user you might want to extend your analysis beyond what Arena’s Process Analyzer offers. In this tutorial, I’ll guide you through the main functions of Arena2R package. If you’re not an R user, fear not! Arena2R comes with an app you can use to explore your Arena Simulation data. All you’ll have to do is to Install R and R Studio, and run two commands in your R console.

CONTINUE READING

Este post corresponde aos slides do Mini-Curso “Introdução ao R - Aprendendo com o Moneyball”, realizado em 2017 no SIGEPRO. Cada um dos títulos neste post correspondia a um slide. O que Veremos neste Mini-Curso? O que é Data Analytics? Exemplo Moneyball. Como continuar aprendendo. Porque usar o R ? Open Source e Gratuito; Mais de 10 k bibliotecas gratuitas; Suporta muitos tipos de Análises; Conhecimento “cumulativo” e transferível a outros contextos.

CONTINUE READING