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Simulation for Data Science with R

You're reading from   Simulation for Data Science with R Effective Data-driven Decision Making

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Product type Paperback
Published in Jun 2016
Publisher Packt
ISBN-13 9781785881169
Length 398 pages
Edition 1st Edition
Languages
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Author (1):
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Matthias Templ Matthias Templ
Author Profile Icon Matthias Templ
Matthias Templ
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Table of Contents (13) Chapters Close

Preface 1. Introduction 2. R and High-Performance Computing FREE CHAPTER 3. The Discrepancy between Pencil-Driven Theory and Data-Driven Computational Solutions 4. Simulation of Random Numbers 5. Monte Carlo Methods for Optimization Problems 6. Probability Theory Shown by Simulation 7. Resampling Methods 8. Applications of Resampling Methods and Monte Carlo Tests 9. The EM Algorithm 10. Simulation with Complex Data 11. System Dynamics and Agent-Based Models Index

Summary


The simulations shown in this chapter are of two different kinds: model-based simulation and design-based simulation. Model-based simulations simulate data from a certain (super-population) model. We saw that model-based simulations are easy to set-up. The aim is to always know true parameters – here, from the model that simulates random distributions of interest. The estimation is applied to each of the simulated data and compared with the true parameter values.

Design-based simulation studies differ in that sense that the sampling design must be incorporated. This is why we firstly showed how to simulate a finite population from where samples can be drawn. Whenever data sets are sampled with simple random sampling, there is no need for design-based simulations.

We also showed the efficient use of package simFrame. The examples showed that the framework allows researchers to make use of a wide range of simulation designs with only a few lines of code. In order to switch from one simulation...

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