Blog Archives

Benchmarking a SSD drive in reading and writing files with R

June 29, 2018
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Benchmarking a SSD drive in reading and writing files with R

- I recently bought a new computer for home and it came with two drives, one HDD and other SSD. The later is used for the OS and the former for all of my files. From all computers I had, both home and work, this is definitely the fastest. While some of...

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Second Edition of “Processamento e Analise de Dados Financeiros com o R”

June 12, 2018
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- It is with great pleasure that I announce the second edition of the portuguese version of my book, Processing and Analyzing Financial Data with R. This edition updates the material significantly. The portuguese version is now not only in par with the international version of the book, but...

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Investing for the Long Run

May 12, 2018
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Investing for the Long Run

- I often get asked about how to invest in the stock market. Not surprisingly, this has been a common topic in my classes. Brazil is experiencing a big change in its financial scenario. Historically, fixed income instruments paid a large premium over the stock market and that is no longer the case....

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Predatory Journals and R

April 22, 2018
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- My paper about the penetration of predatory journals in Brazil, Is predatory publishing a real threat? Evidence from a large database study, just got published in Scientometrics!. The working paper version is available in SSRN. This is a nice example of a data-intensive scientific work cycle, from gathering data...

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Writing papers about packages

March 16, 2018
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Some advices from a referee - Back in 2007 I wrote a Matlab package for estimating regime switching models. I was just starting to learn to code and this project was my way of doing it. After publishing it...

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Major update to BatchGetSymbols

January 22, 2018
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Making it even easier to download and organize stock prices from Yahoo Finance - I just released a long due update to package BatchGetSymbols. The files are under review in CRAN and you should get the update soon. Meanwhile, you c...

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The Brazilian post office and R

January 10, 2018
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The Brazilian post office and R

- While I would like to post a success story about the Brazilian post office using R to analyze its internal data, the real story is the use of R’s logo for its Registered mail :). Have...

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Looking back in 2017 and plans for 2018

December 30, 2017
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Looking back in 2017 and plans for 2018

- As we come close to the end of 2017, its time to look back. This has been a great year for me in many ways. This blog started as a way to write short pieces about using R...

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