This week the owner of my favorite Mexican restaurant in Baltimore, Rosalyn Vera, got death and arson1 threats. I could have been a bystander, but I tapped into my network and asked for help and she has received it. It’s been great to see the power of the community ... [Read more...]

Nowadays, data streams occur in many real scenarios. For example, they are generated from sensors, web traffic, satellites, and other interesting use cases. We have to process them in a fast way and extract from them as much knowledge as we can. Data s... [Read more...]

Finding the right content in census data can be daunting. Just give you an idea how complex the census data are, there are 1127 tables and 25070 columns of table contents in the 2012-2017 ACS 5-year summary file alone. dataset number of tables number of columns 2010 decennial census summary file 1 333 8959 2012-2017 5-year ... [Read more...]

A tutorial to use your Zotero references with rmarkdown, easily add the references, automatically generate your bibliography, including the packages used in your document. It’s a good practice to cite the R packages you use in your analysis. However it can be cumbersome to maintain the list of your ... [Read more...]

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I really like running simulation models before sporting events because they can give you so much more depth of understanding compared to the ‘raw’ odds that you get from the media or bookmakers, etc.  Yes, a team might have a “30% chance of winning a tournament we might hear”.  But there ... [Read more...]

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This is Part III of my series of posts about how to setup you blog with RStudio and blogdown. The other parts are: - Part I: about to setup the blog using Hugo, RStudio and blogdown - Part II explains my workflow of creating new posts. - Part III (this ... [Read more...]

Workflow In Part I of this series of post we setup our new blog using blogdown and Hugo. Once the blog is configured, this is the typical workflow I follow to write new posts and update my blog online: Open your blog project with RStudio Load the blogdown library and ... [Read more...]

Last month I migrated my blog from Wordpress to Hugo and blogdown. Now I can post from RStudio using R/markdown, which allow me to create interactive posts including R code. It has been such a good experience that I decide to write down how to do it with three ... [Read more...]

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  Developing a post-commission profitable currency trading model using Pivot Billions and R. Needle, meet haystack. Searching for the right combination of features to make a consistent trading model can be quite difficult and takes many, many iterations. By incorporating Pivot Billions and R into my research process, I was able ... [Read more...]

A new version of dqrng has made it onto the CRAN servers after a brief hick-up. Thanks to the CRAN team in general and Uwe Ligges in particular for their relentless efforts. This versions adds a new RNG to be used together with the provided distribution functions: The 64 bit version ... [Read more...]

Demographics information is usually reported in relation to precise boundaries: administrative, electoral, statistical, etc. Comparing demographics information reported at different point in time is often problematic because boundaries keep changing. The recogeo package faciliates reconciling boundaries and their data by a spatial analysis of the boundaries of two different periods. ... [Read more...]