Last week I had a post 'Deaths in the Netherlands by cause and age'. During creation of that post I made one plot which I had not shown. It shows something odd. There is a vertical striping. Hence mortality varies by year across age.To examine this phe... [Read more...]

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Batch Geo-coding in R [Read more...]

Just few hours before Greeks head to the polls to decide on the bailout agreement, and ultimately, whether the country will stay in the euro, there is no overwhelming advantage of either side. Actually, the margin became blurred over the last three days, with the "Yes" position rehearsing a last-minute ... [Read more...]

Greeks have been quite volatile on their opinion whether they should accept or not a proposal by the country's creditors for more austerity to keep aid flowing. The polls conducted over this week look like crazy, though that "belly" was likely provoked by the anxiety on what comes next after ... [Read more...]

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I have submitted a draft of the Introduction to Fisheries Analyses with R to the publisher.  It will now be submitted to a thorough editorial review in preparation for a late 2015 publication (fingers are crossed).  The draft, as a whole … Continue reading → [Read more...]

The genre shirt asks, "What kind of music do u listen 2?"Microgenres exist because markets are fragmenting and marketers need names to attract emerging customer segments with increasingly specific preferences. The cost of producing and delivery music n... [Read more...]

I stand in awe of the R wizards who post their latest and greatest Shiny feats on R-Bloggers. It’s taken me a while to find my way around Shiny, but at last I feel ready to fill in a few gaps for others who may be just starting out ... [Read more...]

I survived to the Conference Dinner and I took the last [...] [Read more...]

"Machine Learning with R Cookbook" by Chiu Yu-Wei is nothing more or less than it purports to be: a collection of 110 recipes for applying Data Analysis and Machine Learning techniques in R. I was asked by the publishers to review this book and found it to be an interesting and ... [Read more...]

I am nearly ready to submit a draft of the Introduction to Fisheries Analysis with R book to the publisher.  Relatedly, I am preparing the FSA package to be version 1.0.0 by the time the book is released.  As part … Continue reading → [Read more...]

“Assertion” is computer-science jargon for a run-time check on your code. In R , this typically means function argument checks (“did they pass a numeric vector rather than a character vector into your function?”), and data quality checks (“does the date-of-birth column contain values in the past?”). The four packages R ... [Read more...]

Welcome to the blog post! It’s been long time since I wrote last post. I was recently searching about big data with R and I found sparkR package. Few months back I heard about it and it was a separate project on github. Databricks is actively working on sparkR ... [Read more...]

The latest worldwide R user conference has just wrapped up in Aalborg, Denmark and useR! 2015 was the best yet. A hearty round of applause to the organizers for a smoothly run, informative and fun event. To the organizers of next year's event in the Stanford, California: the bar has been ... [Read more...]

As written by my colleague Nicola in the post of day 1, [...] [Read more...]

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Automatic Machine Learning Introduction Introduction "I want to develop a model that automatically learns over time", a really challenging objective. We'll develop in this post a procedure that loads data, build a model, make predictions and, if so... [Read more...]

Automatic Machine Learning Introduction "I want to develop a model that automatically learns over time", a really challenging objective. We'll develop in this post a procedure that loads data, build a model, make predictions and, if something chang... [Read more...]

In my previous post, An Attempt to Understand Boosting Algorithm(s), I was puzzled by the boosting convergence when I was using some spline functions (more specifically linear by parts and continuous regression functions). I was using __ library(splines) __ fit=lm(y~bs(x,degree=1,df=3),data=df) The problem ... [Read more...]