Blog Archives

Mini R Quizzes

October 25, 2016
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Mini R Quizzes

Data Science is sometimes a stressful and responsible job… so we spontaneously organize mini R quizzes in our R team at the company! Chaining R packages One of my favourite fast 5-minutes long R game is chaining R packages. One person says the nam...

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Warsaw R-Ladies

October 21, 2016
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Warsaw R-Ladies

First Warsaw R-Ladies Workshops were held yesterday! Over 100 R-Ladies have registered for the event! In this post I present notes from this meeting and provide some pictures of the beauty part of R. You can also learn a bit about the gender gap in th...

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Rocker – explanation and motivation for Docker containers usage in applications development

October 3, 2016
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Rocker – explanation and motivation for Docker containers usage in applications development

What is R? I was asked at the end of my presentation on the 10th Cracow R Users Meetup that was held last Friday (30.09.2016). I felt strange but absolutely confirmed that R is the language of Data Science and is designed to performed the statistical ...

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Warsaw R Enthusiast Meetups Season Finale

September 27, 2016
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Warsaw R Enthusiast Meetups Season Finale

Warsaw R and Data Analytics Enthusiast group is an effort that aims at integrating users of the R language in Warsaw, Poland. Our group has over 970 members at its meetup page. In this post I provide a summary of our group, our last 2 meetups before t...

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Monitoring R Applications with RZabbix

September 14, 2016
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Monitoring R Applications with RZabbix

As R users we mostly perform analysis, produce reports and create interactive shiny applications. Those are rather one-time performances. Sometimes, however, the R developer enters the world of the real software development, where R applications shoul...

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What Every R Package Must (REALLY) Contain? An Example on the eRum2016 Package

September 7, 2016
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What Every R Package Must (REALLY) Contain? An Example on the eRum2016 Package

The R package development is a complex process of creating (mostly) a useful software, that will (probably) be used by other users. This means the provided tool should be resistant, immune, well tested and properly documented. Developers from many dif...

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Extending sparklyr to Compute Cost for K-means on YARN Cluster with Spark ML Library

August 24, 2016
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Extending sparklyr to Compute Cost for K-means on YARN Cluster with Spark ML Library

Machine and statistical learning wizards are becoming more eager to perform analysis with Spark ML library if this is only possible. It’s trendy, posh, spicy and gives the feeling of doing state of the art machine learning and being up to date with ...

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BioC 2016 Conference Overview and Few Ways of Downloading TCGA Data

July 21, 2016
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BioC 2016 Conference Overview and Few Ways of Downloading TCGA Data

Few weeks ago I have a great pleasure of attending BioC 2016: Where Software and Biology Connect Conference at Stanford, where I have learned a lot! It wouldn’t be possible without the scholarship that I received from Bioconductor (organizers), whic...

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LDAvis Show Case on R-Bloggers

June 21, 2016
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LDAvis Show Case on R-Bloggers

Text mining is a new challenge for machine wandering practitioners. The increased interest in the text mining is caused by an augmentation of internet users and by rapid growth of the internet data which is said that in 80% is a text data. Extracting information from articles, news, posts and comments have became a desirable skill but what is...

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Venn Diagram Comparison of Boruta, FSelectorRcpp and GLMnet Algorithms

June 18, 2016
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Venn Diagram Comparison of Boruta, FSelectorRcpp and GLMnet Algorithms

Feature selection is a process of extracting valuable features that have significant influence on dependent variable. This is still an active field of research and machine wandering. In this post I compare few feature selection algorithms: traditional GLM with regularization, computationally demanding Boruta and entropy based filter from FSelectorRcpp (free of Java/Weka) package. Check out the comparison on...

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