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HOFs, closures, partial application and currying to solve the function environment problem in Scala

November 16, 2015
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HOFs, closures, partial application and currying to solve the function environment problem in Scala

Introduction Functional programming (FP) is a programming style that emphasises the use of referentially transparent pure functions and immutable data structures. Higher order functions (HOFs) tend to be used extensively to enable a clean functional programming style. A HOF is just a function that either takes a function as an argument or returns a function. … Continue reading HOFs, closures, partial application and currying to solve the function environment problem…

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Data frames and tables in Scala

August 21, 2015
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Data frames and tables in Scala

Introduction To statisticians and data scientists used to working in R, the concept of a data frame is one of the most natural and basic starting points for statistical computing and data analysis. It always surprises me that data frames aren’t a core concept in most programming languages’ standard libraries, since they are essentially a … Continue reading Data frames and tables in Scala

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Data frames and tables in Scala

August 21, 2015
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Data frames and tables in Scala

Introduction To statisticians and data scientists used to working in R, the concept of a data frame is one of the most natural and basic starting points for statistical computing and data analysis. It always surprises me that data frames aren’t a core concept in most programming languages’ standard libraries, since they are essentially a … Continue reading Data frames and tables in Scala

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Calling R from Scala sbt projects using rscala

August 15, 2015
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Calling R from Scala sbt projects using rscala

Overview In the previous post I showed how the rscala package (which has replaced the jvmr package) can be used to call Scala code from within R. In this post I will show how to call R from Scala code. I have previously described how to do this using jvmr. This post is really just … Continue reading Calling R from Scala sbt projects using rscala

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Calling R from Scala sbt projects using rscala

August 15, 2015
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Calling R from Scala sbt projects using rscala

Overview In the previous post I showed how the rscala package (which has replaced the jvmr package) can be used to call Scala code from within R. In this post I will show how to call R from Scala code. I have previously described how to do this using jvmr. This post is really just … Continue reading Calling R from Scala sbt projects using rscala

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Calling Scala code from R using rscala

August 15, 2015
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Calling Scala code from R using rscala

Introduction In a previous post I looked at how to call Scala code from R using a CRAN package called jvmr. This package now seems to have been replaced by a new package called rscala. Like the old package, it requires a pre-existing Java installation. Unlike the old package, however, it no longer depends on … Continue reading Calling Scala code from R using rscala

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Calling Scala code from R using rscala

August 15, 2015
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Calling Scala code from R using rscala

Introduction In a previous post I looked at how to call Scala code from R using a CRAN package called jvmr. This package now seems to have been replaced by a new package called rscala. Like the old package, it requires a pre-existing Java installation. Unlike the old package, however, it no longer depends on … Continue reading Calling Scala code from R using rscala

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Index to first 50 posts

April 10, 2015
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Index to first 50 posts

This is the 50th post to this blog. For my 25th post I provided a catalogue of my first 25 posts, and as promised then, I now provide a similar index for posts 25 to 50. 25. Catalogue of my first 25 blog posts 26. Multivariate data analysis (using R): a course and some lecture … Continue reading Index to first 50 posts

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Index to first 50 posts

April 10, 2015
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Index to first 50 posts

This is the 50th post to this blog. For my 25th post I provided a catalogue of my first 25 posts, and as promised then, I now provide a similar index for posts 25 to 50. 25. Catalogue of my first 25 blog posts 26. Multivariate data analysis (using R): a course and some lecture … Continue reading Index to first 50 posts

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Scala for Machine Learning [book review]

April 9, 2015
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Scala for Machine Learning [book review]

Nicolas, Patrick R. (2014) Scala for Machine Learning, Packt Publishing: Birmingham, UK. Full disclosure: I received a free electronic version of this book from the publisher for the purposes of review. There is clearly a market for a good book about using Scala for statistical computing, machine learning and data science. So when the publisher … Continue reading Scala for Machine Learning [book review]

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