ML models: What they can’t learn?

May 20, 2018
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ML models: What they can’t learn?

What I love in conferences are the people, that come after your talk and say: It would be cool to add XYZ to your package/method/theorem. After the eRum (great conference by the way) I was lucky to hear from Tal Galili: It would be cool to use DALEX for teaching, to show how different ML … Czytaj dalej ML...

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Rcpp 0.12.17: More small updates

Another bi-monthly update and the seventeenth release in the 0.12.* series of Rcpp landed on CRAN late on Friday following nine (!!) days in gestation in the incoming/...

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Statistics Sunday: Welcome to Sentiment Analysis with “Hotel California”

May 20, 2018
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Statistics Sunday: Welcome to Sentiment Analysis with “Hotel California”

Welcome to the Hotel CaliforniaAs promised in last week's post, this week: sentiment analysis, also with song lyrics.Sentiment analysis is a method of natural language processing that involves...

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R/exams @ eRum 2018

May 19, 2018
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R/exams @ eRum 2018

Keynote lecture about R/exams at eRum 2018 (European R Users Meeting) in Budapest: Slides, video, e-learning, replication materials. ...

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RcppGSL 0.3.5

A maintenance update of RcppGSL just brought version 0.3.5 to CRAN, a mere twelve days after the RcppGSL 0.3.4. release. Just like yesterday's upload of inline 0.3.15 it...

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openrouteservice – geodata!

May 19, 2018
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openrouteservice – geodata!

The openrouteservice provides a new method to get geodata into R. It has an API (or a set of them) and an R package has been written to communicate...

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Create Code Metrics with cloc

May 19, 2018
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Create Code Metrics with cloc

The cloc Perl script (yes, Perl!) by Al Danial (https://github.com/AlDanial/cloc) has been one of the go-to tools for generating code metrics. Given a single file, directory tree, archive, or...

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An East-West less divided?

May 19, 2018
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An East-West less divided?

With tensions heightened recently at the United Nations, one might wonder whether we’ve drawn closer, or farther apart, over the decades since the UN was established in 1945. We'll...

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Do Clustering by “Dimensional Collapse”

May 19, 2018
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Do Clustering by “Dimensional Collapse”

Problem Image that someone in a bank want to find out whether some of bank’s credit card holders are acctually the same person, so according to his experience, he...

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Decision Modelling in R Workshop in The Netherlands!

May 19, 2018
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The Decision Analysis in R for Technologies in Health (DARTH) workgroup is hosting a two-day workshop on decision analysis in R in Leiden, The Netherlands from June 7-8, 2018....

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wrapr 1.4.1 now up on CRAN

May 18, 2018
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wrapr 1.4.1 now up on CRAN

wrapr 1.4.1 is now available on CRAN. wrapr is a really neat R package both organizing, meta-programming, and debugging R code. This update generalizes the dot-pipe feature’s dot S3...

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inline 0.3.15

inline 0.3.15

A maintenance release of the inline package arrived on CRAN today. inline facilitates writing code in-line in simple string expressions or short files. The package is mature and...

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My eRum 2018 biggest highlights

May 18, 2018
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My eRum 2018 biggest highlights

On the range of dates 14.-16. May 2018, the European R users meeting (eRum) was held in Budapest. I was there as an active participant since I had the...

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What Makes a Song (More) Popular

May 18, 2018
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What Makes a Song (More) Popular

Earlier this week, the Association for Psychological Science sent out a press release about a study examining what makes a song popular:Researchers Jonah Berger of the University of Pennsylvania...

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How To Plot With Dygraphs: Exercises

May 18, 2018
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INTRODUCTION The dygraphs package is an R interface to the dygraphs JavaScript charting library. It provides rich facilities for charting time-series data in R, including: 1. Automatically plots xts...

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‘LMX ot NOSJ!’ Interchanging Classic Data Formats With Single `blackmagic` Incantations

May 18, 2018
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‘LMX ot NOSJ!’ Interchanging Classic Data Formats With Single `blackmagic` Incantations

The D.C. Universe magic hero Zatanna used spells (i.e. incantations) to battle foes and said spells were just sentences said backwards, hence the mixed up jumble in the title....

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R Improvements for Bio7 2.8

May 18, 2018
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R Improvements for Bio7 2.8

18.05.2018 The next release of Bio7 adds a lot of new R features and improvements. One minor change is that the default perspective after the startup of Bio7 now...

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Automated Feature Selection using bounceR

May 18, 2018
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Automated Feature Selection using bounceR

Automated Data Science From a very philosophical point of view, as humans evolve we tend to automate repetitive tasks in order to waste our time with more pleasant matters....

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NYC restaurants reviews and inspection scores

May 17, 2018
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NYC restaurants reviews and inspection scores

  If you ever pass outside a restaurant in New York City, you’ll notice a prominently displayed letter grade. Since July 2010, the Health Department has required restaurants to...

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drake’s improved high-performance computing power

drake’s improved high-performance computing power

The drake R package is not only a reproducible research solution, but also a serious high-performance computing engine. The Get Started page introduces drake, and this technical note draws...

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Understanding PCA using Stack Overflow data

May 17, 2018
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This year, I have given some talks about understanding principal component analysis using what I spend day in and day out with, Stack Overflow data. You can see a...

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Analyzing Customer Data from Square

Analyzing Customer Data from Square

The Square Data Model Authenticating Pulling Transaction Data Spend by Customer Group Issues with the APIsCannot Request Specific Fields Cannot Update Customer Groups Programmatically Customer ID Not On Transactions The Square Data Model Whether you own your...

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Beautiful and Powerful Correlation Tables in R

May 17, 2018
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Beautiful and Powerful Correlation Tables in R

Another correlation function?! A table A Plot A print Options Fun with p-hacking Credits Another correlation function?! Yes, the correlation function from the psycho package. devtools::install_github("neuropsychology/psycho.R")...

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Le Monde puzzle [#1051]

May 17, 2018
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Le Monde puzzle [#1051]

A combinatoric Le Monde mathematical puzzle of limited size: When the only allowed move is to switch two balls from adjacent boxes, what is the minimal number of moves...

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To purrr or not to purrr

May 17, 2018
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To purrr or not to purrr

...

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My book “Deep Learning from first principles” now on Amazon

May 17, 2018
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My book “Deep Learning from first principles” now on Amazon

My 4th book(self-published), “Deep Learning from first principles – In vectorized Python, R and Octave” (557 pages), is now available on Amazon in both paperback ($16.99) and kindle ($6.65/Rs449)....

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Tuning xgboost in R: Part I

May 16, 2018
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Tuning xgboost in R: Part I

By Gabriel Vasconcelos Before we begin, I would like to thank Anuj for kindly including our blog in his list of the top40 R blogs! Check out the full...

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Laser Beams and Elliptical Billiards: Euler Problem 144

May 16, 2018
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Laser Beams and Elliptical Billiards: Euler Problem 144

This article provides a solution in the R language for Euler Problem 144: How many times does a laser bounce inside an elliptical mirror before the light beam exits...

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General gems of comperes

May 16, 2018
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Examples of exported functions from comperes package that could be useful for general tasks. Prologue I am very glad to announce...

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