Using caret to compare models

June 2, 2016
By
Using caret to compare models

by Joseph Rickert The model table on the caret package website lists more that 200 variations of predictive analytics models that are available withing the caret framework. All of these models may be prepared, tuned, fit and evaluated with a common set of caret functions. All on its own, the table is an impressive testament to the utility and...

Read more »

methylKit v0.9.6

June 2, 2016
By

We released a new version of methylKit, which is a package for DNA methylation analysis with bisulfite-seq data. This version comes with many changes summarized below. you can also have...

Read more »

Remote Pair Programming in R

June 2, 2016
By
Remote Pair Programming in R

Recently I’ve been doing a lot of remote pair programming with clients. A few people have asked how this works. Rather than try to explain it, I recorded one...

Read more »

Images as x-axis labels

June 2, 2016
By
Images as x-axis labels

Open-source software is awesome. If I found that a piece of closed-source software was missing a feature that I wanted, well, bad luck. I probably couldn't even tell if...

Read more »

R for Publication by Page Piccinini: Lesson 2 – Linear Regression

June 2, 2016
By
R for Publication by Page Piccinini: Lesson 2 – Linear Regression

This is our first lesson where we actually learn and use a new statistic in R. For today’s lesson we’ll be focusing on linear regression. I’ll be taking for...

Read more »

A demonstration of vtreat data preparation

June 1, 2016
By
A demonstration of vtreat data preparation

This article is a demonstration the use of the R vtreat variable preparation package followed by caret controlled training. In previous writings we have gone to great lengths to...

Read more »

Le Monde puzzle [#964]

June 1, 2016
By
Le Monde puzzle [#964]

A not so enticing Le Monde mathematical puzzle: Find the minimal value of a five digit number divided by the sum of its digits. This can formalised as finding...

Read more »

Reference semantics in R

June 1, 2016
By

Question I recently got a mail from Václav on reference semantics in data.tree, reading as follows: Dear Christoph, I am rather inexperienced when it comes to environments in R and...

Read more »

Covcalc: Shiny App for Calculating Coverage Depth or Read Counts for Sequencing Experiments

June 1, 2016
By
Covcalc: Shiny App for Calculating Coverage Depth or Read Counts for Sequencing Experiments

How many reads do I need? What's my sequencing depth? These are common questions I get all the time. Calculating how much sequence data you need to hit a...

Read more »

Trisurf Plots in R using Plotly

June 1, 2016
By

In this post we’ll show how to create Triangular Surface Plots in R. This post is based on timelyportfolio’s gist. Moebius Strip 2D Surface over a disk ...

Read more »

Scripting Loops In R

June 1, 2016
By
Scripting Loops In R

An R programmer can determine the order of processing of commands, via use of the control statements; repeat{}, while(), for(), break, and next Answers to the exercises are available...

Read more »

EARL London 2016 – Speakers Announced

June 1, 2016
By
EARL London 2016 – Speakers Announced

LONDON  13th – 15th SEPTEMBER 2016 EARL is an exciting cross-sector Conference dedicated to the real business usage of R.   One day of Workshops and two days devoted...

Read more »

MilanoR meeting | Call for presentations

June 1, 2016
By
MilanoR meeting | Call for presentations

A MilanoR meeting is an occasion to bring together R users from the Milano area to share R tips and experience: the next one will be Thursday, October 27th....

Read more »

NLP on NPR’s Commencement Addresses

June 1, 2016
By
NLP on NPR’s Commencement Addresses

Vocativ did an interesting analysis of the President’s State of the Union (SOTU) speeches. They showed that across the past couple hundred years and many Presidents, SOTU speeches...

Read more »

Recent presentations

June 1, 2016
By
Recent presentations

The last month or so has been a whirlwind of awesomeness with a veritable bevvy of user group and conference talks on my part! I thought I would share...

Read more »

Scientific RMarkdown

May 31, 2016
By

Recently, in my own little scientific community bubble there was increasing interest in markdown and its use for science. As a big fan of markdown and espacially rmarkdown, I created...

Read more »

heatmaply: interactive heat maps (with R)

May 31, 2016
By

I am pleased to announce heatmaply, my new R package for generating interactive heat maps, based on the plotly R package. tl;dr By running the following 3 lines of code:...

Read more »

Happy New Year, Mr. President. Data and Sentiment Analysis of Presidential New Year Speeches

May 31, 2016
By
Happy New Year, Mr. President. Data and Sentiment Analysis of Presidential New Year Speeches

Salvino A. Salvaggio At a moment where many are preparing for the December 31st evening...

Read more »

Principal Components Regression in R: Part 3

May 31, 2016
By
Principal Components Regression in R: Part 3

by John Mount Ph. D. Data Scientist at Win-Vector LLC In her series on principal components analysis for regression in R, Win-Vector LLC's Dr. Nina Zumel broke the demonstration...

Read more »

Predictive Bookmaker Consensus Model for the UEFA Euro 2016

May 31, 2016
By

(By Achim Zeileis) From 10 June to 10 July 2016 the best European football teams will meet in France to determine the European Champion in the UEFA European Championship...

Read more »

Understanding beta binomial regression (using baseball statistics)

May 31, 2016
By
Understanding beta binomial regression (using baseball statistics)

Previously in this series: Understanding the beta distribution Understanding empirical Bayes estimation Understanding credible intervals Understanding the Bayesian approach to false discovery rates ...

Read more »

QGIS, Open Source GIS & R

May 31, 2016
By
QGIS, Open Source GIS & R

Today’s post is by Kurt Menke, the owner of Bird’s Eye View GIS, a GIS consultancy. Kurt also wrote the book Mastering QGIS. In my latest course (Shapefiles for R...

Read more »

How to use data analysis for machine learning (example, part 1)

May 31, 2016
By
How to use data analysis for machine learning (example, part 1)

In my last article, I stated that for practitioners (as opposed to theorists), the real prerequisite for machine learning is data analysis, not math. One of the main reasons...

Read more »

Principal Components Regression, Pt. 3: Picking the Number of Components

May 30, 2016
By
Principal Components Regression, Pt. 3: Picking the Number of Components

In our previous note we demonstrated Y-Aware PCA and other y-aware approaches to dimensionality reduction in a predictive modeling context, specifically Principal Components Regression (PCR). For our examples, we...

Read more »

On ranger respect.unordered.factors

May 30, 2016
By
On ranger respect.unordered.factors

It is often said that “R it its packages.” One package of interest is ranger a fast parallel C++ implementation of random forest machine learning. Ranger is great package...

Read more »

zoo time series exercises

May 30, 2016
By
zoo time series exercises

The zoo package consists of the methods for totally ordered indexed observations. It aims at performing calculations containing irregular time series of numeric vectors, matrices & factors. The zoo...

Read more »

From a (set.)seed grows a mighty dataset

May 30, 2016
By

Can you predict the output from this code? Okay, the first bit is straightforward; it’s a function that puts two string together into one. The next two lines appear...

Read more »

satRday Event in Cape Town

May 30, 2016
By
satRday Event in Cape Town

This blog post was first published on EXEGETIC ANALYTICS‘s blog and kindly re-posted on Data Science Africa. We are planning to host one of the three inaugural satRday conferences in...

Read more »

Solving Math Puzzles with data.tree

May 29, 2016
By

I got a note from Karim Lahrichi, who even thinks about math when he’s supposed to be drinking beer. The bar puzzle they were trying to solve goes like this: Using...

Read more »

Sponsors

Mango solutions



RStudio homepage



Zero Inflated Models and Generalized Linear Mixed Models with R

Quantide: statistical consulting and training



http://www.eoda.de









ODSC

CRC R books series











Contact us if you wish to help support R-bloggers, and place your banner here.