Monthly Archives: August 2014

VCI — The Value Charts Indicator

August 23, 2014
By
VCI — The Value Charts Indicator

So recently, I was made known of the Value Charts Indicator , which was supposed to be some form of … Continue reading →

Read more »

An adverse consequence of fitting "maximal" linear mixed models

August 23, 2014
By
An adverse consequence of fitting "maximal" linear mixed models

Distribution of intercept-slope correlation estimates with 37 subjects, 15 itemsDistribution of intercept-slope correlation estimates with 50 subjects, 30 itemsShould one always fit a full variance covariance matrix (a "maximal" model) when one analyze...

Read more »

More operators or more syntax?

August 22, 2014
By

The motivation of pipeline operator is to make code more readable. In many cases, it indeed better organizes code so that the logic is presented in human-readable fluent style. In other cases, however, such operators can make things worse. Recently, I had an interesting discussion on how to add side effect piping to pipeR functionality (in this issue), just like...

Read more »

More ESA 2014 Program Text-Mining: Topics as Communities

August 22, 2014
By
More ESA 2014 Program Text-Mining: Topics as Communities

In my first pass at text analysis of the ESA program, I looked at how the frequency of words used in the ESA program differed from last year to this year. There are much more sophisticated ways at looking at word use in text, though, and I began to dive into the text-mining literature to find other...

Read more »

Because it’s Friday: A 3-minute movie in 4095 bytes

August 22, 2014
By

This entire movie — images, music, everything — is generated from a Windows PC executable of just 4,095 bytes. That's not a typo: we're not talking bytes not megabytes or gigabytes here. Less than 4kb total creates this entire scene. For comparison, a medium-quality video file of this exact same scene in AVI format comes in at over 64Mb:...

Read more »

Entering the field as a data scientist with certification

August 22, 2014
By

By Neera Talbert, VP Services and Ben Wiley, R Programmer at Revolution Analytics By now, everyone should be familiar with the data scientist boom. Simply logging onto LinkedIn reveals a seemingly infinite number of people with words and phrases like “Data Scientist”, “Big Data Specialist”, and “Analytics” in their title. A few weeks ago, an article floated around the...

Read more »

Pro Grammar and Devel Hoper

August 22, 2014
By
Pro Grammar and Devel Hoper

I've been teasing about this post for some time now. My next blog post is "Pro Grammar and Devel Hoper". And this not just an empty pun. Stay tuned.— Romain François (@romain_francois) August 3, 2014 @stefanbache another teaser. https://t.co/i2ubfOyjIO iris ____ filter( Sepal.Length __ 7 ) iris |__ filter( Sepal.Length __ 7 )— Romain François (@romain_francois) August 5, 2014 So I'm going to...

Read more »

Running “Native” Data Wrangling Applications in the Browser – IPython Notebooks (and R?) in Chrome

August 22, 2014
By
Running “Native” Data Wrangling Applications in the Browser – IPython Notebooks (and R?) in Chrome

Using browser based data analysis toolkits such as pandas in IPython notebooks, or R in RStudio, means you need to have access to python or R and the corresponding application server either on your own computer, or running on a remote server that you have access to. When running occasional training sessions or workshops, this

Read more »

Dendrograms in R2D3

August 22, 2014
By

Hi, I’m Andrew and this is my first post for Coppelia! If you like the look of this feel free to visit my blog dinner with data (and see what happens when a data scientist hits the kitchen!) I was excited by James’s last post on the new package R2D3, and I thought I would

Read more »

stringdist 0.8: now with soundex

August 22, 2014
By

An update to the stringdist package was released earlier this month. Thanks to a contribution of Jan van der Laan the package now includes a method to compute soundex codes as defined here. Briefly, soundex encoding aims to translate words … Continue reading →

Read more »

Search R-bloggers

Sponsors

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)