simulating correlated Binomials [another Bernoulli factory]

April 20, 2015
By
simulating correlated Binomials [another Bernoulli factory]

This early morning, just before going out for my daily run around The Parc, I checked X validated for new questions and came upon that one. Namely, how to simulate X a Bin(8,2/3) variate and Y a Bin(18,2/3) such that corr(X,Y)=0.5. (No reason or motivation provided for this constraint.) And I thought the following (presumably

Read more »

The JP Morgan SCTO strategy

April 20, 2015
By
The JP Morgan SCTO strategy

This strategy goes over JP Morgan’s SCTO strategy, a basic XL-sector/RWR rotation strategy with the typical associated risks and returns … Continue reading →

Read more »

AusDM 2015 submission deadline extended to Thursday 30 April

April 20, 2015
By
AusDM 2015 submission deadline extended to Thursday 30 April

The 13th Australasian Data Mining Conference (AusDM 2015) Sydney, Australia, 8–9 August 2015 (co-located with SIGKDD’15) URL: http://ausdm15.ausdm.org/ The Australasian Data Mining Conference has established itself as the premier...

Read more »

Seminar of IAPA Canberra Chapter: Big Data in the Social Sciences, Wednesday 29 April

April 20, 2015
By
Seminar of IAPA Canberra Chapter: Big Data in the Social Sciences, Wednesday 29 April

Date: Wednesday 29 April Time: 5.45pm for a 6pm start Cost: Nil Where: SAS Offices, 12 Moore Street, Canberra, ACT 2600 RSVP link: http://www.iapa.org.au/Event/ACTChapterEvent29AprilBigDataInSocialSciences Join us for our next...

Read more »

plot.xts RFC

April 20, 2015
By

We have been working on a new charting engine for xts::plot.xts for the past couple years. It started with Michael Weylandt's work during the 2012 Google Summer of Code,...

Read more »

My New Favorite Statistics & Data Analysis Book Using R

April 20, 2015
By
My New Favorite Statistics & Data Analysis Book Using R

(Note: The Amazon site may not be fully functional until mid-week as they complete their setup.) As of today, I now have a NEW FAVORITE introductory statistics textbook… the one...

Read more »

Financial Times tracks unemployment with R

April 20, 2015
By
Financial Times tracks unemployment with R

The FT Data section of the Financial Times now has a neat interactive unemployment tracker (free but onerous registration required) that lets you explore employment rates and trends in...

Read more »

NEWS of my BioC packages

April 20, 2015
By
NEWS of my BioC packages

GOSemSim GOSemSim was first implemented in 2008 and published in Bioinformatics in 2010. It's now a mature package with no bugs found in the past half year. Only vignette and...

Read more »

R 3.1 -> 3.2 upgrade notes

April 19, 2015
By
R 3.1 -> 3.2 upgrade notes

My machines upgraded from R version 3.1.3 to version 3.2.0 last week, which means that existing code suddenly cannot find packages and so fails. Some notes to myself, possibly...

Read more »

R vs QGIS for sustainable transport planning

April 19, 2015
By
R vs QGIS for sustainable transport planning

The 23rd iteration of the GIS Research UK conference (#GISRUK) conference was the largest ever. 250 researchers, industry representatives and academics attended from the vibrant geospatial research communities in the UK, Europe and...

Read more »

The first NYC R Conference is being held at Work-Bench April 24-25

April 19, 2015
By
The first NYC R Conference is being held at Work-Bench April 24-25

The first NYC R Conference is being held at Work-Bench April 24-25.  This is a place for R enthusiasts and data scientists to gather and explore, share and inspire ideas.  It is two...

Read more »

Age & Growth with R (Portland, Oregon)

April 19, 2015
By
Age & Growth with R (Portland, Oregon)

I (and Northland alum Taylor Stewart) will be leading a continuing education course on using R for typical age and growth analyses as part of the national American Fisheries Society conference...

Read more »

Boston Elite Field 2015

April 19, 2015
By
Boston Elite Field 2015

Last year I posted about how chances of a non-African country winning the Boston Marathon seemed to be good because of the widening interval of winning times (more recently...

Read more »

PK analysis: Theoph again

April 19, 2015
By
PK analysis: Theoph again

This week I wanted to repeat the Theoph PK analysis of two weeks ago in Stan. It also suddenly dawned on me. For a non-linear model in classical statistics...

Read more »

Bias in Observational Studies – Sensitivity Analysis with R package episensr

April 18, 2015
By
Bias in Observational Studies – Sensitivity Analysis with R package episensr

When it’s time to interpret the study results from your observational study, you have to estimate if the effect measure you obtained is the truth, if it’s due to...

Read more »

Analysing The Rock ‘n’ Roll Madrid Marathon

April 18, 2015
By
Analysing The Rock ‘n’ Roll Madrid Marathon

Nobody’s going to win all the time. On the highway of life you can’t always be in the fast lane (Haruki Murakami, What I Talk About When I Talk...

Read more »

How to convert an R data.tree to JSON

April 18, 2015
By

I have recently published the data.tree R package to CRAN. It provides OO-style tree building, with standard tree traversal methods. Read the vignette about data.tree features if you are...

Read more »

ID3 Classification using data.tree

April 17, 2015
By
ID3 Classification using data.tree

Introduction About this vignette What is ID3? Feature Selection Purity and Entropy Information Gain The ID3 algorithm Pseudo code Implementation in R with the data.tree package Training with data...

Read more »

Hash Table Performance in R: Part III In Part I of this series, I explained how R hashed…

April 17, 2015
By

Hash Table Performance in R: Part III In Part I of this series, I explained how R hashed environments are superior to vectors or lists when you’re in need of...

Read more »

The Non-parametric Bootstrap as a Bayesian Model

April 17, 2015
By
The Non-parametric Bootstrap as a Bayesian Model

The non-parametric bootstrap was my first love. I was lost in a muddy swamp of zs, ts and ps when I first saw her. Conceptually beautiful, simple to implement,...

Read more »

R 3.2.0 is released (+ using the installr package to upgrade in Windows OS)

April 17, 2015
By
R 3.2.0 is released (+ using the installr package to upgrade in Windows OS)

R 3.2.0 (codename “Full of Ingredients”) was released yesterday. You can get the latest binaries version from here. (or the .tar.gz source code from here). The full list of new features and bug fixes...

Read more »

It’s a Batsman’s World (Cup)

April 17, 2015
By
It’s a Batsman’s World (Cup)

The 2015 Cricket World Cup rewrote the record books in dramatic fashion. Amidst the usual insanity that surrounds this event, there were some amazingly good - and bad - performances. Batting-wise,...

Read more »

The Intersection of “Data Capital” and Advanced Analytics

April 17, 2015
By

We’ve heard about the Three Laws of Data Capital from Paul Sonderegger at Oracle: data comes from activity, data tends to make more data, and platforms tend to...

Read more »

R 3.2.0 released

April 17, 2015
By

The R Core Team announced yesterday that the latest update to R, R 3.2.0 (codename: "Full of Ingredients") is now available. As of this writing the source bundle is...

Read more »

R User Group Meetings this week in the Bay Area and around the world

April 16, 2015
By
R User Group Meetings this week in the Bay Area and around the world

by Joseph Rickert Tracking R user group meetings is a good way to stay informed about what's happening in the R world. On Tuesday the Bay Area useR Group...

Read more »

Now you can start every R tutorial for free @DataCamp

April 16, 2015
By
Now you can start every R tutorial for free @DataCamp

Want to learn more on topics such as R programming, dplyr, data.table, ggvis, and R Markdown? You can now start every DataCamp course for free, and discover how fun it...

Read more »

Statistics journals network

April 16, 2015
By
Statistics journals network

Xian blogged recently on the incoming RSS read paper: Statistical Modelling of Citation Exchange Between Statistics Journals, by Cristiano Varin, Manuela Cattelan and David Firth. Following the last JRSS B read paper by...

Read more »

Knitr with Bio7

April 16, 2015
By

16.04.2015 In Bio7 it is possible to write a documentation in knitr. A simple visual and textual HTML editor (based on JavaFX) and an embedded Latex editor (based on...

Read more »

Python and R: Basic Sampling Problem

April 16, 2015
By

In this post, I would like to share a simple problem about sampling analysis. And I will demonstrate how to solve this using Python and R. The first...

Read more »