### OpenMX, again

With help from Michael Spiegel, the lead developer of OpenMX, I was able to get it compiled and installed on my 64-bit Ubuntu system. Now it runs beautifully.

[Read more...] With help from Michael Spiegel, the lead developer of OpenMX, I was able to get it compiled and installed on my 64-bit Ubuntu system. Now it runs beautifully.

[Read more...]Here is an OpenSSH software I personally found useful and working well under Windows 7 / Vista. It is copSSH.
Besides it is free and open source, it is still actively maintained. It works well with the UAC (user account control setting) of Windows... [Read more...]

It seems to be something I am looking for: an interface between R and C for Bayesian analysis.http://www.probability.ca/amcmc/

[Read more...]I’m looking at ways to provide access to R via a web application. First rule: see what’s available first, before you reinvent the wheel. It’s not pretty.
From the R Web Interfaces FAQ:
Software
Brief notes
Rweb
Page last updated 1999. Of the 3 example links on the page ... [Read more...]

Just got back from Tokyo a few hours ago: I had an opportunity to give my
'Introduction to High-Performance Computing with R' tutorial / lectures
(for which previous slides can be found here).
This was an all-day talk at the
Institute for Statistical Mathematics
at their new site in Tachikawa in ... [Read more...]

When designing an experiment it is not always possible to generate a regular, balanced design such as a full or fractional factorial design plan. There are usually restrictions of the total number of experiments that can be undertaken or constraints on the factor settings both individually or in combination with ... [Read more...]

…in R of course!
There is a handy function to do those calculations. Normally (ahh!) you might resolve to a symbolic calculation package (Maple,Mathematica etc.) but that is not the situation any more. The calculations are done with the mnormt package. Relevant functions exist in other packages as well (... [Read more...]

This package bridges ADMB and R. It was once Windows-only and now has matured and become platform-independent. I will check it out and comment more about it.http://code.google.com/p/pbs-admb/And here is yet another R to ADMB interface: http://r-forge.r...

[Read more...] Simple linear regression uses a solitary independent variable to predict the outcome of a dependent variable. By understanding this, the most basic form of regression, numerous complex modeling techniques can be learned. This tutorial will explore how ...

[Read more...]Update – Check out the new RJava Eclipse Plugin.R is a powerful language for statistical computing and graphics. R has a strong community support and is finding new use in the corporate world. If R can be integrated with Java, it would provide a greap acceptance into new products. A ... [Read more...]

One of the search terms that bring people frequently to my site is “install ESS on Mac OS X” or something like that. As it turns out installing ESS on OS X is really easy, but Google search does not really bring up good instructions. There are at least two ... [Read more...]

This post, as with the prior ones on trade clusters, aims to help visualize patterns of trade in the OECD from 50 years of partner trade statistics. The data is rich, meaning we should be able to develop rich intuition by exploring it visually. These slides follow the method laid out ... [Read more...]

So for the rest of this conversation big data == 2 Gigs. Done. Don’t give me any of this ‘that’s not big, THIS is big’ shit. There now, on with the cool stuff:
This week on twitter Vince Buffalo asked about loading a 2 gig comma separated file (csv) into R (... [Read more...]

The New York Times had an interesting piece yesterday about how SAS is facing several business threats from companies like the recently IBM-acquired SPSS, and from burgeoning interest in open-source software like R. The NYT ran an entire article about R earlier this year, and this article discusses how SAS ... [Read more...]

Quantlib is a free library for modeling, trading, and risk management in real-life providing a comprehensive software framework for quantitative finance, it is written in C++, which might be inconvenient for some users. JQuantLib aiming at Java-fans i... [Read more...]

This post discusses a few strategies that I have used to to manage memory in R.Stack Overflow TipsStack Overflow has a thread on Memory Management Tricks. I tend to follow these suggestions:.ls.objects(): There's a nice function (.ls.objects...

[Read more...]
In hypothesis testing, a type II error is due to a failure of rejecting
an invalid null hypothesis. The probability of avoiding a type II error is
called the power of the hypothesis test, and is denoted by the quantity
1 - β .
read more
[Read more...]

Jeroen Ooms writes: Here's a first version of a new web application for exploratory graphical analysis. It attempts to implement the layered graphics from the R package ggplot2 in a user-friendly way. This two-minute demo video demonstrates a ... [Read more...]

I finally pushed highlight to CRAN, which should be available in a few days. The package uses the information gathered by the parser package to perform syntax highlighting of R code
The main function of the package is highlight, which takes a numb... [Read more...]

This article is quick concrete example of how to use the techniques from Survive R to lower the steepness of The R Project for Statistical Computing‘s learning curve (so an apology to all readers who are not interested in R). What follows is for people who already use R ... [Read more...]

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