my 1st post for the Guardian Australia

May 30, 2013
By
my 1st post for the Guardian Australia

I’ll be contributing a piece about once a week for the Guardian Australia, under a part of the web site we’re calling The Swing. The set of graphs from my 1st effort were rendered in-line and rather low-res. Bigger, full res versions appear below; click on the in-line versions. It would be great to find

Read more »

Uncovering the Unreliable Friend Distribution

May 30, 2013
By
Uncovering the Unreliable Friend Distribution

Head down to your local hardware store and pick up a smoke detector. Pop off the cover and look inside. You’ll see a label that mentions Americium 241, a radioactive isotope. Put on your HEV suit, grab a pair of tweezers and a fine-tipped pen, and remove the 0.3 millionths of a gram of Americium.

Read more »

Scenario analysis for option strategies.

May 30, 2013
By
Scenario analysis for option strategies.

Introduction to the project I am working on at the moment. It is more a playground for option strategies than "project" at this stage. The idea is to develop accurate scenario analysis on portfolio, which is based on a single underlying. In the past I ...

Read more »

If…then in Japan

May 30, 2013
By
If…then in Japan

If Japan starts to spiral out of control, then what do they do? A spiral would be a sudden move higher in JGB rates with a simultaneous crash in the Japanese Yen. Their response would be to try to slow the positive feedback loop through external interv...

Read more »

Ryan Sheftel: "R on the Trading Desk"

May 30, 2013
By

by Joseph Rickert In a post last week, I offered some first impressions about R/Finance 2013. Apparently, I was way off in estimating that 30% of the attendees were academics. The R/Finance organizers were quick to point out that percentage of academics attending the conference has been a constant 10% over the years; and this year was no different....

Read more »

Are the Current Criteria for Empirically Supported Treatments Too Lenient?

May 30, 2013
By
Are the Current Criteria for Empirically Supported Treatments Too Lenient?

The practice of classifying treatments as empirically supported (ESTs) has been widely debated for a long time. Recently Jessica Nasser published an article in the Journal of Contemporary Psychotherapy named “Empirically Supported Treatments and Efficacy Trials: What Steps Do We Still Need to Take?”. In the article the author raises several concerns and suggestions regarding the current use of...

Read more »

Couch, apis and all that

May 30, 2013
By

It is getting easier to get data directly into R from the web. Often R packages that retrieve data from the web return useful R data structures like a data.frame or plot. This is a good thing of course to make things user friendly. However, what if you want to drill down into the data that's returned from a query...

Read more »

Are Fox News Polls Biased?

May 29, 2013
By
Are Fox News Polls Biased?

Especially after the outcome of the mid-term election, I think there is a common contention among some groups that there is something wonky about Fox News when it comes to reporting polls relative to President Obama and the Democratic Party in general....

Read more »

Parallel Processing: When does it worth?

May 29, 2013
By
Parallel Processing: When does it worth?

Most computers nowadays have few cores that incredibly help us with our daily computing duties. However, when statistical softwares do use parallelization for analyzing data faster? R, my preferred analytical package, does not take too much advantage of multicore processing by default. In fact, R has been inherently a “single-processor” package until nowadays. Stata, another

Read more »

Two forthcoming R books

May 29, 2013
By
Two forthcoming R books

Today I learned about two forthcoming R books that I'm now looking forward to. The first is Applied Predictive Modeling by Max Kuhn and Kjell Johnson. Max Kuhn is the author of the caret package, an extremely useful and powerful R package for fitting and optimizing all kinds of predictive models in R. It's available now on Amazon Kindle...

Read more »

Shiny talk by Joe Cheng

May 29, 2013
By
Shiny talk by Joe Cheng

Shiny is a framework work for creating web applications with R. Joe Cheng of RStudio, Inc. presented on Shiny last evening in Zillow's offices 30 stories up in the former WaMu Center. Luckily, the talk was interesting enough to compete with the view ...

Read more »

Look Familiar? Mapping in R

May 29, 2013
By
Look Familiar? Mapping in R

For those who have been following the R-Bloggers this picture should be yesterdays news, but there was an article on the BBC on it, full story HERE. I find it interesting how it was on Drudge Report (www.drudgereport.com) which gets over 1 million hits...

Read more »

Futile.logger 1.3.3 RC available

May 29, 2013
By
Futile.logger 1.3.3 RC available

This is a preview release of futile.logger 1.3.3 so some people with feature requests can try out the code before …Continue reading »

Read more »

Convert IP addresses to geolocation, latitude and longitude etc etc

May 29, 2013
By
Convert IP addresses to geolocation, latitude and longitude etc etc

Whoa! Now this is cool. It turns out there is a database at freegeoip.net which you can query for the location of a particular IP address. And as it has a neat little API for batches of IPs, you can … Continue reading →

Read more »

Data sonification with R: the sound of Twitter data

May 29, 2013
By
Data sonification with R: the sound of Twitter data

What does a tweet sound like? Not the kind that flies around in the air, but the kind that zips to and from our mobile devices. I’m intensely interested in finding ways to make sense of data. Sonification of data – representing data with sound – offers one way to do that. This post steps

Read more »

SAS Dominates Analytics Job Market; R up 42%

May 29, 2013
By
SAS Dominates Analytics Job Market; R up 42%

I’m continuing to gather and analyze data to update The Popularity of Data Analysis Software. In this installment I cover the latest employment figures. Employment is important to us all, so what software skills are employers seeking? A thorough answer … Continue reading →

Read more »

Analysis of Cable Morning Trade Strategy

May 29, 2013
By
Analysis of Cable Morning Trade Strategy

A couple of years ago I implemented an automated trading algorithm for a strategy called the “Cable Morning Trade”. The basis of the strategy is the range of GBPUSD during the interval 05:00 to 09:00 London time. Two buy stop orders are placed 5 points above the highest high for this period; two sell stop

Read more »

Stepping up to Big Data with R and Python: A Mind Map of All the Packages You Will Ever Need

May 29, 2013
By
Stepping up to Big Data with R and Python: A Mind Map of All the Packages You Will Ever Need

On May 8, we kicked off the transformation of R Users DC to Statistical Programming DC   (SPDC) with a meetup at iStrategyLabs in Dupont Circle. The meetup, titled “Stepping up to big data with R and Python,” was an … Continue reading →The post Stepping up to Big Data with R and Python: A Mind Map...

Read more »

Stepping up to Big Data with R and Python: A Mind Map of All the Packages You Will Ever Need

May 29, 2013
By
Stepping up to Big Data with R and Python: A Mind Map of All the Packages You Will Ever Need

On May 8, we kicked off the transformation of R Users DC to Statistical Programming DC   (SPDC) with a meetup at iStrategyLabs in Dupont Circle. The meetup, titled "Stepping up to big data with R and Python," was an experiment in collective learning as Marck and I guided a lively discussion...

Read more »

Item Analysis App – Shiny Code

May 28, 2013
By
Item Analysis App – Shiny Code

Here is the code for my first Shiny App! It is the one that I posted previously with a few slight revisions. You can see it at:A Shiny R AppIn order to make any sense of this I suggest you working through the tutorial (http://www.rstudio.com/shiny/) it...

Read more »

Will Mu Go Out With Median

May 28, 2013
By
Will Mu Go Out With Median

True story (no really, this did actually happen).  While in grad school one of the other teaching assistants was approached by one of the students and was asked “will mu go out with median?”  The teaching assistant thought the play on words was pretty funny, laughed, and then cluelessly walked away.  All of us other grad students

Read more »

Parallel Processing: When does it worth?

May 28, 2013
By
Parallel Processing: When does it worth?

Parallel computing is incredibly useful, but not every thing worths distribute across as many cores as possible. Most computers nowadays have few cores that incredibly help us with our daily computing duties. However, when statistical softwares do use parallelization for analyzing data faster? R, my preferred analytical package, does not take too much advantage of multicore processing...

Read more »

Parallel Processing: When does it worth?

May 28, 2013
By
Parallel Processing: When does it worth?

Most computers nowadays have few cores that incredibly help us with our daily computing duties. However, when statistical softwares do use parallelization for analyzing data faster? R, my preferred analytical package, does not take too much advantage of multicore processing by default. In fact, R has been inherently a “single-processor” package until nowadays. Stata, another decent...

Read more »

Companies using Open Source R in 2013

May 28, 2013
By

A recent quora post asked an interesting question: What interesting companies, open source projects are using R in 2013? Since we've been tracking applications of R here on the blog for a while now, I listed just some of the most recent examples: The New York Times routinely uses R for interactive and print data visualization. Google has more...

Read more »

Why doesn’t R have a MaxDiff package?

May 28, 2013
By

Almost once every year someone asks if R has a package for running the MaxDiff procedure sold by Sawtooth.  One such inquiry recently received a reply with a link showing in some detail the R code needed to generate a balanced incomplete...

Read more »

Intended or Unintended Consequences

May 28, 2013
By
Intended or Unintended Consequences

(This article was first published on Timely Portfolio, and kindly contributed to R-bloggers) A quick glimpse at the US 10y Treasury Bond rate since 2000 seems benign with low volatility and a general downward trend. require(latticeExtra)require(quantmod)US10y <- getSymbols("^TNX", from = "2000-01-01", auto.assign = FALSE)asTheEconomist(xyplot(US10y, scales = list(y = list(rot = 1)), main = "US 10y Yield Since 2000"))...

Read more »

Using R to communicate via a socket connection

May 28, 2013
By

Occasionally, the need arises to communicate with R via another process. There are packages available to facilitate this communication, but for simple problems, a socket connection may be the answer. Nearly all software languages have a socket communic...

Read more »

Converting Existing R Scripts to ORE – Getting Started

May 28, 2013
By
Converting Existing R Scripts to ORE – Getting Started

Normal 0 false false false EN-US X-NONE X-NONE ...

Read more »

R/Finance 2013 Review

May 28, 2013
By

It's been one week since the 5th Annual R/Finance conference, and I finally feel sufficiently recovered enough to share my thoughts. The conference is a two-day whirlwind of applied quantitative finance, fantastic networking, and general geekery.The comments below are based on my personal experience.  If I don't comment on a seminar or presentation, it doesn't mean I...

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

ODSC

CRC R books series





Six Sigma Online Training





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