Monthly Archives: July 2013

Facts and fallacies of the AIC

July 3, 2013
By

Akaike’s Information Criterion (AIC) is a very useful model selection tool, but it is not as well understood as it should be. I frequently read papers, or hear talks, which demonstrate misunderstandings or misuse of this important tool. The following points should clarify some aspects of the AIC, and hopefully reduce its misuse. The AIC is a penalized likelihood,...

Read more »

Plan B

July 3, 2013
By
Plan B

Thank goodness, I think that even if this statistician business turns out badly, I can still make a living with rafting (if only by begging for money, in exchange for looking ridiculous in the swim suit)... As part as my brother's stag do, we went...

Read more »

Fun with random effects in loss reserving

July 3, 2013
By
Fun with random effects in loss reserving

For some time now, I’ve advocated for the view that non-life loss reserving constitutes a categorized linear regression. I’ll emphasize that the idea of a linear regression isn’t remotely novel. Further, the categorization is the de facto approach. I’m merely recognizing it and suggesting instances where a decision may be made about the optimality of

Read more »

The R journal – Volume 5/1, June 2013

July 3, 2013
By
r_project

The new R Journal is out! Click for a complete table of content with links to all papers.

Read more »

The hat trick

July 3, 2013
By
The hat trick

In his book Quantum Computing Since Democritus, Scott Aaronson poses the following question: Suppose that you’re at a party where every guest is given a hat as they walk in. Each hat has either a pineapple or a watermelon on top, picked at random with equal probability. The guests don’t get to see the fruit

Read more »

In case you missed it: June 2013 Roundup

July 3, 2013
By

In case you missed them, here are some articles from June of particular interest to R users: You can create a Word document from a template and an R script with the R2DOCX package. Joe Rickert reviews books and other resources for learning about time series analysis in R. Timely Portfolio covers 15 years of history of time series...

Read more »

Summer Reading

July 3, 2013
By
Summer Reading

Get your fresh copy of the R-Journal from here.

Read more »

Predictive analysis on Web Analytics tool data

July 3, 2013
By
Predictive analysis on Web Analytics tool data

In our previous webinar, we discussed on predictive analytics and basic things to perform predictive analysis. We also discussed on an eCommerce problem and how it can be solved using predictive analysis. In this post, I will explain R script that I used to perform predictive analysis during webinar. Before I explain about R script,

Read more »

Fixing R’s NAMED problems in pqR

July 2, 2013
By
Fixing R’s NAMED problems in pqR

In R, objects of most types are supposed to be treated as “values”, that do not change when other objects change. For instance, after doing the following: a <- c(1,2,3) b <- a a <- 0 b is supposed to have the value 2, not 0. Similarly, a vector passed as an argument to a

Read more »

Which airline should you be loyal to?

July 2, 2013
By
Which airline should you be loyal to?

LOYALTY PROGRAM CHOICE BASED ON DEPARTURE COUNT If you read Decision Science News, you’re probably a professor or grad student or researcher or policy type who flies around a lot to conferences, symposia, workshops, tutorials, summer schools, and all-hands meetings. You travel the globe to give talks and work with co-authors. All this flying around The post Which...

Read more »

Sponsors

Mango solutions



RStudio homepage



Zero Inflated Models and Generalized Linear Mixed Models with R

Quantide: statistical consulting and training

datasociety

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.

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)