2042 search results for "Regression"

ASDAR book Review

September 8, 2014
By
ASDAR book Review

I was recently invited to write a book review for Applied Spatial Analysis and Policy (ASAP). The book, I conclude, “is the authoritative resource on R’s spatial capabilities” and should be of interest to many R users. Below is a preprint of the full review, now published on ASAP’s website. As a geographer and heavy R user,...

Read more »

Spatial Clustering: Conley Standard Errors for R

September 8, 2014
By

I have been working quite a lot with climate and weather data, to study the impact of rainfall shocks on violence in India and how this relationship changed, after the social insurance scheme NREGA was introduced. In my context, it becomes particularly relevant to adjust for spatial correlation if you find yourself in a situation

Read more »

Build a SPAM filter with R

September 8, 2014
By
Build a SPAM filter with R

You can find the complete code on github: https://github.com/JulianHill/R-Tutorials/blob/master/spam_class_r.r   Introduction: The topic Machine Learning gets more and more important. The number of data sources grows everyday and it makes it hard to get... The post Build a SPAM filter with R appeared first on ThinkToStart.

Read more »

An exercise in non-linear modeling

September 7, 2014
By
An exercise in non-linear modeling

In my previous post I wrote about the importance of age and why it is a good idea to try avoiding modeling it as a linear variable. In this post I will go through multiple options for (1) modeling non-linear effects in a linear regression setting, (2) benchmark the methods on a real dataset, and (3) look at how...

Read more »

1.2 Millions Deaths by Ebola projected within Six Months?

September 5, 2014
By
1.2 Millions Deaths by Ebola projected within Six Months?

The World Health Organization, Samaratins Purse, Doctors Without Borders, and other international medical emergency relief programs are desperately calling for additional resources in the international fight against Ebola that has already killed thousa...

Read more »

EM Algorithm for Bayesian Lasso R Cpp Code

September 5, 2014
By
EM Algorithm for Bayesian Lasso R Cpp Code

Bayesian Lasso $$begin{align*} p(Y_{o}|beta,phi)&=N(Y_{o}|1alpha+X_{o}beta,phi^{-1} I_{n{o}})\ pi(beta_{i}|phi,tau_{i}^{2})&=N(beta_{i}|0, phi^{-1}tau_{i}^{2})\ pi(tau_{i}^{2})&=Exp left( frac{lambda}{2} right)\ pi(phi)&propto phi^{-1}\ pi(alpha)&propto 1\ end{align*}$$ Marginalizing over (alpha) equates to centering the observations and losing a degree of freedom and working with the centered ( Y_{o} ). Mixing over (tau_{i}^{2}) leads to a Laplace or Double Exponential prior on (beta_{i}) with rate parameter (sqrt{philambda}) The post

Read more »

Introducing H2O Lagrange (2.6.0.11) to R

September 1, 2014
By

From my perspective the most important event that happened at useR! 2014 was that I got to meet the 0xdata team and now, long story short, here I am introducing the latest version of H2O, labeled Lagrange (2.6.0.11), to the R and greater data science communities. Before joining 0xdata, I was working at a competitor on a rival project and was repeatedly asked...

Read more »

Reading the Gauss-Markov theorem

August 26, 2014
By
Reading the Gauss-Markov theorem

What is the Gauss-Markov theorem? From “The Cambridge Dictionary of Statistics” B. S. Everitt, 2nd Edition: A theorem that proves that if the error terms in a multiple regression have the same variance and are uncorrelated, then the estimators of the parameters in the model produced by least squares estimation are better (in the sense Related posts:

Read more »

Statistics: Losing Ground to CS, Losing Image Among Students

August 26, 2014
By

by Norman Matloff The American Statistical Association (ASA) leadership, and many in Statistics academia. have been undergoing a period of angst the last few years, They worry that the field of Statistics is headed for a future of reduced national influence and importance, with the feeling that: The field is to a large extent being usurped by other disciplines,...

Read more »

Statistics: Losing Ground to CS, Losing Image Among Students

August 26, 2014
By
Statistics:  Losing Ground to CS, Losing Image Among Students

The American Statistical Association (ASA)  leadership, and many in Statistics academia. have been undergoing a period of angst the last few years,  They worry that the field of Statistics is headed for a future of reduced national influence and importance, with the feeling that: The field is to a large extent being usurped by other

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)