1023 search results for "latex"

Error propagation based on interval arithmetics

September 27, 2014
By
Error propagation based on interval arithmetics

I added an interval function to my ‘propagate’ package (now on CRAN) that conducts error propagation based on interval arithmetics. It calculates the uncertainty of a model by using interval arithmetics based on (what I call) a “combinatorial sequence grid evaluation” approach, thereby avoiding the classical dependency problem that often inflates the result interval. This

Read more »

Multiple Tests, an Introduction

September 24, 2014
By
Multiple Tests, an Introduction

Last week, a student asked me about multiple tests. More precisely, she ran an experience over – say – 20 weeks, with the same cohort of – say – 100 patients. An we observe some size=100 nb=20 set.seed(1) X=matrix(rnorm(size*nb),size,nb) (here, I just generate some fake data). I can visualize some trajectories, over the 20 weeks, library(RColorBrewer) cl1=brewer.pal(12,"Set3") cl2=brewer.pal(8,"Set2") cl=c(cl1,cl2)...

Read more »

a weird beamer feature…

September 23, 2014
By
a weird beamer feature…

As I was preparing my slides for my third year undergraduate stat course, I got a weird error that got a search on the Web to unravel: which was related with a fragile environment but not directly the verbatim part: the reason for the bug was that the end{frame} command did not have a line

Read more »

momentify R package

September 19, 2014
By
momentify R package

I presented today an arxived paper of my postdoc at the big success Young Bayesian Conference in Vienna. The big picture of the talk is simple: there are situations in Bayesian nonparametrics where you don’t know how to sample from the posterior distribution, but you can only compute posterior expectations (so-called marginal methods). So e.g. you cannot provide

Read more »

Bayes says “don’t worry” about Scotland’s Referendum

September 17, 2014
By
Bayes says “don’t worry” about Scotland’s Referendum

Just few hours before Scots head to the polls, there is not an overwhelming advantage of the anti-independence vote. Actually, the margin is shorter than last time I looked at it, but despite such a growing trend in favor of the "Yes" campaign in the last weeks, the "NO" side has an edge still. To … Read More...

Read more »

how to provide a variance calculation on your public-use survey data file without disclosing sampling clusters or violating respondent confidentiality

September 16, 2014
By

this post and accompanying syntax would not have been possible without dan oberski.  read more, find out why.  thanks dan.dear survey administrator: someone sent you this link because you work for an organization or a government agency that c...

Read more »

A Brief Introduction to Plotly

August 28, 2014
By
A Brief Introduction to Plotly

This is a guest post by Matt Sundquist. Matt studied philosophy at Harvard and is a Co-founder at Plotly. He previously worked for Facebook’s Privacy Team, has been a Fulbright Scholar in Argentina and a Student Fellow of the Harvard Law School Program on the Legal Profession, and wrote about the Supreme Court for SCOTUSblog.com. Emailing… Continue reading →

Read more »

New Wine in an Old Bottle: R Markdown v2 and R Studio on the Cent OS Server

August 27, 2014
By

Introduction New Pandoc Installing LaTeX Packages Introduction R Markdown Version 2 is a boon to students: with a single click one can convert an R Markdown file to either HTML, PDF or Word format. However, getting this feature to work fully in the R Studio server environment may require a bit of work, especially...

Read more »

Adding CITATION to your R package

August 27, 2014
By
Adding CITATION to your R package

Original post from Robin's Blog:Software is very important in science – but good software takes time and effort that could be used to do other work instead. I believe that it is important to do this work – but to make it worthwhile, people need to get credit for their work, and in academia that...

Read more »

The Chi-Squared Test of Independence – An Example in Both R and SAS

The Chi-Squared Test of Independence – An Example in Both R and SAS

Introduction The chi-squared test of independence is one of the most basic and common hypothesis tests in the statistical analysis of categorical data.  Given 2 categorical random variables, and , the chi-squared test of independence determines whether or not there exists a statistical dependence between them.  Formally, it is a hypothesis test with the following null and

Read more »