1035 search results for "latex"

What happens if we forget a trivial assumption ?

October 4, 2014
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What happens if we forget a trivial assumption ?

Last week, @dmonniaux published an interesting post entitled l’erreur n’a rien d’original  on  his blog. He was asking the following question : let , and denote three real-valued coefficients, under which assumption on those three coefficients does has a real-valued root ? Everyone aswered , but no one mentioned that it is necessary to have a proper quadratic equation,...

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Cross Validation for Kernel Density Estimation

October 1, 2014
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Cross Validation for Kernel Density Estimation

In a post publihed in July, I mentioned the so called the Goldilocks principle, in the context of kermel density estimation, and bandwidth selection. The bandwith should not be too small (the variance would be too large) and it should not be too large (the bias would be too large). Another standard method to select the bandwith, as mentioned...

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Error propagation based on interval arithmetics

September 27, 2014
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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

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Multiple Tests, an Introduction

September 24, 2014
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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)...

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a weird beamer feature…

September 23, 2014
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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

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momentify R package

September 19, 2014
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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

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

September 17, 2014
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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...

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

September 16, 2014
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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...

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A Brief Introduction to Plotly

August 28, 2014
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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 →

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

August 27, 2014
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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...

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