Freakonometrics » Datamining

Today, second post of our series on classification from scratch, following the brief introduction on the logistic regression. Piecewise linear splines To illustrate what’s going on, let us star...

https://freakonometrics.hypotheses.org/52771

Let us start today our series on classification from scratch… The logistic regression is based on the assumption that given covariates , has a Bernoulli distribution,The goal is to estimate par...

https://freakonometrics.hypotheses.org/52747

Before my course on « big data and economics » at the university of Barcelona in July, I wanted to upload a series of posts on classification techniques, to get an insight on machine learning...

https://freakonometrics.hypotheses.org/52731

Consider the following dataset, with (only) ten points x=c(.4,.55,.65,.9,.1,.35,.5,.15,.2,.85) y=c(.85,.95,.8,.87,.5,.55,.5,.2,.1,.3) plot(x,y,pch=19,cex=2) We want to get – say – two cluster...

https://freakonometrics.hypotheses.org/19180

J’animerai une formation lundi 28 de 14:00 à 16:00 au local N-6320 de l’UQAM sur le thème introduction aux arbres de classification. Cette formation est organisée dans le cadre des sémi...

https://freakonometrics.hypotheses.org/13822

Le Cœur des Sciences, à Université du Québec à Montréal, organise le 13 février prochain, à 18h, un débat grand public sur le Big Data, dans le cadre d’un bar des sciences, auquel je...

https://freakonometrics.hypotheses.org/12135

To get back to a question asked after the last course (still on non-life insurance), I will spend some time to discuss ROC curve construction, and interpretation. Consider the dataset we’ve bee...

https://freakonometrics.hypotheses.org/9066

We have seen yesterday that finding an optimal strategy to publish is not that simple. And actually, it can be even more difficult in the case the journal rejects the paper (not because it is not...

https://freakonometrics.hypotheses.org/2208