This is yet another article talking about the binomial distribution and statistical hypothesis testing... I read this very silly article the other day, saying that a police department from some Canadian city calculated how many people from each zodiacal sign they arrested in 2011. The article concludes people from the sign of Aries are more likely to...

I haven't written for many months... And coincidence or not, when I come back, I have a very similar topic from my last post!This article talks about the uncertainty in the estimation of the probability p from a Bernoulli distribution. In other words, given x successes from N trials, we know a good estimate for p is p~x/N. But how sure can we be about...

I have been reading about hypothesis testing. So when Shirley Manson tweeted this:Sophie Muller just pointed out that on our last two albums, 8 song titles have begun with a B. Itunes playlists can be instructive. SxI immediately got myself thinking: Is it really significant? Or is it one of those things that are actually easy to happen, like having...

This post is about the Metropolis algorithm, a Markov-chain Monte Carlo (MCMC) method to produce samples from a given distribution. This is a very powerful method, but using the algorithm requires some tuning of parameters, and also dealing with compromises to archive the best results. I made an experiment that demonstrates that. My main reference is...

This article is about sorting algorithms, and it includes some performance tests for Quicksort I did by myself.Sorting is a big deal in Computer Science. First of all because this is a very important problem. We sort thing in out life very frequently, specially to organize sets of things like product files, student tests or a deck of playing cards for...

Sad news for mankind as one giant hero passed away last week. I must confess I wasn't fully aware Neil Armstrong was still alive. So for me it was one of those strange situations, we first get happy to find out that person was actually alive, and then you get sad with the news, and even more sad to think you didn't know the person was alive. But can...