Visualising and exploring multivariate datasets using singular value decomposition and self organising maps
July 17th, 2007Hola from Madrid, I’ve come here for a data analysis summer school. Last week, there was an interesting class on dimensionality reduction, and since multivariate datasets are prevalent in this -omic era, I thought to post a discussion of what I learnt. The aim of this example is illustrate one technique for visualising multivariate data, singular value decomposition, and a second technique for exploring it, self organising maps.