In this paper, an exploratory hierarchical method to classify variables is introduced as an alternative to principal component analysis when dealing with stock-exchange price time-series. The method is based on a particular principal component analysis applied to pairs of variables, each one...

The digitalization of banking sector is a direct consequence of the overall digitalization of the economy. Today's demand is anytime anywhere banking. This requires innovative, robust, secure, optimized and ready to meet the expectations of empowered and tech-savvy customers. As a result of...