Feature models represented by Feature Diagrams (FDs) prevail in the software product line approach. The product line approach and FDs are used to manage variability and complexity of software families and to ensure higher quality and productivity of product development through higher-level feature modeling and reuse. In this paper we, first, analyze the properties of feature models. Then, combi...

Feature Oriented Programming (FOP) is a general theory of software development where programs are assembled by composing feature modules. A feature X interacts structurally with another feature Y by changing Y’s source code. We advance FOP by proposing an algebraic theory of structural feature interactions that models feature interactions as derivatives. We use our theory to show how a legacy J...

Facial recognition is one of the most challenging and interesting problems within the field of computer vision and pattern recognition. During the last few years, it has gained special attention due to its importance in relation to current issues such as security, surveillance systems and forensics analysis. Despite this high level of attention to facial recognition, the success is still limite...

We carry out a semi-structural analysis aiming at estimating the macroeconomic effects of shocks to inflation expectations. We estimate a Structural Factor Model for the euro area, which includes more than 200 quarterly variables. By using such a wide information set we are able to: 1) identify structural shocks which a small-scale VAR would not be able to retrieve; 2) avoid any variable select...