The jointly use of two latent factors methods is proposed to assess a measurement instrument for underlying phenomena. In particular the decay status of valuable Italian buildings is quantified on the basis of a wide set of observed categorical variables. At the purpose, Rasch analysis is used...

Fractal image coding generally seeks to express an image as a union of spatially contracted and greyscale modified copies of subsets of itself. Generally, images are represented as functions u(x) and the fractal coding method is conducted in the framework of L2 or L1. Here we formulate a method...

The telegraph process $X(t)$, $t0$, (Goldstein, 1951) and the geometric telegraph process $S(t) = s_0 \exp\{(\mu -\frac12\sigma^2)t + \sigma X(t)\}$ with $\mu$ a known constant and $\sigma0$ a parameter are supposed to be observed at $n+1$ equidistant time points $t_i=i\Delta_n,i=0,1,\ldots, n$....

In this paper, we develop a general collage coding framework for inverse problems in partial differential equations (PDEs) with boundary conditions. Although a general PDEs inverse problem can be very complicated, via the Generalized Collage Theorem in this paper, many such problems can be...

The term CRM, Customer Relationship Management, is one of the most used word both in Marketing and IT literature and applications. This term is most of the time used as a replacement of a misleading narrow term: Relationship Management (RM). Operations, Customer Service, Sales, human resources,...

In this paper we describe some applications of the Random Recursive Partitioning (RRP) method. This method generates a proximity matrix which can be used in non parametric hot-deck missing data imputation, classification, prediction, average treatment effect estimation and, more generally, in...

Building on the principles of the classical thoey of fiscl federalism, the new political economy of multi-level government indicates a number of criteria asa guide for the efficient assignment of competencies between the European Union (EU) and the member states: internalize interregional...

In this paper we contrast the received view according to which Walras' and Marshall's approaches to price theory, while differing in scope, are basically similar in their aims, presuppositions, and results. By focusing on a special kind of economy (the pure-exchange, two-commodity economy),...

This paper aims to classify eighteen European regions on the basis of various criteria which reflect the overall performance of services of general interest, as perceived by consumers. The analysis is based on the Eurobarometer survey carried out in 2002, at the request of the European...

We introduce a method of iterated function systems (IFS) over the space of set-valued mappings (multifunctions). This is done by first considering a couple of useful metrics over the space of multifunctions F(X,Y). Some appropriate IFS-type fractal transform operators T:F(X,Y)-F(X,Y) are then...