The Projection Congruent Subset (PCS) is a new method for finding multivariate outliers. PCS returns an outlyingness index which can be used to construct affine equivariant estimates of multivariate location and scatter. In this note, we derive the finite sample breakdown point of these estimators.

It is widely recognized the important role played by human capital, knowledge and innovation for the establishment of the basic conditions for permanent economic growth. On particular aspect of this general issue interests us in particular; the level of economic literacy among young students who...

Biplots display interunit distances, as well as variances and correlations of variables of large datasets. They can be used as a tool to reveal clustering, multicollinearity, and multivariate outliers, and to guide the interpretation of principal component analyses (PCA). This article describes...

This work studies implicitly weighted robust statistical methods suitable for econometric problems. We study robust estimation mainly for the context of heteroscedasticity or high dimension, which are up-to-date topics of current econometrics. We describe a modification of linear regression...

Abstract: To analyze the input/output behavior of simulation models with multiple responses, we may apply either univariate or multivariate Kriging (Gaussian process) metamodels. In multivariate Kriging we face a major problem: the covariance matrix of all responses should remain positive-de...

The maximal correlation problem (MCP) aiming at optimizing correlations between sets of variables plays an important role in many areas of statistical applications. Up to date, algorithms for the general MCP stop at solutions of the multivariate eigenvalue problem (MEP), which serves only as a...

Purpose – Using data from online guest ratings, the purpose of this paper is to explore how the performance of hotels in terms of various criteria influences loyalty behavior of customers. Design/methodology/approach – Ratings of 333 hotels in the UK were collected from the web site...

The introduction of the productivity gains model in the Brazi-lian agriculture has caused important changes in the rural environment, affecting its development. The agricultural sector in Paraná is part of this process and in this state, also, there have been significant shifts in the structure...

Purpose – The aim of this paper is to demonstrate empirically the relationship between firm characteristics and information use within a small and medium sized enterprises (SME) context, proposing that firm characteristics are a catalyst of information use. With marketing information it is...