in letteratura, per l’imputazione dei dati mancanti nelle serie storiche, si fa riferimento a statistiche applicate all’intera serie analizzata (e.g. media di tutti i termini della serie), ottenendo una costante d’imputazione generalmente adeguata per una specifica serie. Se le serie sono...

In missing-data analysis, Little's test (1988, Journal of the American Statistical Association 83: 1198–1202) is useful for testing the assumption of missing completely at random for multivariate, partially observed quantitative data. I introduce the mcartest command, which implements Little's...

We develop canonical correlation analysis in the context of two-step monotone incomplete data drawn from Np+q(μ,Σ), a multivariate normal population with mean μ and covariance matrix Σ. Our data consist of n observations on each group and an additional N−n observations on only one group,...

In this paper, we consider the problem of missing data, and develop an ensemble-network model for handling the missing data. The proposed method is based on utilizing the inherent uncertainty of the missing records in generating diverse training sets for the ensemble's networks. Specifically we...

Customer management activities at firms involve making consistent decisions over time, about: (a) which customers to select for targeting, (b) determining the level of resources to be allocated to the selected customers, and (c) selecting customers to be nurtured to increase future...

In this contribution we demonstrate that European citizens distinguish between political and instrumental Euro-scepticism and indicate the extent to which these Euro-sceptic positions are endorsed. Data from 143,367 European citizens in 15 countries and 182 regions show that political...

This paper examines properties of test statistics for random effects with incomplete panel data. We can divide incomplete panel data into two groups. One group arises from randomly missing or unbalanced data and the other arises from systematically missing data. We focus on the former case. Some...