Libri di Maurizio Carpita - libri Statistica & Applicazioni

Forecasting the steel product prices with the ARIMA model digital

Year: 2016

The following paper describes the results of the forecast activity applied on steel prices time series, the method used in this analysis is a rolling window ARIMA regression. The forecast activity is built on prices time series that have been collected by anonymous weekly surveys sent to a sample of steel Italian operators...

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Su una modifica dell’indice di corrispondenza semplice utilizzato nelle analisi multidimensionali di dati qualitativi digital

by Maurizio Carpita

Year: 2004

In multidimensional analysis for qualitative data a similarity and/or dissimilarity matrix is commonly used.

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Metodi per la costruzione di indicatori della qualità del lavoro: un’applicazione al settore dei servizi sociali digital

by Maurizio Carpita

Year: 2003

This paper takes into account the possibilities of the optimal scaling algorithm Princals ( principal component analysis by means of alternating least squares). This algorithm simultaneously gives both a measure of ordered answer categories and a weight referring to the importance to be attributed to each item.

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