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“LA MISURAZIONE DELLA PASSENGER SATISFACTION CON L'AUSILIO DI TECNICHE STATISTICHE MULTIVARIATE”
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Testing interpoint distance in non-simmetrical correspondence analysis
No full textNon Symmetrical Correspondence Analysis (NSCA, 1989) is a well-known
technique that allows us to display the directional relationship of a two-way
contingency table. NSCA is the obvious extension of classical Correspondence
Analysis (CA; Benzécri 1969,1973) when the rows modalities influences the row
variable depends on column variable. NSCA starts form the properties that ( in the
same manner of CA), the index that measure the departure from the independence
hypothesis proposed by Goodman and Kruskal (1954) can be decomposed along
principal axes. The NSCA allows us to represent in a low dimensional subspace the
row and column profile coordinates. From an inferential point of view, the
confidence circles can be computed to test which modalities are significant at a
fixed error level but it is moreover important to test the significance between any
couple of point. In this paper we adapt the test proposed by Gabriel (1995) to test
the difference between two profiles
Lo studio della dipendenza nelle tabelle di contingenza a tre-vie con i polinomi ortogonali
No full textLa misurazione della Passenger Satisfaction con l'ausilio di Tecniche Statistiche Multivariate
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Goodness of fit measures for logistic regression model: an application for students’ evaluations of university teaching
No full textAnalyzing AHP-matrices by Partial Least Squares Regression
No full textThe Analytic Hierarchy Process (AHP) [9] is a powerful process to
help people to express priorities and make the best decision when both
qualitative and quantitative aspects of a decision need to be considered.
In this paper, in order to eliminate the influence of outliers, we
use an approach based on Robust Partial Least Squares (R-PLS)[13]
regression for the computation of the values for the weights of a comparison
matrix. A simulation study to compare the results with other
methods for computing the weights proposed to analyze comparison
matri
Taxicab Non Symmetric Correspondence Analysis for the Evaluation of the Passenger Satisfaction
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