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Table 5 Unrotated factor loadings and communalities – Existing network
From: Performance assessment of alternative SSS networks by combining KPIs and factor-cluster analysis
Variable | Factor 1 | Factor 2 | Factor 3 | Factor 4 | Factor 5 | Factor 6 | Factor 7 | Factor 8 | Communality |
|---|---|---|---|---|---|---|---|---|---|
WD - Weekly Demand | −0.396 | 0.036 | −0.816 | 0.072 | 0.414 | −0.005 | 0.007 | 0.001 | 1.000 |
WF - Weekly Frequency | −0.802 | 0.530 | 0.065 | 0.116 | −0.051 | 0.234 | −0.032 | −0.015 | 1.000 |
NS - N. of intermediate Stops | 0.557 | 0.133 | −0.261 | 0.751 | −0.199 | −0.023 | 0.003 | −0.005 | 1.000 |
SD - Sailing Distance | 0.356 | 0.527 | −0.567 | −0.402 | − 0.332 | −0.039 | − 0.021 | −0.014 | 1.000 |
RWT – Ratio WT/TT | 0.791 | −0.585 | 0.029 | −0.062 | 0.146 | 0.064 | −0.013 | −0.040 | 1.000 |
OC - Operating Cost | 0.656 | 0.697 | 0.167 | −0.045 | 0.166 | 0.033 | 0.162 | −0.001 | 1.000 |
TC - Time Cost | 0.913 | −0.261 | −0.224 | − 0.098 | −0.029 | 0.188 | −0.027 | 0.029 | 1.000 |
UE – Unitary Emission of CO2 | 0.608 | 0.694 | 0.246 | 0.025 | 0.254 | −0.052 | −0.145 | 0.002 | 1.000 |
Eigenvalue | 3.4970 | 1.9539 | 1.1989 | 0.7602 | 0.4374 | 0.1001 | 0.0496 | 0.0029 | 8.000 |
% Var | 0.437 | 0.244 | 0.150 | 0.095 | 0.055 | 0.013 | 0.006 | 0.000 | 1.000 |