Table 7 Contribution of the original variables to the first principal component. The scalar projection w of the first (PC 0) and second (PC 1) principal components, along the axis defined by each of the original variables. Each principal component has unit norm, hence the sum of \(w^{2}\) is 1. Results are shown for the CNS and MDC datasets

Social circle size, k

Activity space size, C

New ties/week, \(n_{\mathrm{tie}}\)

New locations/week, \(n_{\mathrm{loc}}\)

Social circle entropy, \(H_{\mathrm{SC}}\)

Activity space entropy, \(H_{\mathrm{AS}}\)

Social circle stability, \(J_{\mathrm{SC}}\)

Activity space stability, \(J_{\mathrm{AS}}\)

Social circle rank turnover, \(R_{\mathrm{SC}}\)

Activity space rank turnover, \(R_{\mathrm{AS}}\)