Table 1 Overview of symbols
Symbol | Definition |
|---|---|
m | Number of parties involved in the MPC protocol |
N | Secret-sharing modulus |
n | Number of subjects |
\({\mathcal {I}}\) | Set of all subjects |
J | Number of distinct event times |
\({\mathcal {D}}_j\) | Set of subjects that experience an event at time \(t_j\) |
\(d_j\) | Number of subjects that experience an event at time \(t_j\); \(|{\mathcal {D}}_j|\) |
\({\mathcal {R}}_j\) | Set of subjects at risk (alive and uncensored) at time \(t_j\) |
\(L(\cdot )\) | Log-likelihood function for CPH model |
p | Number of covariates |
\(\varvec{Z}\) | p-Dimensional vector of explanatory covariates |
\(\varvec{\beta }\) | p-Dimensional vector of model parameters |
\(\varvec{Z}^I\) | Realisation of the p-dimensional covariate vector \(\varvec{Z}\) for subject I |