
| Term | Description |
|---|---|
| yi | the ith response value |
| xi | the vector of predictor values associated with the ith response value |
![]() | the vector of the estimated regression coefficients |

| Term | Description |
|---|---|
![]() | estimated scale parameter |

| Term | Description |
|---|---|
![]() | the estimated survival probability (reliability) for the response value yi |