Cox Node Settings Options

Predict survival at future times. Specify one or more future times. Survival, that is, whether each case is likely to survive for at least that length of time (from now) without the terminal event occurring, is predicted for each record at each time value, one prediction per time value. Note that survival is the "false" value of the target field.

• Regular intervals. Survival time values are generated from the specified Time interval and Number of time periods to score. For example, if 3 time periods are requested with an interval of 2 between each time, survival will be predicted for future times 2, 4, 6. Every record is evaluated at the same time values.
• Time fields. Survival times are provided for each record in the time field chosen (one prediction field is generated), thus each record can be evaluated at different times.

Past survival time. Specify the survival time of the record so far—for example, the tenure of an existing customer as a field. Scoring the likelihood of survival at a future time will be conditional on past survival time.

Note: The values of future and past survival times must be within range of survival times in the data used to train the model. Records whose times fall outside this range are scored as null.

Append all probabilities. Specifies whether probabilities for each category of the output field are added to each record processed by the node. If this option is not selected, the probability of only the predicted category is added. Probabilities are computed for each future time.

Calculate cumulative hazard function. Specifies whether the value of the cumulative hazard is added to each record. The cumulative hazard is computed for each future time.