# Interpretation of Weibull Survival Time Prediction from a Survreg Object

Code is somewhat like this:

    model=survreg(Surv(Years, Event) ~ asset_age + install_date +
no_of_failure, data=weibull_data_train, dist="weibull")

prediction=predict(model, weibull_data_test)


The prediction gives a numeric output in years. My question is, does that output value represent the time from the install_date, or from the time the data was collected onwards?

Only you can answer this question correctly. A predicted survival time will be time from whatever you used as the reference time = 0 for your Years value in your model.
If you used a reference time = 0 for each item at its install_date, then yes: the prediction will be time elapsed from the install date. If you used some other reference for time = 0, then it will be time elapsed from that reference time.