load_insulator_string

relife.data.load_insulator_string()

Load insulator string dataset containing observed lifetimes, left truncations values and covariates

Returns:

structured array

A numpy structured array of 3 fields :

• time (np.float64) : observed lifetime values

• event (np.bool_) : boolean flag indicated if the event has been observed or not (if False, the observed lifetimes are right censored)

• entry (np.float64) : left truncation values

• pHCl (np.float64) : quantitative covariate values (concentration of pHCl)

• pH2SO4 (np.float64) : quantitative covariate values (concentration of pH2SO4)

• HNO3 (np.float64) : quantitative covariate values (concentration of HNO3)

Examples

>>> from relife.data import load_insulator_string
>>> data = load_insulator_string()
>>> print(data["time"])
[70.  30.  45.  ...  8.8  7.6 53. ]
>>> print(data["pHCl"])
[0.49 0.76 0.43 ... 1.12 1.19 0.35]