Survival Analysis

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Survival analysis studies how long it may take before an event happens.

What it does

Survival analysis studies how long it may take before an event happens.

Churn: When a customer leaves • Hazard: The danger of an event

How it works

  • Track when the event happens for past examples.
  • Estimate the chance the event happens over time.
  • Use the curve to plan before the event happens.

Uses and applications

  • A subscription app can spot customers who may cancel soon and offer help.
  • A phone company can predict when batteries may need replacement.
  • A hospital study can measure time until recovery or another health event.

In short

A typical use is predicting when a customer may leave.

Related methods

  • Prophet: Forecasts future values instead of time until an event.
  • Logistic Regression: Predicts whether an event happens, without timing.

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