 Autoregressive conditional duration

Autoregressive Conditional Duration (ACD) is a statistical modeling framework primarily used in the analysis of time series data, particularly in situations where the timing of events is of interest. It is often applied in fields such as finance, econometrics, and survival analysis to model the durations between consecutive events. ### Key Concepts: 1. **Duration**: In this context, duration refers to the time interval between consecutive occurrences of an event.