Change detection
STATISTICAL ANALYSIS INVOLVED IN DETECTING WHETHER OR NOT A CHANGE HAS OCCURRED, AND IDENTIFYING THE TIMES OF ANY SUCH CHANGES
Changepoint detection; Change point detection
In statistical analysis, change detection or change point detection tries to identify times when the probability distribution of a stochastic process or time series changes. In general the problem concerns both detecting whether or not a change has occurred, or whether several changes might have occurred, and identifying the times of any such changes.