Discussion of Renewal-Based Composition:
Renewal-based composition is a technique aimed at mitigating the accumulation of privacy loss over time or across repeated analyses. It introduces the concept of ”renewal,” where the privacy parameters are periodically refreshed. This helps prevent the gradual degradation of privacy due to the sequential execution of multiple analyses.
Renewal-based composition is particularly relevant in scenarios where queries are performed periodically or when analyses are conducted on a stream of continuously arriving data. By resetting privacy parameters at specific intervals, renewal-based composition maintains a strong level of privacy even in long sequences of analyses.