: an online parameter optimization (OPO) system
[17], for automating tuning of one or more parameters of a search advertising system using live traffic.
The system removes the need for manual tuning and constant human intervention, while searching a larger parameter space in less time than was possible by manual searches.
The system ingests events emitted by the target system (in our case, the search advertising system), measures performance, applies an adaptation algorithm to determine new parameters, and injects the new parameters back into the target system. This closed loop approach is similar in principle to traditional control systems.