As guidance for the future path of monetary policy, while demonstrating its determination by indicating a timeframe of “about two years,” the Bank decided to link the continuation of monetary easing with the policy target under QQE by committing to continuing with QQE “as long as it is necessary for maintaining the 2 percent price stability target in a stable manner,” and thus incorporated elements of an open-ended framework.
The guidance possesses a  BIS central bankers’ speeches  5  state dependent aspect since QQE will respond accordingly to the status of economic activity and prices. By incorporating elements of an open-ended framework, a “stabilizing mechanism” is expected to operate.