The number of bilateral and multilateral trade agreements has surged in recent years. In order to benefit from preferential tariff rates,firms must apply and comply with rules of origin requirements. This is costly and explains why preference utilization rates (PUR) are far below 100 percent. In...

It is well known that the conventional CUSUM test suffers from low power and large detection delay. We therefore propose two alternative detector statistics. The backward CUSUM detector sequentially cumulates the recursive residuals in reverse chronological order, whereas the stacked backward...