A note on the measurement of poverty persistence
在多期框架下构建了一个包含贫困持续性的贫困指数，该指数可分解为发生率、强度和不平等，并解释为贫困的社会成本估计。
This paper introduces a poverty index that incorporates poverty persistence as an integral part of poverty measurement within a multiperiod framework. Using familiar tools (logarithmic utilities and a utilitarian social welfare function) we obtain a mathematically straightforward poverty index, which can be interpreted as an estimate of the social cost of poverty. This index can be neatly decomposed into incidence, intensity, and inequality, and is additively decomposable by population subgroups. It consists of the log of the geometric mean of individual intertemporal utility losses.