Before revision:  As a result, we can use a recent randomized algorithm to solve the problem, which offers an approximation factor of 1/e . Finally, we illustrate our theoretical findings by performing experiments on synthetic and real lending data .
After revision:  As a result, we can use a recent randomized algorithm to solve the problem, which also offers approximation guarantees . Finally, we illustrate our theoretical findings by performing experiments on synthetic and real lending data .