With an indexed bond you don't have to do this calculation to get the real rate.

对于物价指数债券,你无需,通过以上计算得到实际利率

耶鲁公开课 - 金融市场课程节选

It says that the forward rate, which you can compute from today's newspaper or from today's website--you can compute the forward rates for all future dates.

这些告诉我们,人们可以从今天的报纸,或网上的信息中计算出,未来任意时刻的远期利率

耶鲁公开课 - 金融市场课程节选