NO.PZ2023040701000042
问题如下：
Annisquam tells Hake that he needs to calibrate the binomial interest rate tree to match a term structure of interest rates. Hake wants to better understand this process and asks Annisquam to describe it. Annisquam says, “Calibrating an interest rate tree requires an iterative process that ensures that the upper and lower rates are consistent with the volatility assumption, the interest rate model, and the observed market value of the benchmark bond. The cash flows of the bond are discounted using the interest rate tree, and if this doesn’t produce the correct price, another pair of forward rates is selected and the process is repeated.”
Is Annisquam most likely correct in regard to his comments on calibrating a binomial interest rate tree?
选项：
A.
Yes
B.
No, he incorrectly describes the iterative process
C.
No, he is incorrect regarding the interest rate used
解释：
Correct Answer: A
Annisquam is correct with regards to his comments on calibrating a binomial interest rate tree.
老师 为啥calibration是重新选一组forward rate再计算, 这里指的是二叉树某时间点的 forward rate, 再向上下扩散的那个forward rate吗？calibration不是应该根据算出来的价格+-分母spread来调整直到得到准确价格为止吗
