大家好！我现在在做anti-money laundering,然后老板给了我一篇SAS出版的文章，讲到了一个structuring factor, which means the 'velocity of funds', 公式是 (x^2 * y^1.9) / [(2 * CTR limit -  x) ^ 1.6 * z ^ 1.4],
x = miniimum daily transaction amount
y =  number of business days at or above the amount
z = number of business days in the interval examined
CTR limit is set as given by regulatory agency
然后让我想想这个公式怎么得来的，我不会，也查不到，请大家帮我看一下？他说他以前见过这个式子，可能用到了partial integration or log.....