"The committee continues to anticipate that the economic conditions -- including low rates of resource utilization, subdued inflation trends and stable inflation expectations -- are likely to warrant exceptionally low levels for the federal funds rate for an extended period."

VOA: special.2011.04.29

Remember, it's one and a half times inflation rate plus a half time the GDP utilization 1 plus 1.

注意，公式是，1。5倍通货膨胀率,加上0。5倍实际GDP与名义GDP的百分比,再加上恒常数。

斯坦福公开课 - 经济学课程节选