Mr Varian and Mr Choi show that the addition of these search trends to econometricmodels improves the accuracy of their estimates.
Varian和Choi表示，共同利用这些搜索趋势和经济计量模型就能够提高预测的准确性。
2
Lucas looked at the large econometricmodels of the 1970s, models that contained hundreds of variables relating economic aggregates like income, consumption, unemployment and so forth.
Most western central Banks measure inflation expectations by questionnaire and econometricmodels, and use a variety of methods to manage inflation expectation.