The damage estimator was trained to learn the relationship among bridge coordinates, structure types, PGAs and damage levels to bridges based on the data collected from the 1999 Chi-Chi earthquake.

• 另外一方面，利用在921地震中所调查到的桥梁基本资料、PGA加速度以及桥梁实际破坏情形则作为训练类神经网路系统的资料。