Based on a fuzzy matching model and a fuzzy evaluating model, a multi-layer model is provided for quantitative discription of the similarity at different layers. 該策略在模糊匹配模型和模糊評價(jià)模型基礎上,通過(guò)建立多層次評價(jià)模型,定量描述實(shí)例在不同層次的相似性,綜合評價(jià)選出最適當的實(shí)例。