层次分析法即AHP（Analytic Hierarchy Process）是美国运筹学家沙旦（T.L.Saaty）于70年代提出的一种定性与定量分析相结合的多目标决策分析方法，运用层次分析法，建立企业自身或目标企业（研究竞争对手）的主要竞争力要素、绩效水平评价指标及绩效水平的层次关系数学模型；分析企业各竞争力要素对企业绩效水平的影响程度，形成企业自身或有力竞争对手的竞争力要素重要度排序，从定性和定量的角度来确定出企业的核心竞争力，以便决策者拟定市场竞争战略决策。并以大丰有限责任公司的实际情况为例，验证了此种分析方法在决策过程中的实用性和可操作性。

Analytic Hierarchy Process(AHP),a qualitative and quantitative method for multi target decision, was first brought up by T.L.Saaty in 1970s. By using AHP, the author establishes a mathematic model of hierarchy relationship among competitive factors, evaluation indexes for performance and level of performance, To analyze influences of each competitive factor on performance and create arrangement of competitive factors in terms of importance to performance of enterprise own or rival firms, and ascertain core competence according to qualitative and quantitative analysis to support competitive decisions in markets. Finally the result of this research is applied to DaFeng Ltd. and its' feasibility and practicality in decision can be tested and verified.

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