| In this study we use the fuzzy set theory to combine the model base with
the knowledge base to build a Fuzzy Expert Decision Support System for strategic
path choice (FEDSS).
Then, by FEDSS, the manager can solve the fuzzy information as well as the
subjective judgement problems when making the strategies.
The FEDSS includes :
(1)Knowledge base: It has three sub-knowledge bases-the subsystem of business
sates, the subsystem of strategies, and the subsystem of a-cuts.
We have 130 rules in the knowledge base.
(2)Model base: The model base combines fuzzy Delphi, fuzzy multiple-leveled
evaluation method, Procter and Hassard's product portfolio model to develop a
fuzzy multi-attribute decision model, which will be used to evaluate the
performance of the product portfolio,
(3)lnference engine: We use the Zadeh fuzzy reasoning method to infer the
In the end, we use the Yieh Loong steel group as a case study to build the
FEDSS. The empirical study shows that this system can provide some strategic
suggestions and can help the managers make proper competitive strategies.
Our strategic suggestions are similar to those of human experts.