結合模糊層級分析與模糊資料包絡法於績效評估研究-以T公司供應商評選為例

An Integration of Fuzzy AHP and Fuzzy DEA for Performance Evaluation: A Case Study for the Supplier Evaluation of T-Company

李亮穎(Liang-Ying Lee)

指導教授 ： 郭人介

國立臺北科技大學/管理學院/工業工程與管理系所/碩士(2006年)

摘要

本研究方法結合了模糊層級分析法(Fuzzy AHP)和模糊資料包絡法(Fuzzy DEA)，對企業體系在選擇評估供應商時，提供了一套改良式的評估方法，對於評估供應商缺失的資料或是有爭議性的資料，導入模糊數，運用其模糊值效率值排序來找最佳之供應商，對其效率改進作分析對策，並導入指標權重，摒除傳統資料包絡法評估數量受到DMU個數之影響，即使沒有完整資料，或是評估之供應商較少，也能有效的評估各供應商之績效值，且對績效較差的供應商也可提出有效率的改善建議。研究方法分為兩個階段，在第一階段我們結合了模糊層級分析法，將各指標定義後，經過專家學人問卷填寫及建立成對比較模糊化之正倒值矩陣，在一致性檢定通過後，對各指標給予一個合理的權重範圍，再導入第二階段的模糊資料包絡法，進行供應商之選擇與評估、分析改善。
本研究以國內某汽車車燈製造廠-T公司之供應商評估為例，依照研究方法，對各個供應商做績效評估，也提供績效較差的供應商做有效率的改善與建議，其分析結果也和原始的模糊資料包絡法比較，以驗證本研究方法之目的。

關鍵字

供應商選擇 ； 績效評估 ； 模糊資料包絡分析法 ； 模糊資料層級法

並列摘要

This research integrates fuzzy AHP and fuzzy DEA in order to evaluate performance when a company selects suppliers; for comparison with competitive companies, it provides an evaluative methodology for the company to employ. The evaluations with missing data conduct fuzzy number to fuzzy DEA conversion, and add the concept of the fuzzy AHP which establishes factors opposite to their significance to find best supplier. Since the efficiencies calculated are also fuzzy numbers, appropriate ranking methods are required in order to determine the order of each supplier. From the addition of factors with opposite significance in Fuzzy DEA, even if there are fewer suppliers, performance evaluation can proceed efficiently. The solution procedures for efficiency improvement in the fuzzy DEA model are also proposed. The research is composed of two phases, the first phase use fuzzy AHP to establish factors of opposite significance, proceed to fuzzy DEA of the second phase in order to evaluate performance and improve efficiency.
A case study for the supplier evaluation problem is based on an auto lighting manufacturer in Taiwan (T-company), with performance evaluation of each supplier, in order to provide an efficient improvement method. The result is compared with the original fuzzy DEA to show that the proposed method can overcome the evaluation problem of a diminished number of candidates under consideration.

並列關鍵字

Supplier Selection ； Performance Evaluation ； Fuzzy DEA ； Fuzzy AHP

參考文獻

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