| Summary: | 碩士 === 南台科技大學 === 工業管理研究所 === 96 === Performance appraisal is an important issue for human resource management. It aims to manage the company’s internal operations and motivate the workers’ performance, and also lays a direct impact on the employee’s bonuses and promotion. Therefore, the method of appraisal and calculation would deeply influence the result and further to achieve the objectives of appraisal.
This study is based on the case company's annual appraise performance. First, the linguistic variables were applied to grade the extent of the scale for each question in the appraisal and the appropriate fuzzy interval approximation was proposed. There are several reasons to apply linguistic variable to this study in consideration of the advantages of its similar thinking patterns and habits to human beings, which is easier to carry out, more apprehensible and more flexible. However, the complicated calculation has also become its disadvantage. In order to decrease the degree of the calculation complication and to satisfy the effectiveness, this study proposed a fuzzy discretize approximation approach to improve of the calculating performance while linguistic variable is exerted in the performance appraisal.
A comparison has been made between discretized fuzzy arithmetic and the traditional de-fuzzy method. Although the orders of the results in performance appraisal are the same, but the individual result in traditional de-fuzzy method is deviated after weighted average. It also found that discretized fuzzy arithmetic tend to be more effective than the traditional one. The company is commonly encouraged to adopt discretized fuzzy arithmetic to improve the effectiveness for the performance appraisal result.
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