让TOPSIS方法能灵活调节偏好,实现更可控的决策排序。
Utility Inspired Generalizations of TOPSIS
- 通过引入加权均值与标准差控制排名权重
- 可自由调节对理想点距离的敏感度
- 适合需要个性化偏好的决策场景
TOPSIS是一种基于理想点与反理想点距离的排序方法,传统上被认为与基于效用加权平均的决策方法不同。然而,近期研究发现,其距离可分解为效用的加权均值(WM)与加权标准差(WSD)。标准TOPSIS无法调整这两者的影响。本文在此基础上提出改进,使聚合过程响应WM与WSD,实现对排名影响的可解释控制。新方法可自然退化为原TOPSIS,也可根据决策者偏好在WM与WSD间权衡,甚至渐进转化为经典效用方法。整体而言,该通用化框架为决策者提供了一种可控的新偏好表达工具。
原文摘要 · Abstract (English)
TOPSIS, a popular method for ranking alternatives is based on aggregated distances to ideal and anti-ideal points. As such, it was considered to be essentially different from widely popular and acknowledged `utility-based methods', which build rankings from weight-averaged utility values. Nonetheless, TOPSIS has recently been shown to be a natural generalization of these `utility-based methods' on the grounds that the distances it uses can be decomposed into so called weight-scaled means (WM) and weight-scaled standard deviations (WSD) of utilities. However, the influence that these two components exert on the final ranking cannot be in any way influenced in the standard TOPSIS. This is why, building on our previous results, in this paper we put forward modifications that make TOPSIS aggregations responsive to WM and WSD, achieving some amount of well interpretable control over how the rankings are influenced by WM and WSD. The modifications constitute a natural generalization of the standard TOPSIS method because, thanks to them, the generalized TOPSIS may turn into the original TOPSIS or, otherwise, following the decision maker's preferences, may trade off WM for WSD or WSD for WM. In the latter case, TOPSIS gradually reduces to a regular `utility-based method'. All in all, we believe that the proposed generalizations constitute an interesting practical tool for influencing the ranking by controlled application of a new form of decision maker's preferences.
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