評估組織的競爭力，是一種多準則的決策問題，涉及許多複雜的準則、以及必須開發一套權重系統。旅遊與觀光競爭力指數是一個評量工具，可以用來評估旅遊與觀光部門的國際競爭力。然而，旅遊與觀光競爭力指數欠缺合理的權重系統，將所有的指數要素視為同等重要，顯然是不合理。為此，本研究結合波達計數法和灰色系統理論，以期建構一套有用的旅遊與觀光競爭力指數之權重系統。

Assessing an organization’s competitiveness is a mu1tiple decision-making (MCDM) problem that usually requires handling a set of criteria together with developing a weighting system. Travel & Tourism Competitiveness Index (TTCI) can be applied as an evaluation tool for measuring the global competitiveness of the Travel & Tourism (T&T) sector in different countries. However, the TTCI is lacking a favorable weighting system because it allows all sub-indexes to be equally important. This is usually not true in the real world. Here arises an imperative issue of how to design a weighting system for the TTCI. Hence, this paper employs Borda count and grey system theory to deal with the task of building a weighting system which is a complex MCDM problem