實質選擇權是近代興起的管理科學技術，其將金融選擇權的概念運用在實質資產 (e.g. 不動產、公司理財、高科技產業…)，其目的是為了提供決策者在對企業經營進行評估時一種動態且有效的管理模式。利用金融選擇權的原理及動態機率規劃的數理方法，使決策者在不確定性的環境下，可依循管理彈性法則進行決策的參考依據。
本研究之目的為當公司利用實質選擇權分析來評價一個新專案或新開發案的實質選擇權價值。當新開發案尚未決定開發前，若有新資訊進入 (e.g. 探勘、市場調查、試驗、問卷、新政策…）時，此新資訊會影響專案價值。因此我們利用卡爾曼濾波器來進行一連串的修正及預估專案價值，使決策者更精準地知道其
價值並做出正確的決策。

Real option analysis is a valuation way to capital budgeting decision. The real option analysis applies financial options theory to real investments, such as natural resource investments, real-estate, corporate finance, high-tech industry, manufacturing plants, product line extensions, and research and development. The aim of this analysis is offering an important way of thinking about valuation and strategic decision making, and the power of this approach is starting to change the economic “equation” of many industries. Using the financial options theory and dynamic programming, the manager can make decision to the project with managerial flexibility under uncertain
circumstance.
　The aim of this paper is that firms use real options analysis to evaluate a new project or an undeveloped project. Before the firms make decisions, the firms can collect information about the new project. Therefore we use Kalman filter procedure to pre-dict and correct the value of the project. As a result, the manager can precisely know
the value of the project to make a right decision.

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