decision variable的用法和樣例：
例句
- In a directed graph, the decision variables of the shortest path computation must be determined by a constraint that is called Kirchoff's constraint.
摘要已知一個有向圖，求解兩點間的最短路徑的決策變數滿足基爾霍夫約束關係。 - In this paper, we focus on bilevel programming problem with a common decision variable in the upper level and lower level programming.
摘要主要討論上下層具有共同決策變數的一類二層規劃問題的求解方法。
