The each time parameter of construction schedule network planning in the graph may be exposed immediately, the total float and the free float of each work especially.

图上可直接展示施工进度网络计划的各时间参数，特别是各工作的总时差和自由时差。

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In the last, the paper designs and analyses the Graph Theory algorithm and drives a conclusion that the problem of the arranging of curriculum schedule is NP - hard problem.

在文章的最后我们对课表超图的图论算法进行设计与分析，并得出该问题是一个NP难问题。

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Estimate-convergence graph for software development, taken from Lecture 3, entitled "Software Schedule Estimation, " in the lecture notes section. (Image courtesy of MIT OCW. )

软体开发的预估收敛图， 取自课堂讲稿第三课，讲题为「预估软体开发的时程」。（图片由麻省理工学院「开放式课程网页」提供）

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