The paper offers a dual problem for the semi-infinite convex programming by using the directional derivative with zero dual gap.

本文对半无限凸规划提出一个用方向导数表述的对偶问题，其对偶间隙为零。

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It has been applied into the new product introduction problem presented by a semi-infinite programming model. The satisfactory results have been achieved.

算法用于求解用半无限规划模型描述的新产品投入计划问题，获得了满意的结果。

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