Large Numbers of experiments show that the combination strategy is effective, and the two algorithms have better performance and convergence than LU factorization and conjugate gradient method.

大量实验结果表明此结合策略是很有效的，得到的两种算法具有较快的速度和较好的收敛性。

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Nonlinear programming techniques, branch and bound algorithms and incomplete Cholesky decomposition conjugate gradient method (ICCG) are the three main parts of our work.

非线性优化技术、分枝定界算法和不完全乔莱斯基分解的预优共轭梯度法是该工作的三个主体部分。

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