By using active set strategy, the authors need only to solve a reduced trust region subproblem which is solved inexactly by the truncated conjugate gradient method.
作者利用有效集策略，在每次迭代中只需求解一个低维
信赖域子问题，该信赖域子问题是通过截断共轭梯度法来近似求解。
;,可比拟;;By using active set strategy, the authors need only to solve a reduced trust region subproblem which is solved inexactly by the truncated conjugate gradient method.
作者利用有效集策略，在每次迭代中只需求解一个低维信赖域子问题，该信赖域子问题是通过截断共轭梯度法来近似求解。
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