Abstract
In this paper, a wide neighborhood arc-search interior-point algorithm for convex quadratic programming with box constrains and linear constraints (BLCQP) is presented. The algorithm searches the optimizers along the ellipses that approximate the entire central path. Assuming a strictly feasible initial point is available, we show that the algorithm has $$O(n^{\frac{3}{4}}\log \frac{{({x^0} - l)^T}{s^0} + {(w - {x^0})^T}{t^0}}{\varepsilon })$$ iteration complexity bound, which is the best known complexity result for such methods. The numerical results show that our algorithm is effective and promising.
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