An Efficient 2-Parameter Hyperbolic Kernel-Function-based Interior-Point Method for Linear Programming

The aim of this work is to improve the complexity result for the large-update method. First, we present a new 2-parameter kernel function with a hyperbolic barrier term. Then, using simple tools, we show that the complexity bound of the algorithm based on the proposed kernel function for the large-update method is O(n√lnnlnnϵ) iterations. This result matches the best-known iteration bounds for interior-point methods based on all existing types of kernel functions. Finally, to illustrate the effectiveness of the algorithm, we provide numerical tests.