# Average-Case Complexity of the Min-Sum Matrix Product Problem

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

## Author(s)

## Related Research Unit(s)

## Detail(s)

Original language | English |
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Title of host publication | Algorithms and Computation |

Editors | Hee-Kap Ahn, Chan-Su Shin |

Publisher | Springer |

Pages | 41-52 |

ISBN (Electronic) | 9783319130750 |

ISBN (Print) | 9783319130743 |

Publication status | Published - Dec 2014 |

### Publication series

Name | Lecture Notes in Computer Science |
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Volume | 8889 |

ISSN (Print) | 0302-9743 |

ISSN (Electronic) | 1611-3349 |

### Conference

Title | 25th International Symposium on Algorithms and Computation (ISAAC 2014) |
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Location | |

Place | Korea, Republic of |

City | Jeonju |

Period | 15 - 17 December 2014 |

## Link(s)

## Abstract

We study the average-case complexity of min-sum product of matrices, which is a fundamental operation that has many applications in computer science. We focus on optimizing the number of “algebraic” operations (i.e., operations involving real numbers) used in the computation, since such operations are usually expensive in various environments. We present an algorithm that can compute the min-sum product of two

*n*×*n*real matrices using only*O*(*n*^{2}) algebraic operations, given that the matrix elements are drawn independently and identically from some fixed probability distribution satisfying several constraints. This improves the previously best known upper-bound of*O*(*n*^{2}log*n*). The class of probability distributions under which our algorithm works include many important and commonly used distributions, such as uniform distributions, exponential distributions, and folded normal distributions. In order to evaluate the performance of the proposed algorithm, we performed experiments to compare the running time of the proposed algorithm with algorithms in[7]. The experimental results demonstrate that our algorithm achieves significant performance improvement over the previous algorithms.## Citation Format(s)

**Average-Case Complexity of the Min-Sum Matrix Product Problem.**/ Fong, Ken; Li, Minming; Liang, Hongyu et al.

Algorithms and Computation. ed. / Hee-Kap Ahn; Chan-Su Shin. Springer, 2014. p. 41-52 (Lecture Notes in Computer Science; Vol. 8889).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review