Search Results for author: Yoichi Iwata

Found 3 papers, 3 papers with code

Improved Analysis of Highest-Degree Branching for Feedback Vertex Set

1 code implementation29 May 2019 Yoichi Iwata, Yusuke Kobayashi

Recent empirical evaluations of exact algorithms for Feedback Vertex Set have demonstrated the efficiency of a highest-degree branching algorithm with a degree-based pruning heuristic.

Data Structures and Algorithms

Linear-time Kernelization for Feedback Vertex Set

2 code implementations4 Aug 2016 Yoichi Iwata

This is the first linear-time polynomial-size kernel for Feedback Vertex Set.

Data Structures and Algorithms

Half-integrality, LP-branching and FPT Algorithms

2 code implementations10 Oct 2013 Yoichi Iwata, Magnus Wahlström, Yuichi Yoshida

In addition to the insight into problems with half-integral relaxations, our results yield a range of new and improved FPT algorithms, including an $O^*(|\Sigma|^{2k})$-time algorithm for node-deletion Unique Label Cover with label set $\Sigma$ and an $O^*(4^k)$-time algorithm for Group Feedback Vertex Set, including the setting where the group is only given by oracle access.

Data Structures and Algorithms

Cannot find the paper you are looking for? You can Submit a new open access paper.