Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: In recent years, the parameterized complexity approach has lead to the introduction of many new algorithms and frameworks on graphs and digraphs of bounded clique-width and, equivalently, rank-width. Hover, despite intensive work on the subject, there still exist ll-established hard problems where neither a parameterized algorithm nor a theoretical obstacle to its existence are known. Our article is interested mainly in the digraph case, targeting the ll-known Minimum Leaf Out-Branching (cf. also Minimum Leaf Spanning Tree) and Edge Disjoint Paths problems on digraphs of bounded clique-width with non-standard new approaches. The first part of the article deals with the Minimum Leaf Out-Branching problem and introduces a novel XP-time algorithm wrt. clique-width.  remark that this problem is known to be W[2]-hard, and that our algorithm does not resemble any of the previously published attempts solving special cases of it such as the Hamiltonian Path. The second part then looks at the Edge Disjoint Paths problem (both on graphs and digraphs) from a dierent perspective ‐ rather surprisingly showing that this problem has a definition in the MSO1 logic of graphs. The linear-time FPT algorithm wrt. clique-width then follows as a direct consequence. 1998 ACM Subject Classification F.2.2 Nonnumerical Algorithms and Problems
['Robert Ganian', 'Petr Hlineny', 'Jan Obdrzalek']
I am writing a research paper on a idea Clique-width: When Hard Does Not Mean Impossible
[{"from": "human", "value": "I am writing a research paper on a idea Clique-width: When Hard Does Not Mean Impossible"}, {"from": "gpt", "value": "Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: In recent years, the parameterized complexity approach has lead to the introduction of many new algorithms and frameworks on graphs and digraphs of bounded clique-width and, equivalently, rank-width. Hover, despite intensive work on the subject, there still exist ll-established hard problems where neither a parameterized algorithm nor a theoretical obstacle to its existence are known. Our article is interested mainly in the digraph case, targeting the ll-known Minimum Leaf Out-Branching (cf. also Minimum Leaf Spanning Tree) and Edge Disjoint Paths problems on digraphs of bounded clique-width with non-standard new approaches. The first part of the article deals with the Minimum Leaf Out-Branching problem and introduces a novel XP-time algorithm wrt. clique-width.  remark that this problem is known to be W[2]-hard, and that our algorithm does not resemble any of the previously published attempts solving special cases of it such as the Hamiltonian Path. The second part then looks at the Edge Disjoint Paths problem (both on graphs and digraphs) from a dierent perspective \u2010 rather surprisingly showing that this problem has a definition in the MSO1 logic of graphs. The linear-time FPT algorithm wrt. clique-width then follows as a direct consequence. 1998 ACM Subject Classification F.2.2 Nonnumerical Algorithms and Problems"}]