Fixed Parameter Set Splitting, Linear Kernel and Improved Running Time

نویسندگان

  • Daniel Lokshtanov
  • Christian Sloper
چکیده

We study the problem k-Set Splitting in fixed parameter complexity. We show that the problem can be solved in time O∗(2.6494k), improving on the best currently known running time of O∗(8k). This is done by showing that a non-trivial instance must have a small minimal Set Cover, and using this to reduce the problem to a series of small instances of Max Sat. We also give a linear kernel containing 2k elements and 2k sets. This is done by reducing the problem to a bipartite graph problem where we use crown decomposition to reduce the graph. We show that this result also gives a good kernel for Max Cut.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Fixed Parameter Set Splitting , Obtaining a Linear Kernel and Improving Running Time

We study the problem k-SET SPLITTING from a Fixed Parameter point of view. We give a linear kernel of 2k elements and 2k sets and improve on the current best running time for the problem, giving a O∗(4k) algorithm. This is done by reducing the problem to a bipartite graph problem where we use crown decomposition to reduce the graph. We show that this result also gives a good kernel for Max Cut.

متن کامل

F IXED P ARAMETER S ET S PLITTING Fixed Parameter Set Splitting , Linear Kernel and Improved Running Time 1

We study the problem k-SET SPLITTING in fixed parameter complexity. We show that the problem can be solved in time O∗(2.6494k), improving on the best currently known running time of O∗(8k). This is done by showing that a non-trivial instance must have a small minimal SET COVER, and using this to reduce the problem to a series of small instances of MAX SAT. We also give a linear kernel containin...

متن کامل

Even Faster Algorithm for Set Splitting!

In the p-Set Splitting problem we are given a universe U , a family F of subsets of U and a positive integer k and the objective is to find a partition of U into W and B such that there are at least k sets in F that have non-empty intersection with both B and W . In this paper we study p-Set Splitting from the view point of kernelization and parameterized algorithms. Given an instance (U,F , k)...

متن کامل

Graph-Modeled Data Clustering

ly speaking, what have we done in the previous section? After applying a number of rules in polynomial time to an instance of VERTEX COVER, we arrived at a reduced instance whose size can solely be expressed in terms of the parameter k. Since this can be easily done in O(n) time, we have found a data reduction for VERTEX COVER with guarantees concerning its running time as well as its effective...

متن کامل

On the Parameterized Complexity of Biclique Cover and Partition

Given a bipartite graph G, we consider the decision problem called BicliqueCover for a fixed positive integer parameter k where we are asked whether the edges of G can be covered with at most k complete bipartite subgraphs (a.k.a. bicliques). In the BicliquePartition problem, we have the additional constraint that each edge should appear in exactly one of the k bicliques. These problems are bot...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2005