Polynomial kernels collapse the W-hierarchy

Liang Ding; Abdul Samad; Xingran Xue; Xiuzhen Huang; Liming Cai

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arXiv · 1308.3613

Polynomial kernels collapse the W-hierarchy

Liang Ding·Abdul Samad·Xingran Xue·Xiuzhen Huang·Liming Cai

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Abstract

We prove that, for many parameterized problems in the class FPT, the existence of polynomial kernels implies the collapse of the W-hierarchy (i.e., W[P] = FPT). The collapsing results are also extended to assumed exponential kernels for problems in the class FPT. In particular, we establish a close relationship between polynomial (and exponential) kernelizability and the existence of sub-exponential time algorithms for a spectrum of circuit satisfiability problems in FPT. To the best of our knowledge, this is the first work that connects hardness for polynomial kernelizability of FPT problems to parameterized intractability. Our work also offers some new insights into the class FPT.

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BibTeX RIS

Liang Ding, Abdul Samad, Xingran Xue, Xiuzhen Huang, Liming Cai. 2013-08-15. Polynomial kernels collapse the W-hierarchy. https://arxiv.org/abs/1308.3613

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