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http://hdl.handle.net/10119/15359
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Title: | Sliding tokens on block graphs |
Authors: | Hoang, Duc A. Fox-Epstein, Eli Uehara, Ryuhei |
Keywords: | reconfiguration problem sliding token problem block graph independent set |
Issue Date: | 2017-02-21 |
Publisher: | Springer |
Magazine name: | Lecture Notes in Computer Science |
Volume: | 10167 |
Start page: | 460 |
End page: | 471 |
DOI: | 10.1007/978-3-319-53925-6_36 |
Abstract: | Let I, J be two given independent sets of a graph G. Imagine that the vertices of an independent set are viewed as tokens (coins). A token is allowed to move (or slide) from one vertex to one of its neighbors. The Sliding Token problem asks whether there exists a sequence of independent sets of G starting from I and ending with J such that each intermediate member of the sequence is obtained from the previous one by moving a token according to the allowed rule. In this paper, we claim that this problem is solvable in polynomial time when the input graph is a block graph—a graph whose blocks are cliques. Our algorithm is developed based on the characterization of a non-trivial structure that, in certain conditions, can be used to indicate a no-instance of the problem. Without such a structure, a sequence of token slidings between any two independent sets exists. |
Rights: | This is the author-created version of Springer, Duc A. Hoang, Eli Fox-Epstein and Ryuhei Uehara, Lecture Notes in Computer Science, 10167, 2017, 460-471. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/978-3-319-53925-6_36 |
URI: | http://hdl.handle.net/10119/15359 |
Material Type: | author |
Appears in Collections: | b10-1. 雑誌掲載論文 (Journal Articles)
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