Dan Gusfield
ABSTRACT
The Persistent-Phylogeny Model is an extension of the widely studied Perfect-Phylogeny Model, encompassing a broader range of evolutionary phenomena. Biological and algorithmic questions concerning persistent phylogeny have been intensely investigated in recent years. In this paper, we explore two alternative approaches to the persistent-phylogeny problem that grow out of our previous work on perfect phylogeny, and on galled trees. We develop an integer programming solution to the Persistent-Phylogeny Problem; empirically explore its efficiency; and empirically explore the utility of using fast algorithms that recognize galled trees, to recognize persistent phylogeny. The empirical results identify parameter ranges where persistent phylogeny are galled trees with high frequency, and show that the integer programming approach can efficiently identify persistent phylogeny of much larger size than has been previously reported.
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Digital Library
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Index Terms
- Persistent phylogeny: a galled-tree and integer linear programming approach
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