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Tree reconciliations: beyond the LCA mapping

Date: 
Thursday 23rd June 2011 - 10:40 to 11:00
Venue: 
INI Seminar Room 1
Abstract: 
The least common ancestor (LCA) mapping is an important tool to reconcile discordance between gene tree and species tree, and has been well studied in the literature. In this talk, we report some recent results in studying general reconciliations, i.e., leaf-preserving and order-preserving maps, between gene tree and species tree. Here we introduce three cost models to infer, respectively, the gene duplication, gene loss and deep coalescent events. And we also show that the canonical partial order dened on the set of reconciliations is compatible with these cost models. Finally, we discuss how to generalize these results to non-binary gene trees.
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Presentation Material: 
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons