Questions on branch length output

[madeleinevlt]

Hello,

I don't really understand when you say in astral tutorial : "Branch lengths are in coalescent units and are a direct measure of the amount of discordance in the gene trees".
Is your branch length in coalescent unit time as described in "Gene tree discordance, phylogenetic inference and the multispecies coalescent", James H.Degnan, 2009 ? If so, how it measure the amount of discordance in the gene trees ?

Any help would be much appreciated :)

Thank you

[smirarab]

Have a look at this paper. If it still didn't make sense, let me know and I will describe it more: https://arxiv.org/abs/1904.03826

…

On Wed, Jun 19, 2019 at 1:58 AM Madeleine De Sousa ***@***.***> wrote: Hello, I don't really understand when you say in astral tutorial : "Branch lengths are in coalescent units and are a direct measure of the amount of discordance in the gene trees". Is your branch length in coalescent unit time as described in "Gene tree discordance, phylogenetic inference and the multispecies coalescent", James H.Degnan, 2009 ? If so, how it measure the amount of discordance in the gene trees ? Any help would be much appreciated :) Thank you — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#51?email_source=notifications&email_token=AAGJXOC2BJNGLPLC35WFYIDP3HYLRA5CNFSM4HZHMFN2YY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4G2K25MQ>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAGJXOGQJGMDDT7ND3R3P33P3HYLRANCNFSM4HZHMFNQ> .

-- Siavash Mirarab

[madeleinevlt]

Thank you, it's all clear now :)