Talk:Neighbor-joining

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The last sentence of the 2nd paragraph needs to be referenced: Even though it is sub-optimal in this sense, it has been extensively tested and usually finds a tree that is quite close to the optimal tree.

Who tested it?

Yeah, that's a really bad statement. The basic idea is that neighbor-joining assumes rates-across-sites. So if you generate your data under a rates-across-sites model, then you can be fairly sure that you'll get pretty good results. So neighbor-joining is only "suboptimal" in the sense that it requires the rates-across-sites assumption to do well. I'll look for a reference for this. --Wzhao553 20:10, 21 February 2006 (UTC)