Louis Kessler’s Behold Blog The Behold User Forum
Blog Comments
192.
Revisiting Speed and Balding - Blog comment by jimbartlett - 6 Nov 2017
Louis, Thank you for this analysis and post - a tremendous service to the genetic genealogy community! We need someone like you with the math skills to help us understand and properly use the Speed and Balding paper. I had reluctantly accepted the way others had interpreted their widely seen Chart. But it just ...
193.
Revisiting Speed and Balding - Blog comment by infodoc - 5 Nov 2017
Louis,
On an intuitive level, your analysis and conclusions have a ring of truth that I have found lacking in Speed and Baldwin. You present a much more encouraging picture for genetic genealogists!
194.
2016 and Looking Forward - Blog comment by acproctor - 18 Oct 2017
Thanks for replying Louis. There is a draft document almost ready for public comment, but not quite. As each of those documents reaches a coherent level then they'll be released for comment, and those titles will be turned into hyperlinks.
195.
2016 and Looking Forward - Blog comment by lkessler - 16 Oct 2017
Hi Tony. I saw that something was done. But I don't see where the Extended Legacy Format document can be looked at. It is listed, but there is no link to it on the drafts page: http://tech.fhiso.org/drafts/
196.
2016 and Looking Forward - Blog comment by acproctor - 13 Oct 2017
I know it's a good while since this post, Louis, but do you think it's worth another look. Admittedly, FHISO has undergone several changes -- including a major team change and the scaling down of the original organisational structure -- but they've since published a new strategy and draft standards for public ...
197.
Deep Ancestors - Blog comment by lkessler - 4 Oct 2017
Joe,
Sorry to take so long to respond. I hadn't seen Steven Fox's spreadsheet before. Couldn't find him or mention of his tool on Google. Finally, I discovered he was part of the Visual Phasing Facebook group. So I requested membership, and Blaine Bettinger, the group coordinator approved me. So finally I ...
198.
Triangulation does NOT mean IBD - Blog comment by lkessler - 4 Oct 2017
Debbie: Well, I'm just looking at the results. And FamilyTreeDNA seems to have many fewer disprovals of IBD by parents at any given cM level than AncestryDNA does.
199.
Triangulation does NOT mean IBD - Blog comment by debbiek - 4 Oct 2017
No I think it means the opposite. FTDNA can't use a higher threshold because they are not using phasing or any algorithms to remove pile-ups. The vast majority of matches that don't match either parent at AncestryDNA share under 9 cMs. Ancestry's own tests published in their white paper show that we would ...
200.
Triangulation does NOT mean IBD - Blog comment by lkessler - 3 Oct 2017
Very interesting, Debbie. So then it seems that FTDNA's criteria of at least one 9 cM segment is better (i.e. produces fewer false matches) than AncestryDNA's combination of phasing and inclusion of segments down to 6 cM. That may be indicative that AncestryDNA's phasing combined with its Timber may not be ...
Revisiting Speed and Balding - Blog comment by dougspeed - 7 Nov 2017