MyHeritage tells me a “DNA cousin” shares with me, say, 3 HIRs totaling 54 cM, and it tells me the longest one is, say, 29 cM. I think “ooh, great! That’s a (moderately) substantive match!” But then this DNA cousin copies to GEDmatch, and the only HIR which shows up at a >5cM threshold is the one, for 29 cM. Okay, I’m not going to discard this match, but it’s not a 54cM/3HIR match. Does anyone know what formula/threshold/algorithm is being used to come up with these “3 HIRs / 54 cM”? Yes, I know MyHeritage has had problems with false positives, but … this is a little ridiculous … Best, Eric <https://keyserver.pgp.com/vkd/DownloadKey.event?keyid=0xE0F58E0F1AF7E6F2> OpenPGP: 0x1AF7E6F2 ● Skype: oneota ● XMPP/OTR: <mailto:[email protected]> [email protected] ● Silent Circle: +1 312 614-0159
Hi Eric, Well, you have to look what is compared, in all fairness. If it's a v2 23andMe you compare with an Ancestry or ftdna test at Gedmatch you won't get all matching segments due to the little overlapping markers. If MyHeritage compares two tests from their own testing chip then they should indeed have no problem identifying correct segments. But you are not the first one reporting such fishy results from MyHeritage. Andreas > On 28 Aug 2017, at 15:35, Eric S Johnson <[email protected]> wrote: > > MyHeritage tells me a “DNA cousin” shares with me, say, 3 HIRs totaling 54 > cM, and it tells me the longest one is, say, 29 cM. > > > > I think “ooh, great! That’s a (moderately) substantive match!” > > > > But then this DNA cousin copies to GEDmatch, and the only HIR which shows up > at a >5cM threshold is the one, for 29 cM. Okay, I’m not going to discard > this match, but it’s not a 54cM/3HIR match. > > Does anyone know what formula/threshold/algorithm is being > used to come up with these “3 HIRs / 54 cM”? > > > > Yes, I know MyHeritage has had problems with false positives, but … this is > a little ridiculous … > > > > Best, > > Eric > > <https://keyserver.pgp.com/vkd/DownloadKey.event?keyid=0xE0F58E0F1AF7E6F2> > OpenPGP: 0x1AF7E6F2 ● Skype: oneota ● XMPP/OTR: > <mailto:[email protected]> [email protected] ● Silent Circle: +1 > 312 614-0159 > > > > > ------------------------------- > To unsubscribe from the list, please send an email to [email protected] with the word 'unsubscribe' without the quotes in the subject and the body of the message