Dear Mike, The catch with ancestry's shared matches list is that they only list of your shared matches above the "4th cousin" level. As example, I have a DNA cousin we'll call Mary. Mary and I share 17.2 cm across 1 segment. Mary and my father also share 17.2 cm across 1 segment. As 17.2 is apparently "distant cousin", the shared matches lists turn up empty. ( Because the second person is my father ancestry does have little icons that point out that Mary is in fact a paternal match, but the shared match would be at least as interesting if the second person were a more distant relative than my father, and without access to their match list and some effort, I'd have no idea that Mary was a shared match. ) Taryn On Tue, Dec 15, 2015 at 5:31 PM, Jim Bartlett via < genealogy-dna@rootsweb.com> wrote: > Mike > > AncestryDNA doesn't say explicitly (that I've seen), how the Shared > Matches are determined, but it appears to be exactly the same as FTDNA ICW. > I've analyzed a bunch of them, and "Shared Matches" is NOT Triangulation. > Like ICW, some SMs will be on the same segment, but without the DNA data, > AncestryDNA's SMs are much less helpful than FTDNA's ICW. There's just not > much we can do with SM info. Maybe try to group them, but still nothing > helpful as far as atDNA is concerned. A few people may find some genealogy > groups, but those may or may not involve DNA. > > Jim - www.segmentology.org > > > On Dec 15, 2015, at 11:57 AM, Michael Fisher <m.j.fisher@btinternet.com> > wrote: > > > > Jim > > > > How does this compare to AncestryDNA "shared matches" that DNAgedcom > downloads as ICW ? > > (all my AncestryDNA kit have been imported into FTDNA and GEDMatch) > > > > Mike in a very damp Droitwich, England > > > >> On 15/12/2015 16:00, Jim Bartlett via wrote: > >> Jim > >> > >> The ICW algorithm does not include arDNA. It does not include > genealogy. It only matches names between your Match list and someone else's > Match list. > >> > >> Jim - www.segmentology.org > > > > > ------------------------------- > To unsubscribe from the list, please send an email to > GENEALOGY-DNA-request@rootsweb.com with the word 'unsubscribe' without > the quotes in the subject and the body of the message >
Taryn I think you mean that AncestryDNA only names 4th cousins and below as Shared Matches. Theoretically this applies to all of your Matches, but I've noticed many Matches don't have an SM link. And some Matches (even close ones) will not have any SMs. Jim - www.segmentology.org > On Dec 15, 2015, at 1:21 PM, Taryn Flock via <genealogy-dna@rootsweb.com> wrote: > > Dear Mike, > > The catch with ancestry's shared matches list is that they only list of > your shared matches above the "4th cousin" level. > > As example, I have a DNA cousin we'll call Mary. Mary and I share 17.2 cm > across 1 segment. Mary and my father also share 17.2 cm across 1 segment. > As 17.2 is apparently "distant cousin", the shared matches lists turn up > empty. > > ( Because the second person is my father ancestry does have little icons > that point out that Mary is in fact a paternal match, but the shared match > would be at least as interesting if the second person were a more distant > relative than my father, and without access to their match list and some > effort, I'd have no idea that Mary was a shared match. ) > > Taryn > > On Tue, Dec 15, 2015 at 5:31 PM, Jim Bartlett via < > genealogy-dna@rootsweb.com> wrote: > >> Mike >> >> AncestryDNA doesn't say explicitly (that I've seen), how the Shared >> Matches are determined, but it appears to be exactly the same as FTDNA ICW. >> I've analyzed a bunch of them, and "Shared Matches" is NOT Triangulation. >> Like ICW, some SMs will be on the same segment, but without the DNA data, >> AncestryDNA's SMs are much less helpful than FTDNA's ICW. There's just not >> much we can do with SM info. Maybe try to group them, but still nothing >> helpful as far as atDNA is concerned. A few people may find some genealogy >> groups, but those may or may not involve DNA. >> >> Jim - www.segmentology.org