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 >

I have found the Ancestry shared matches useful in so far as I have created a matrix of who shares with who and that can be instructive but without the ability to see the actual shared segments it is not really useful Jon Masterson Wales UK, Florida US jon@scruffyduck.co.uk Gedmatch: A488362, M938817 Surnames: Cannon, Coulter, Clinton, Dryman, Lance, Mabey, Pryor, Wrixon Locations: England, Illinois, Kentucky, Texas, Utah, Virginia On 15/12/2015 17:31, Jim Bartlett via 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