by Guest Blogger, Angie Bush, NGS Director and the head of the NGS Genetic Genealogy Committee
A new matching algorithm was implemented by AncestryDNA on May 3rd. Some DNA matches were lost while others were gained. At the end of it all, the goal is to improve the quality of the matches at AncestryDNA so that we are working with those genetic cousins who are most likely to help us break down brick walls and open new avenues of research. All DNA testing companies are working to improve the results that they deliver to their customers, and matches and ethnicity results can and should change over time as these improvements are made.
A new matching algorithm was implemented by AncestryDNA on May 3rd. Some DNA matches were lost while others were gained. At the end of it all, the goal is to improve the quality of the matches at AncestryDNA so that we are working with those genetic cousins who are most likely to help us break down brick walls and open new avenues of research. All DNA testing companies are working to improve the results that they deliver to their customers, and matches and ethnicity results can and should change over time as these improvements are made.
Ancestry has published several new articles and a significant revision to their matching "white paper" in conjunction with this update. Details can be found here:
- AncestryDNA Matching White Paper
- The Science Behind A More Precise DNA Matching Algorithm
- Some AncestryDNA Q&A on the recent changes
Well-respected genealogists Debbie Kennett and Diahan Southard have both published their thoughts as well.
If you have questions about your matches and the changes to your DNA accounts, please be sure to read the posts linked above. We also encourage you to provide feedback to AncestryDNA so that they can continue to work to improve their algorithms.
Editor’s Note: This is the guest post referenced in the recent blog post, Things are a Changin' -- AncestryDNA Will Be Updating Its Matching Algorithm
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