DATES (Distribution of Ancestry Tracts of Evolutionary Signals) is a method to estimate the time of admixture in ancient DNA samples described in Narasimhan, Patterson et al. 2018.
https://github.com/priyamoorjani/DATES
Essentially, a DATES run is successful "if the (a) Z-score > 2, (b) λ < 200 generations and © NRMSD < 0.7." The lower the nrmsd is (esp. under 0.1) and the higher the Z-score is, the more significant the run is, regardless of the sources' direct relevance. It's a rather sensitive tool so it's rather hard to obtain very good runs.
Date of admixture = (mean ± s.e) * mean generation time (could be from 25 to 30, in many studies taken at 28). This would be taken with the standard errors to create a range.
Below will be successful runs for ancient and modern groups if they are obtained.
https://github.com/priyamoorjani/DATES
Essentially, a DATES run is successful "if the (a) Z-score > 2, (b) λ < 200 generations and © NRMSD < 0.7." The lower the nrmsd is (esp. under 0.1) and the higher the Z-score is, the more significant the run is, regardless of the sources' direct relevance. It's a rather sensitive tool so it's rather hard to obtain very good runs.
Date of admixture = (mean ± s.e) * mean generation time (could be from 25 to 30, in many studies taken at 28). This would be taken with the standard errors to create a range.
Below will be successful runs for ancient and modern groups if they are obtained.
![[Image: U2HgGrg.png]](https://i.imgur.com/U2HgGrg.png)