Piya Changmai

Sparse or clustered sampling plus rare-variant filtering collapse PCA plots into triangles and three-ray patterns; objective-guided manifold learning on high-dimensional classic PC scores recovers obscured structure.

This study evaluates qpAdm's performance on complex admixture histories and stepping-stone landscapes, finding high false discovery rates and suggesting protocol improvements.

This paper uses ancient DNA data to trace the genetic origins of the Yamnaya culture and links their expansion to the spread of Indo-European languages.

This paper shows that f-statistics can be biased when using non-outgroup SNP ascertainment schemes and proposes a pan-African ascertainment approach to reduce bias in population history inference.

The paper reports South Asian admixture in an ancient Cambodian individual from the 1st-3rd centuries CE, indicating earlier gene flow than previously detected using present-day populations.

This study identifies heme-deficient metabolism and impaired cellular differentiation as evolutionary trade-offs for human infectivity in Trypanosoma brucei gambiense due to HpHbR inactivation.

This study re-analyzes genetic data from Thailand to challenge previous conclusions about the genetic continuity between Kra-Dai speakers and Austroasiatic populations, revealing a more complex genetic history.

The paper analyzes genetic data from Southeast Asian populations to identify Indian genetic heritage and its impact on local populations.

The paper uses lexical and genomic data to show evidence of language and genetic relationships among circumpolar language families, with significant signals for Chukotko-Kamchatkan-Nivkh and Yukaghir-Samoyedic connections.

The paper shows Ancient Beringians have admixture from Amur River Basin populations and are not the deepest American lineage.

The paper analyzes ancient DNA from Southeast Asia to show multiple waves of migration, including an initial spread of Austroasiatic languages and a later influx linked to Bronze Age populations.

The paper analyzes maternal and paternal genetic variation in Thai hunter-gatherer groups, finding distinct haplogroup patterns and suggesting a recent origin for the Mlabri population.

The paper analyzes ancient and present-day genome-wide data to show widespread Paleo-Eskimo ancestry among Na-Dene and Eskimo-Aleut language speakers and presents a model for North America's peopling.

The paper analyzes the genetic relationships of the Ket people with Siberian and North American populations, finding strong ties to Paleo-Eskimo ancestry and shared ancestry with other groups.