Neolithic genomes reveal long distance interactions in agropastoral border zone of Yan Mountain Region
Bibliographic record
Abstract
The Yan Mountain Region (YMR), a transition zone between the Mongolian Plateau and northern China, played a pivotal yet understudied role in shaping the prehistoric East Asian genetic and cultural landscapes. Analyzing 42 ancient genomes (7700-4300 before present (BP)), focusing on the Early Neolithic Sitaimengguying (STM_EN) and Late Neolithic Jiangjialiang (JJL_LN) sites, we reveal the fine-scaled population history of the Neolithic YMR. We genetically link Early Neolithic YMR groups (Yumin and STM_EN) to the Early Neolithic Lake Baikal groups, in line with similar burial practices in the Lake Baikal region. JJL_LN individuals who belonged to the Late Neolithic Xiaoheyan culture were genetically heterogeneous reflecting an admixture between STM_EN-related groups and Yellow River farmers, and filled in an ancient genome sampling gap between the Hongshan and Lower Xiajiadian cultures. This study consolidates the idea of pre-pastoralist contact between the Eurasian steppe and northern Chinese agricultural societies and highlights the YMR as a key interaction sphere between the Yellow and West Liao River regions.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".