The Viejo Period of Chihuahua Culture in Northwestern Mexico
Bibliographic record
Abstract
Abstract “Chihuahua culture” refers to two prehistoric periods of ceramic agricultural occupation in northwestern Mexico. It has long been known that the Medio period (ca. A.D. 1200–1450), with substantial adobe pueblo villages and towns, and ceramics that included elaborate polychrome wares, occurred over a vast region in western and northern Chihuahua and northeastern Sonora. It was also recognized that the preceding Viejo period, with pithouse and wattle-and-daub surface architecture, and less elaborate ceramics, was ancestral, at least in part. However, the geographical extent, dating, and nature of the Viejo-Medio transition were unclear. Recent research by several field projects has demonstrated that Viejo and Medio period occupations were geographically coextensive, as was the transition. A foundation for Viejo period chronometric dating (ca. A.D. 700–1200) is now established by 30 radiocarbon determinations from excavations in west central Chihuahua and one from northeastern Sonora. We discuss the dimensions of the Viejo period in west central Chihuahua with data from 1998–2000 excavations by the PAC (Proyecto Arqueológico Chihuahua). It provides an example of a broad-based transition from a relatively simple to a relatively complex pattern, and new perspectives on the interpretation of radiocarbon dating.”
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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 | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 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".