Study on Technological Process of the Shell Ornaments Discovered from the Shizitan Palaeolithic Site
Bibliographic record
Abstract
This paper reports a preliminary study on technological process of making shell ornaments that were discovered from Shizitan,a microblade-industry Palaeolithic site complex in southwestern Shanxi,dated to 25000-10000 BP.Five finished shell ornaments and 3 by-products were identified from cultural layers at different locations of the sites.Based on perforating techniques,these shell ornaments are classified into drilled-perforation type and grounding-peroration type.Subsequently three methods of manufacturing processes are identified.The perforations seem to be larger in earlier period than in later period,reflecting the plausible changes of drilling techniques and possible different function over time.Also changes in morphological shapes of shell artifacts from flaked edges to polished edges were possibly in coincidence with changes in use of drilling tools that were employed by flaked tools in the early period and by microblade tools in the late period,possibly suggesting a specialization of ornament production.
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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 | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| 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".