The PPNB chipped stone industries from Kharaysin (Zarqa Walley, Jordan): preliminary insights
Bibliographic record
Abstract
The preliminary study of the Pre-Pottery Neolithic B (PPNB) chipped stone industries from Kharaysin (Zarqa Valley, North Jordan) sheds light on key aspects of lithic production during a period, the second half of the 9th millennium and the first quarter of the 8th millennium cal. BC, that remains poorly understood in the Southern Levant. The results help to fine-tune previous knowledge about the early stages of bidirectional blade technology (BBT) in the Southern Levant; a technology that constitutes one of the most, if not the most, significant and diagnostic elements of PPNB material culture records throughout the Levant and beyond (Cappadocia and Cyprus). In this sense, preliminary analysis indicates that BBT (‘predetermined-upsilon’ variant) was the main reduction sequence used for lithic production at PPNB Kharaysin, and high-quality flint types similar to the Huweijir-type flint were extensively used for that purpose. It has also been observed that different variants of core configuration and initial block management co-existed at the site, and that Jericho points and large sickle elements were the most common formal tools produced.
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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 | 0.003 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.007 | 0.001 |
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".