Urban decay: a case study of the negatives in the Toronto Telegram fonds, Clara Thomas Archives and Special Collections
Bibliographic record
Abstract
The negatives in the Toronto Telegram fonds (1876-1971), at the Clara Thomas Archives and Special Collections at York University, in Toronto, Canada are representative of eras in history and are of great historical, geographic and intrinsic value. The declining condition of the negatives is of significant concern for the longevity of these photographic artifacts. The fundamental value this fonds has to support research and teaching at the Clara Thomas Archives and Special Collections, York University Library and York University must be recognized. My research concentrates on the 830,000 negatives, which include glass plate, cellulose nitrate, and cellulose acetate materials, all suffering from minor to severe forms of chemical and physical degradation. Vinegar syndrome is a major problem; the consequences of which are permanently deformed cellulose acetate negatives. This case study investigates the deteriorating condition of each type of negative within this fonds, and suggests appropriate measures for decelerating degradation.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.004 |
| Science and technology studies | 0.012 | 0.006 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 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".