Héliogravures : the unpublished photogravure process of Édouard Baldus
Bibliographic record
Abstract
This thesis project uses an incomplete set of twenty six héliogravure prints by Édouard Baldus (1813-1889) from the publication "Les Principaux Monument de la France, reproduit en héliogravure par E. Baldus 1869-70", which are held at the Art Gallery of Ontario. The prints are utilized as a primary means of analysis in an attempt to understand Baldus' working method, as he never published his photogravure process, and about which little is known. The thesis is composed of five sections: 1) a discussion of Baldus' place in photographic history; 2) an examination of the compete set of forty five héliogravures in the publication based on the copy at the Canadian Centre for Architecture; 3) a case study looking at the relationship between Baldus' albumen prints and his héliogravures; 4) a second case study analyzing and comparing the physical nature of the photogravure works of William Henry Fox Talbot, Charles Nègre, Peter Henry Emerson and Alfred Steiglitz; with the intension of, 5) deciphering the method Baldus could have used in printing his héliogravures.
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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 | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.009 | 0.007 |
| Scholarly communication | 0.004 | 0.002 |
| Open science | 0.000 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.023 | 0.002 |
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".