Transformaciones en el sistema alimentario y cambios de dieta en España durante el siglo XX
Bibliographic record
Abstract
This article reflects on how changes in the Spanish food system have been instrumental in changing the availability and consumption of foods in the twentieth century. We designed several stages in the study and examined several sectors that have experienced major changes. The first stage refers to the first decades of the twentieth century, prior to the Spanish Civil War, and immediately after the war; the second spans from the early fifties to the beginning of the seventies; and the third go from then until the end of the century. Throughout the first three quarters of the century there were major innovations in agriculture and industry, in contrast to a very poor traditional retail distribution system. In the fourth sections of the article, major changes that occurred during the last quarter of the century in food distribution and growing control over the food chain are analyzed in relation to the rapid expansion and increasing concentration of large-scale retail distribution. These changes affected traditional buying habits and consumption, shifting food expenditures towards higher-quality, healthier, processed and personalized goods; as well as increasing food consumption outside the home.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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".