Bibliographic record
Abstract
Abstract Between the American Revolution and the US Civil War, the geography of slavery and freedom in North America changed radically. In some respects, this was an age of emancipation. The northern US, Canada, and Mexico all abolished slavery in this period, and the transatlantic slave trade itself was abolished in 1808. In the southern US, however, slavery underwent an enormous expansion—from the Atlantic seaboard to Texas—mainly as a result of the successful introduction of cotton in the newly acquired lands of the southern interior. In the age of the “second slavery,” southern slavery grew at an unprecedented rate and became characterized by a number of unique features, including a slave population that was almost entirely born in slavery; the development of a massive internal slave trade that wrought havoc on slave communities; the dominance of cotton plantation agriculture in the lives of most enslaved people; the adaptation of slavery to urban settings; the curtailment of manumissions; and the rise of a continent-wide refugee crisis, as freedom seekers fled to parts of the continent where slavery had been abolished. This chapter will explore the institution of slavery in one of its most well-known contexts.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.013 | 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".