North America's cannabis sector has enormous scope
Bibliographic record
Abstract
Subject The US cannabis market. Significance The World Health Organisation reports that cannabis is the most widely used psychoactive controlled substance across the world. Indeed, the UN Office on Drugs and Crime estimates that in 2014, 182.5 million working-age people used recreational marijuana. North America is the world's largest market for marijuana, cannabis's smoked herbal form, and legalisation for both medicinal and recreational use is building momentum, rapidly creating a massive new industry. Impacts The share of the global population using cannabis is around 3.8%, translating into a North American market of at least 18 million users. Canada is legalising cannabis next year while 29 US states and the District of Columbia have legalised medical or recreational use. Full US legalisation remains uncertain as the federal prohibition remains in place.
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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 | 0.003 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.005 | 0.003 |
| Scholarly communication | 0.008 | 0.005 |
| Open science | 0.001 | 0.005 |
| Research integrity | 0.006 | 0.005 |
| Insufficient payload (model declined to judge) | 0.118 | 0.026 |
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".