Alternative transformations of nitrous oxide soil flux data to normal distributions
Bibliographic record
Abstract
Moulin, A. P., Glenn, A., Tenuta, M., Lobb, D. A., Dunmola, A. S. and Yapa, P. 2014. Alternative transformations of nitrous oxide soil flux data to normal distributions. Can. J. Soil Sci. 94: 105–108. Non-normal distributions of soil N2O fluxes are commonly log transformed prior to statistical analysis. These data are transformed to ensure that analysis of variance and regression based on least squares, meet the assumptions of normality for the distribution of data and equality of variances. Analysis of micrometeorological and static chamber-based fluxes of N2O in Manitoba show that continuous functions such as the Johnson Su and Sl, Generalized Log or normal quantile may be useful as alternatives to the lognormal, which was relatively less effective in transforming data, though each transformation should be evaluated on a case-by-case basis.
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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 | 0.009 | 0.042 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.004 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.006 | 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".