Science response: Scotian Shelf 4VWX silver hake update
Bibliographic record
Abstract
Advice on the status of the Scotian Shelf portion of the Silver Hake (Merluccius bilinearis) stock in Northwest Atlantic Fisheries Organization (NAFO) Divisions 4VWX is requested annually by Fisheries and Oceans Canada (DFO) Resource Management to determine a Total Allowable Catch (TAC) consistent with the Integrated Fishery Management Plan (IFMP). The most recent framework and assessment of Silver Hake were conducted in 2012 (Cook 2013, Stone et al. 2013, DFO 2013). An analytical reconstruction of population trends based on commercial landings and Research Vessel (RV) survey data from 1993–2011 was developed through the framework process, using a logistic biomass dynamics model. The 2013 Framework also defined the Upper Stock Reference (USR) as 80% of Biomass at Maximum Sustainable Yield (BMSY), the Limit Reference Point (LRP) was defined as 40% BMSY and Fishing mortality at Maximum Sustainable Yield (FMSY) was established as the Limit Removal Reference (RR) based on the median estimates of r and K (DFO 2013). The consequences and risk to productivity of the stock were evaluated under a number of harvest options (DFO 2013). Since the 2012 framework assessment, science advice has been provided annually as a stock status update and published as a Science Response. The objective of the interim update is to report new information from the DFO Summer RV Survey and commercial landings data. Recent trends in biomass and fishing mortality are evaluated against the values for BMSY and FMSY derived in the framework assessment. The most recent update occurred in December 2019 (DFO 2020). This Science Response Report results from the regional peer review of December 6–7, 2022 on the Stock Status Update of Silver Hake in 4VWX.
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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 | 0.013 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.006 | 0.004 |
| Insufficient payload (model declined to judge) | 0.054 | 0.021 |
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".