Positioning accuracy and availability analysis of three commercial WADGPS services
Bibliographic record
Abstract
Plusieurs services commerciaux du WADGPS (GPS differentiel a couverture etendue) sont fonctionnels a l'heure actuelle et fournissent des services de correction du DGPS (GPS differentiel) a l'echelle continentale en Amerique du Nord et a travers le monde. Etant donne le vaste choix disponible aux usagers du GPS, on a realise une etude sur le rendement de trois importants services de correction, soit le LANDSTAR, l'OMNISTAR et le SATLOC dans un cadre fonctionnel. Les resultats de cette etude font l'objet du present article. L'analyse comprend une evaluation de l'exactitude du positionnement et, en particulier, de la disponibilite des corrections differentielles pour chaque systeme verifie. On a fait l'etude a Calgary, Les resultats demontrent un niveau comparable d'exactitude du positionnement pour les trois services du WADGPS mais avec des disponibilites de positionnement differentes. Les resultats presentes sont utiles pour les usagers du WADGPS en leur permettant de prendre une decision eclairee dans le choix des divers services disponibles.
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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 | 0.004 |
| 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 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".