| Technique | Performance | |-----------|-------------| | | Retention time ~ 12.3 min on DB‑5; major fragment m/z = 91 (tropylium ion), 149, 197. | | LC‑HRMS (ESI‑+ ) | Accurate mass m/z = 312.1642 ([M+H]⁺); typical product ions: m/z = 197.0915 (pyrrolidine fragment) and 150.0652 (fluorophenyl). | | Immunoassay | No cross‑reactivity with standard drug panels (opioid, amphetamine, cannabinoid). | | Portable Raman | Peaks at 1,025 cm⁻¹ (C‑F stretch) and 1,640 cm⁻¹ (C=C aromatic). |
For physical or digital distributors, it ensures the correct asset is linked to the correct transaction. Metadata Accuracy: JUQ-158
The authors formalize three notions of fairness (demographic parity, equalized odds, and predictive parity) and prove that any non‑trivial classifier that satisfies two of them simultaneously must sacrifice some predictive power unless the underlying data distribution already satisfies certain symmetry properties. They also show that, under a “group‑wise calibrated” assumption, one can achieve a Pareto‑optimal frontier where small fairness gains come at negligible accuracy loss. The paper ends with a “design checklist” for practitioners: (1) Diagnose the data‑generation process, (2) Choose fairness metrics aligned with the decision context, (3) Run a sensitivity analysis on the accuracy–fairness curve. | Technique | Performance | |-----------|-------------| | |
Many of these physical releases have limited runs, making the digital identifier the "gold standard" for collectors trying to find the title on streaming or VOD platforms. | | Portable Raman | Peaks at 1,025
