Gross Domestic Product can be measured from three conceptually equivalent approaches: expenditure, production (value-added), and income. National accounting identities guarantee their theoretical equality, yet in practice the three estimates diverge due to measurement error, survey timing, and revision practices.
Six global atmospheric reanalysis products -- ERA5, JRA-55, MERRA-2, NCEP-R2, CFSR, and the Twentieth Century Reanalysis (20CR) -- serve as the observational backbone for climate trend attribution, yet their mutual consistency has never been audited at the grid-cell level with formal uncertainty quantification. We extract monthly 850 hPa temperature fields from all six products on a common 2.
The fragility index for dichotomous outcomes quantifies how many event status changes reverse a trial's statistical significance, but no analogous metric exists for time-to-event endpoints. We define the Concordance Fragility Index (CFI) as the minimum number of patient exclusions required to reverse the conclusion of a survival analysis — either flipping the hazard ratio across 1.
Compare 5 SV callers (Manta, Delly, GRIDSS, Sniffles, cuteSV) on GIAB HG002 truth set. Insertions >1kb: pairwise concordance 38-47%.