Clever hedge-fund organisers may seed many funds, operate them for a few years, then announce in public only the most successful ones, "backfilling" the performance data from prior periods ie, projecting what the fund might have earned before it existed if it had pursued the same strategy.
"I remember talking to people at the business school," he says, "and being astonished when they'd reach some predetermined conclusion about how decisions are made and then support it by backfilling it with data".
We measure the performance of QLFU and existing replica strategies on a small green cluster to study the running time and power consumption of the strategies with and without data backfilling.
Prior to backfilling, the MODIS data were calibrated against the Landsat data using a linear transformation of reflectance values based on co-occurring Landsat and MODIS pixels (Additional file 1: Table S3).
"We gotta backfill some of the data (easy, but for those who imported their Dodgeball history before Google took the site down, we can give you a good idea of the trends around who you've been hanging out w/ going back to 2003).
These variables were determined using DMDC records and were backfilled with self-reported data to reduce missing values.
The presence/absence of lesions is scored in SIJ quadrants (fat, erosion) or halves (backfill, ankylosis) using a direct online data-entry system based on a schematic of the SIJ.
For both the XRR and GIXD experiments, a custom-built Langmuir trough was enclosed in a hermetically sealed chamber backfilled with helium and translated during data collection to avoid beam damage to the monolayer.
Plausible variations in the backfill geotechnical properties are considered using existing data that were collected from multiple highway bridges in California.
Limit equilibrium method of analysis was adopted for the preliminary design by assuming the interaction of the reinforcement with the backfill material based on the laboratory test data carried out in AIT.
