Patent ID: 11914622
Assignee: SAP SE
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. The one or more computer-readable storage media of claim 14, wherein the operations further comprise:
generating a set of candidate factors from root factors by:
initializing the set of candidate factors; and
for each tuple size TS of a plurality of tuple sizes:
generating a plurality of tuples of the root factors, each of the generated tuples having size equal to TS; and
adding the generated tuples to the set of candidate factors; and

extracting the sample of records from the population of records by:
combining the root factors into a joint factor;
evaluating values of the joint factor for the population of records; and
generating the sample of records by stratified sampling of the population of records according to the values of the joint factor.