natural experiment
empirical study in which individuals/clusters exposed to the experimental and control conditions are determined by factors outside the control of the investigators (nature), but the process governing the exposures arguably resembles random assignment
regression discontinuity design
statistical method
Proof-of-authority
is an algorithm used with blockchains that delivers comparatively fast transactions through a consensus mechanism based on identity as a stake
difference in differences
social sciences statistical technique that mimics an experimental research design using observational study data by studying the differential effect of a treatment on a 'treatment group' versus a 'control group' in a natural experiment