We devised a Local Anomaly Descriptor (LAD) that faithfully reveals the
intrinsic neighborhood density to detect anomalies. LAD bridges global and
local properties, which makes it self-adaptive with different samples’ neighborhood.
To offer better stability of local density measurement on scaling
parameter tuning, we formulated a Fermi Density Descriptor (FDD). FDD
steadily distinguishes anomalies from normal instances with most of the
scaling parameter settings. We also quantified and examined the effect of
different Laplacian normalizations with the purpose of detecting anomalies