Outlier detection equipment, outlier detection method, program and vehicle fault diagnosis system

摘要

The present invention provides an outlier detecting apparatus and the like that assist or execute detection of an outlier within a practical time without performing a parameter tuning operation for a nonlinear data set. An outlier detecting apparatus (1) converts each of a plurality of pieces of data included in a data set for each dimension, and establishes an observation region for the data set on the basis of the bit sequence. Then, the outlier detecting apparatus (1) determines a piece of target data one by one from the plurality of pieces of data included in the data set, and calculates the degree of deviation of the piece of target data on the basis of data densities of data adjacent to the piece of target data when a region corresponding to the piece of target data is removed from the observation region.