Method and device for determining feature distance and server

The invention provides a method and device for determining feature distance and a server. When a feature distance of a target data object relative to a first object group needs to be determined cooperatively, a first server uses a first target feature column of the target data object constructed based on a feature value of a first type of features of the held target data object and a feature mean value of the first type of features of the first object group, first interaction is made with a second server to obtain different fragments of the target feature column of the target data object; the first server carries out operation of a preset feature distance function with a second server according to a preset protocol rule by using a first fragment of a target feature column of the target data object and a first fragment of an inverse of a covariance matrix of features of the first object group; and different fragments of the feature distance of the target data object are acquired relative to the first object gr