APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT FOR DISTANCE ESTIMATION BETWEEN SAMPLES

摘要

Apparatus, method, computer program product and computer readable medium are disclosed for distance estimation between samples. The method comprising: modeling the distribution of each of two feature vector sets by a non-parametric model; and calculating the distance of the two distributions, wherein a kernel function is used in the non-parametric model, the kernel function is optimized based on labeled training data, the first feature vector set comprises a plurality of feature vectors extracted from a sample, and the second feature vector set comprises a plurality of feature vectors extracted from another sample.