Free Access

Fig. 6


Artificial data sample with six clusters (top) and the matrix of pairwise Euclidean distances (bottom). Each cluster has an underlying bivariate Gaussian distribution with covariance matrix Σ = diag(1,1). We sampled 50 data points from each cluster.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.