the eigenvalue spectrum of Cˆin terms of its resolvent leads to a partition function very similar to that used in the study of the unsupervised learning performance of PCA, and there-fore suggests using replicas to derive the eigenvalue spec-trum of Cˆ. The trace of the resolvent, G(l), of the matrix Cˆ is defined as tr G~l!5(i51 N 1 l2li, ~7!. "/> centurion facebook cosmos db parameterized query c