Cross covariance matrix matlab

1. What is Xcov in Matlab?
2. What is auto cross-covariance?
3. Is cross-covariance symmetric?

What is Xcov in Matlab?

Cross-Covariance and Autocovariance

xcov computes the mean of its inputs, subtracts the mean, and then calls xcorr . The result of xcov can be interpreted as an estimate of the covariance between two random sequences or as the deterministic covariance between two deterministic signals.

What is auto cross-covariance?

Here, the autocross covariance (ACC) transformation is introduced to transform protein sequences into fixed-length vectors. As a statistical tool for analyzing sequences of vectors developed by Wold et al.

Is cross-covariance symmetric?

Note that, in general, the cross-covariance is not symmetric.