Sampling the posterior density to estimate the CCA reconstruction error

Bedini L., Salerno E.

Physical sciences and engineering  Astrophysical image processing 

In addition to what we have done in [2008-B4-007] and [2009-B4-001], we propose here another strategy to estimate the reconstruction error affecting the harmonic version of CCA. We sample the CCA posterior density by a Metropolis-Hastings algorithm to find the ridge densities for the synchrotron and the dust spectral indices. On this basis, the densities of the individual source cross-spectra components can also be estimated. A Matlab code to sample the spectral indices is included.

Source: ISTI Technical reports, 2009