Using the procedure outlined in West (1992) we sample the concentration parameter of the Dirichlet process. See reference for further details.
UpdateAlpha(dpobj)
# Default S3 method
UpdateAlpha(dpobj)
# S3 method for class 'hierarchical'
UpdateAlpha(dpobj)A Dirichlet process object with updated concentration parameter.
West, M. (1992). Hyperparameter estimation in Dirichlet process mixture models. ISDS Discussion Paper# 92-A03: Duke University.