added comments and a relaxatio of the HI -> tree map to avoid shortening of dHI terms due to the regularization.
added comments and a relaxatio of the HI -> tree map to avoid shortening
of dHI terms due to the regularization.

blab/stability,blab/nextflu,blab/nextflu,blab/nextflu,blab/nextflu,blab/nextflu,blab/stability,blab/stability,blab/stability,blab/stability,blab/stability