# The `--Rao-Blackwellize` command:

--Rao-Blackwellize <parameter>              Rao-Blackwellize a parameter

The idea here is to estimate better expectations for {0,1} parameters
by printing the expected value conditional on the other parameters.
This only works when the parameters is directly modifiable.
(See help for "initial-value").

When Rao-Blackwellizing `<parameter>`, BAli-Phy creates a new
parameter called `RB-<parameter>`.  Each iteration, BAli-Phy
writes out

   log(E/(1-E)),

where E is the expectation of <parameter> conditional on all
the other parameters.

# Examples:

   bali-phy bglobin.fasta --smodel=M8a\_Test[freq\_model=MG94] --Rao-Blackwellize=M8a_Test:posSelection

# See also:

   initial-value
