run_config and estimate_config are collections of
parameters that control the run() and estimate() method,
respectively. In addition to the mentioned entries ``compute_capacity_flag'',
``capacity_string'' and ``correct_sampling_bias'', they can contain entries
``sample_proportion_locations'' and ``sample_size_locations''. Both entries
control the size of sampled alternatives, the first one as a relative number,
the latter one as an absolute number. The latter one has a priority over the
first one.
As mentioned above, estimate_config can also contain an entry ``weights_for_estimation_string''.