const COL_NUM_PARTICLES = :num_particles
const COL_NUM_METAINFERENCE = :num_metainference
const COL_PROPOSAL_NAME = :proposal_name
const COL_AIDE_ESTIMATE = :aide_estimate
const COL_AIDE_STDERR = :aide_stderr
const COL_GOLD_STANDARD_NAME = :gold_standard_name
const PRIOR_PROPOSAL_NAME = "prior"
const OPTIMAL_PROPOSAL_NAME = "optimal"
const EXACT_GOLD_STANDARD = "exact"
const APPROXIMATE_GOLD_STANDARD = "approximate"
