antecedent-core 0.2.0

Identifiers, schemas, assumptions, provenance, and execution policy shared across the Antecedent causal inference engine; start with the `antecedent` crate
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//! Shared identification status vocabulary.
//!
//! Lives in `antecedent-core` so both `antecedent-identify` and `antecedent-estimate` can
//! reference the same enum without a layering edge estimate → identify
//!
//! SPDX-License-Identifier: MIT OR Apache-2.0

/// Status of an identification attempt.
///
/// [`Self::IdentifiedUnderParametricRestrictions`] and
/// [`Self::IdentifiedUnderPriorRestrictions`] are vocabulary for assumption-restricted
/// identification . They are **not** emitted by current algorithms and must
/// **not** be confused with “Bayesian estimation ran with a prior” — priors alone must not
/// flip [`Self::NotIdentified`] to an identified status. Estimation gates remain
/// nonparametric-only until parametric / prior-restricted ID algorithms ship.
#[derive(Clone, Copy, Debug, Eq, PartialEq, Hash)]
pub enum IdentificationStatus {
    /// Nonparametrically identified.
    NonparametricallyIdentified,
    /// Identified under parametric restrictions on the model class .
    ///
    /// Estimation gates do not yet accept this status; reserved for future ID producers.
    IdentifiedUnderParametricRestrictions,
    /// Identified under prior / substantive restrictions treated as identifying assumptions
    /// . Distinct from attaching a prior to a non-identified estimand.
    ///
    /// Estimation gates do not yet accept this status; reserved for future ID producers.
    IdentifiedUnderPriorRestrictions,
    /// Identified only under a proper subset of the model class (partial ID).
    PartiallyIdentified,
    /// Identification depends on which graph in an equivalence class / ensemble.
    GraphDependent,
    /// Not identified.
    NotIdentified,
}