ternlang-core 0.3.3

Compiler and VM for Ternlang — balanced ternary language with affirm/tend/reject trit semantics, @sparseskip codegen, and BET bytecode execution.
Documentation 
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// Module:  stdlib/data/drift_detect.tern
// Purpose: Data Drift Detection
// Author:  RFI-IRFOS
// Ref:     https://ternlang.com

// If drift is detected, the system flags 'tend' (monitor) before fully failing (reject).

fn covariate_drift_trit(train_dist: trit[], live_dist: trit[]) -> trit {
    let diff: float = 0.1; // simulated
    if diff > 0.2 { return reject; } // Drift!
    if diff > 0.05 { return tend; } // Monitor
    return affirm; // Stable
}

fn label_drift_trit(train_labels: trit[], live_labels: trit[]) -> trit {
    return affirm;
}

fn drift_gate_trit(drift_status: trit) -> trit {
    if drift_status == tend { return tend; } // Signal alert
    match drift_status {
        affirm => { return affirm; }
        tend   => { return tend;   }
        reject => { return reject; }
    }
}