/**
 * Expected entropy by syntactic position.
 * Trained on verified-correct code from BAS dataset.
 * Used to compute structural mismatch (BAS feature 5).
 *
 * Maps syntactic context -> expected entropy range.
 * Mismatch = |observed - expected| / max(expected, 1).
 */
export declare class StructuralEntropyModel {
    expectedEntropy(token: string, language: string): number;
    computeMismatch(observedEntropy: number, token: string, language: string): number;
}