import type { ParsedPage, RuleResult, EntityMaskPattern } from "../../types.js";
export interface UniqueValueThresholds {
    /** Unique-content density below this fires (info). Default 0.20. */
    passBelow: number;
    /** Density below this escalates to error. Default 0.12. */
    errorBelow: number;
}
/**
 * Originality as a corpus-relative DENSITY, not an absolute count. Each distinct
 * token is weighted by normalized IDF (ln(N/df)/ln(N)) — 1 if page-exclusive, ~0
 * if on every page — and averaged over the page's distinct tokens. A near-
 * duplicate / boilerplate page scores low regardless of corpus size or length; a
 * large original page stays high. Continuous, so it doesn't shuffle at the margin.
 * Volume is spam/thin-content's job; exact twins are spam/near-duplicate's.
 */
export declare function uniqueValueRule(pages: ParsedPage[], thresholds: UniqueValueThresholds, entityPatterns?: EntityMaskPattern[]): RuleResult[];
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