/**
 * Calculate confidence score based on business ID match
 * @param transactionBusinessId - Business ID from transaction (can be null)
 * @param documentBusinessId - Business ID from document (can be null)
 * @returns Confidence score: 1.0 (exact match), 0.5 (one or both null), 0.2 (mismatch)
 */
export declare function calculateBusinessConfidence(transactionBusinessId: string | null, documentBusinessId: string | null): number;