/**
 * Validation Utility Functions for Machine Learning
 *
 * Provides input validation helpers for ML algorithms
 */
import { HMMModel } from '../schemas/HMMModelSchema';
/**
 * Validate price array
 *
 * @param prices - Array of prices
 * @throws Error if validation fails
 */
export declare function validatePriceArray(prices: number[]): void;
/**
 * Validate feature matrix
 *
 * @param features - T x D matrix of features
 * @throws Error if validation fails
 */
export declare function validateFeatureMatrix(features: number[][]): void;
/**
 * Validate HMM parameters
 *
 * @param model - HMM model to validate
 * @throws Error if validation fails
 */
export declare function validateHMMParameters(model: HMMModel): void;
/**
 * Validate number of states
 *
 * @param numStates - Number of states
 * @param observations - Observation matrix
 * @throws Error if validation fails
 */
export declare function validateNumStates(numStates: number, observations: number[][]): void;