/**
 * Advanced Optimization Algorithms
 * More sophisticated optimization techniques
 */
/**
 * TF-IDF based optimization
 * Removes low-importance words based on term frequency
 */
export declare function tfidfOptimize(text: string, threshold?: number): string;
/**
 * Entropy-based optimization
 * Removes high-entropy (random) words that don't contribute to meaning
 */
export declare function entropyOptimize(text: string): string;
/**
 * N-gram optimization
 * Removes redundant n-grams
 */
export declare function ngramOptimize(text: string, n?: number): string;
/**
 * Semantic similarity optimization
 * Removes semantically similar phrases
 */
export declare function semanticSimilarityOptimize(text: string): string;
/**
 * Compression ratio optimization
 * Optimizes to achieve target compression ratio
 */
export declare function compressionRatioOptimize(text: string, targetRatio?: number): string;
/**
 * Adaptive optimization
 * Chooses best algorithm based on text characteristics
 */
export declare function adaptiveOptimize(text: string): string;