data-sampler

/**
 * @file relevance.ts
 * @description Relevance-based sampling strategy.
 * Scores chunks by BM25-style term frequency against a user-provided query.
 * Returns chunks sorted by relevance score descending.
 */
import type { Chunk, SamplingConfig } from "../types";
/**
 * Score chunks by BM25-style relevance against a query.
 *
 * Algorithm:
 * 1. Tokenise the query into search terms.
 * 2. Split text into fixed-size chunks using the length-based strategy.
 * 3. Compute BM25 score for each chunk against the query terms.
 * 4. Return chunks sorted by relevance score descending.
 *
 * @param text - The input text to sample.
 * @param config - Sampling configuration (must include query for relevance).
 * @returns Chunks sorted by relevance score descending.
 * @throws If config.query is missing or empty.
 */
export declare function sampleByRelevance(text: string, config: SamplingConfig): readonly Chunk[];
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