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This commit is contained in:
hajimi
@@ -0,0 +1,813 @@
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<?php
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namespace app\common\service\ai;
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use app\common\model\ai\AiConfig;
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use app\common\model\ai\AiKbChunk;
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use app\common\model\ai\AiKbDocument;
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use app\common\model\ai\AiKbQueryLog;
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use app\common\model\ai\AiLog;
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use app\common\model\article\Article;
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use app\common\model\article\ArticleCate;
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use app\common\model\community\CommunityPost;
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use app\common\model\community\CommunityTag;
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use app\common\model\lottery\LotteryAiAnalysis;
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use app\common\model\lottery\LotteryDrawResult;
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use app\common\model\lottery\LotteryGame;
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use app\common\model\match\MatchEvent;
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use app\common\model\match\MatchHistory;
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use app\common\model\match\MatchRecent;
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use think\facade\Db;
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class KbService
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{
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public const COLLECTION_GLOBAL = 'global';
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public static function upsertDocument(string $domain, string $subtype, int $sourceId): array
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{
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$transactionStarted = false;
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try {
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$payload = self::buildDocumentPayload($domain, $subtype, $sourceId);
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if (empty($payload)) {
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self::deleteDocument($domain, $subtype, $sourceId);
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return ['success' => false, 'error' => '源内容不存在或不可用'];
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}
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$contentHash = md5(json_encode([
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$payload['title'],
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$payload['summary'],
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$payload['canonical_text'],
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$payload['keywords'],
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$payload['metadata_json'],
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], JSON_UNESCAPED_UNICODE));
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$document = AiKbDocument::where([
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'domain' => $domain,
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'subtype' => $subtype,
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'source_id' => $sourceId,
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])->findOrEmpty();
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if (
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!$document->isEmpty()
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&& (string) $document->content_hash === $contentHash
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&& (int) $document->is_active === 1
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) {
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$document->save([
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'title' => $payload['title'],
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'summary' => $payload['summary'],
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'keywords' => $payload['keywords'],
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'metadata_json' => $payload['metadata_json'],
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'source_created_at' => $payload['source_created_at'],
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'source_updated_at' => $payload['source_updated_at'],
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'update_time' => time(),
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]);
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return [
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'success' => true,
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'document_id' => (int) $document->id,
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'chunk_count' => (int) AiKbChunk::where('document_id', $document->id)->count(),
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'skipped' => true,
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];
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}
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$chunks = self::splitText(
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$payload['canonical_text'],
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self::intConfig('kb_chunk_size', 600),
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self::intConfig('kb_chunk_overlap', 80)
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);
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if (empty($chunks)) {
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$chunks = [$payload['summary'] ?: $payload['title'] ?: 'empty'];
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}
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$embeddingResult = (new EmbeddingClient())->embed($chunks);
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if (!$embeddingResult['success']) {
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return [
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'success' => false,
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'error' => $embeddingResult['error'] ?? 'embedding失败',
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];
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}
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Db::startTrans();
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$transactionStarted = true;
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if ($document->isEmpty()) {
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$document = AiKbDocument::create([
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'domain' => $domain,
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'subtype' => $subtype,
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'source_id' => $sourceId,
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'title' => $payload['title'],
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'summary' => $payload['summary'],
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'canonical_text' => $payload['canonical_text'],
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'keywords' => $payload['keywords'],
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'metadata_json' => $payload['metadata_json'],
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'source_created_at' => $payload['source_created_at'],
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'source_updated_at' => $payload['source_updated_at'],
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'content_hash' => $contentHash,
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'is_active' => 1,
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'create_time' => time(),
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'update_time' => time(),
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]);
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} else {
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$document->save([
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'title' => $payload['title'],
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'summary' => $payload['summary'],
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'canonical_text' => $payload['canonical_text'],
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'keywords' => $payload['keywords'],
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'metadata_json' => $payload['metadata_json'],
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'source_created_at' => $payload['source_created_at'],
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'source_updated_at' => $payload['source_updated_at'],
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'content_hash' => $contentHash,
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'is_active' => 1,
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'update_time' => time(),
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]);
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}
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AiKbChunk::where('document_id', $document->id)->delete();
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$dimension = (int) ($embeddingResult['dimension'] ?? 0);
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foreach ($chunks as $index => $chunkText) {
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$embedding = $embeddingResult['embeddings'][$index] ?? [];
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AiKbChunk::create([
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'document_id' => $document->id,
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'collection_name' => self::COLLECTION_GLOBAL,
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'chunk_index' => $index,
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'chunk_text' => $chunkText,
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'embedding_json' => $embedding,
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'embedding_model' => $embeddingResult['model'] ?? '',
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'embedding_dim' => $dimension,
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'vector_norm' => self::vectorNorm($embedding),
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'keyword_text' => self::buildKeywordText($payload),
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'create_time' => time(),
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'update_time' => time(),
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]);
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}
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Db::commit();
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return [
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'success' => true,
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'document_id' => (int) $document->id,
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'chunk_count' => count($chunks),
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];
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} catch (\Throwable $e) {
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if ($transactionStarted) {
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Db::rollback();
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}
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return ['success' => false, 'error' => $e->getMessage()];
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}
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}
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public static function deleteDocument(string $domain, string $subtype, int $sourceId): void
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{
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AiKbDocument::where([
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'domain' => $domain,
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'subtype' => $subtype,
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'source_id' => $sourceId,
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])->update([
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'is_active' => 0,
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'update_time' => time(),
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]);
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}
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public static function retrieve(
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string $scene,
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string $queryText,
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array $filters = [],
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array $structuredContext = [],
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int $topK = 8
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): array {
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try {
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$topK = $topK > 0 ? $topK : self::intConfig('kb_final_topk', 8);
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$fulltextTopN = self::intConfig('kb_fulltext_topn', 200);
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$vectorTopN = self::intConfig('kb_vector_topn', 30);
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$candidates = self::loadCandidates($queryText, $filters, $fulltextTopN);
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if (empty($candidates)) {
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self::recordQueryLog($filters, $scene, $queryText, [], 0, 0, AiKbQueryLog::STATUS_SUCCESS);
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return [
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'success' => true,
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'hits' => [],
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'hit_count' => 0,
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'domains' => [],
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'top_scores' => [],
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];
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}
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$queryEmbedding = [];
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$embeddingResult = (new EmbeddingClient())->embed($queryText);
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if (!empty($embeddingResult['success'])) {
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$queryEmbedding = $embeddingResult['embeddings'][0] ?? [];
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}
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foreach ($candidates as &$candidate) {
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$candidate['metadata_json'] = is_array($candidate['metadata_json'])
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? $candidate['metadata_json']
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: (json_decode((string) $candidate['metadata_json'], true) ?: []);
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$candidate['embedding_json'] = is_array($candidate['embedding_json'])
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? $candidate['embedding_json']
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: (json_decode((string) $candidate['embedding_json'], true) ?: []);
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$candidate['vector_score'] = !empty($queryEmbedding)
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? self::cosineSimilarity($queryEmbedding, $candidate['embedding_json'])
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: max(0.0, min(1.0, (float) ($candidate['text_score'] ?? 0)));
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$candidate['freshness_score'] = self::freshnessScore((int) ($candidate['source_updated_at'] ?? 0));
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$candidate['domain_score'] = self::domainScore($candidate, $filters);
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$candidate['match_score'] = self::matchScore($candidate, $filters, $structuredContext);
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$candidate['score'] = round(
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$candidate['vector_score'] * 0.65
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+ $candidate['freshness_score'] * 0.15
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+ $candidate['domain_score'] * 0.10
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+ $candidate['match_score'] * 0.10,
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6
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);
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}
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unset($candidate);
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usort($candidates, static fn(array $a, array $b) => $b['score'] <=> $a['score']);
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$candidates = array_slice($candidates, 0, $vectorTopN);
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$hits = array_map(static function (array $candidate) {
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return [
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'document_id' => (int) $candidate['document_id'],
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'domain' => $candidate['domain'],
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'subtype' => $candidate['subtype'],
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'source_id' => (int) $candidate['source_id'],
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'title' => $candidate['title'],
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'summary' => $candidate['summary'],
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'chunk_text' => $candidate['chunk_text'],
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'score' => (float) $candidate['score'],
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'vector_score' => (float) $candidate['vector_score'],
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'freshness_score' => (float) $candidate['freshness_score'],
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'match_score' => (float) $candidate['match_score'],
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'source_updated_at' => (int) $candidate['source_updated_at'],
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'metadata' => $candidate['metadata_json'],
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];
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}, array_slice($candidates, 0, $topK));
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$recordStatus = AiKbQueryLog::STATUS_SUCCESS;
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self::recordQueryLog(
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$filters,
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$scene,
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$queryText,
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$hits,
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(int) ($embeddingResult['tokens'] ?? 0),
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(int) ($embeddingResult['cost_ms'] ?? 0),
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$recordStatus
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);
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return [
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'success' => true,
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'hits' => $hits,
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'hit_count' => count($hits),
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'domains' => array_values(array_unique(array_column($hits, 'domain'))),
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'top_scores' => array_values(array_map(static fn(array $hit) => $hit['score'], $hits)),
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];
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} catch (\Throwable $e) {
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self::recordQueryLog($filters, $scene, $queryText, [], 0, 0, AiKbQueryLog::STATUS_FAILED);
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return [
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'success' => false,
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'error' => $e->getMessage(),
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'hits' => [],
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'hit_count' => 0,
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'domains' => [],
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'top_scores' => [],
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];
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}
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}
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private static function loadCandidates(string $queryText, array $filters, int $limit): array
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{
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$queryText = trim($queryText);
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$query = Db::name('ai_kb_chunk')->alias('c')
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->join('ai_kb_document d', 'd.id = c.document_id')
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->where('d.is_active', 1)
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->field([
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'c.document_id',
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'c.chunk_text',
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'c.embedding_json',
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'c.embedding_dim',
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'c.vector_norm',
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'd.domain',
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'd.subtype',
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'd.source_id',
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'd.title',
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'd.summary',
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'd.metadata_json',
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'd.source_created_at',
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'd.source_updated_at',
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]);
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if (!empty($filters['domains']) && is_array($filters['domains'])) {
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$query->whereIn('d.domain', $filters['domains']);
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}
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if (!empty($filters['subtypes']) && is_array($filters['subtypes'])) {
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$query->whereIn('d.subtype', $filters['subtypes']);
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}
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$candidates = [];
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if ($queryText !== '') {
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try {
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$ftQuery = clone $query;
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$ftQuery->fieldRaw(
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"MATCH(c.chunk_text, c.keyword_text) AGAINST ('" . addslashes($queryText) . "' IN NATURAL LANGUAGE MODE) AS text_score"
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);
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$ftQuery->whereRaw(
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"MATCH(c.chunk_text, c.keyword_text) AGAINST ('" . addslashes($queryText) . "' IN NATURAL LANGUAGE MODE)"
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);
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$candidates = $ftQuery->order('text_score', 'desc')->limit($limit)->select()->toArray();
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} catch (\Throwable $e) {
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$candidates = [];
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}
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}
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if (empty($candidates)) {
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$keywordParts = self::splitQueryTerms($queryText);
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$fallback = clone $query;
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foreach (array_slice($keywordParts, 0, 3) as $term) {
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$fallback->where(function ($subQuery) use ($term) {
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$subQuery->whereLike('c.chunk_text', '%' . $term . '%')
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->whereOrLike('d.title', '%' . $term . '%')
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->whereOrLike('d.keywords', '%' . $term . '%');
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});
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}
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$candidates = $fallback->order('d.source_updated_at', 'desc')->limit($limit)->select()->toArray();
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foreach ($candidates as &$candidate) {
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$candidate['text_score'] = 0.2;
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}
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unset($candidate);
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}
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if (!empty($filters['exclude_source']['domain']) && !empty($filters['exclude_source']['source_id'])) {
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$excludeDomain = $filters['exclude_source']['domain'];
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$excludeSourceId = (int) $filters['exclude_source']['source_id'];
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$candidates = array_values(array_filter($candidates, static function (array $candidate) use ($excludeDomain, $excludeSourceId) {
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return !($candidate['domain'] === $excludeDomain && (int) $candidate['source_id'] === $excludeSourceId);
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}));
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}
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return $candidates;
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}
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private static function buildDocumentPayload(string $domain, string $subtype, int $sourceId): array
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{
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return match ($domain . ':' . $subtype) {
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'article:article' => self::buildArticlePayload($sourceId),
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'post:post' => self::buildPostPayload($sourceId),
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'lottery:draw_result' => self::buildLotteryDrawResultPayload($sourceId),
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'lottery:ai_history' => self::buildLotteryAiHistoryPayload($sourceId),
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'match:event' => self::buildMatchEventPayload($sourceId),
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default => [],
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};
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}
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private static function buildArticlePayload(int $sourceId): array
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{
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$article = Article::where('id', $sourceId)->findOrEmpty();
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if ($article->isEmpty() || (int) $article->is_show !== 1 || !empty($article->delete_time)) {
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return [];
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}
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$data = $article->toArray();
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$ext = is_array($data['ext'] ?? null) ? $data['ext'] : (json_decode((string) ($data['ext'] ?? ''), true) ?: []);
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$translated = trim((string) ($ext['translated_content'] ?? ''));
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$content = self::normalizeHtmlText($translated !== '' ? $translated : (string) ($data['content'] ?? ''));
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$summary = trim((string) ($data['abstract'] ?: $data['desc'] ?: ''));
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$cateName = ArticleCate::where('id', $data['cid'] ?? 0)->value('name') ?: '';
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$keywords = array_filter([
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$data['title'] ?? '',
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$cateName,
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$data['author'] ?? '',
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$data['category'] ?? '',
|
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]);
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return [
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'title' => (string) ($data['title'] ?? ''),
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'summary' => self::normalizePlainText($summary),
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'canonical_text' => trim(implode("\n\n", array_filter([
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$data['title'] ?? '',
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$summary,
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$content,
|
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]))),
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'keywords' => implode(',', array_unique($keywords)),
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'metadata_json' => [
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'cid' => (int) ($data['cid'] ?? 0),
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'cate_name' => $cateName,
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'author' => (string) ($data['author'] ?? ''),
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'category' => (string) ($data['category'] ?? ''),
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'article_id' => (int) ($data['article_id'] ?? 0),
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'published_at' => (string) ($data['published_at'] ?? ''),
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'is_video' => (int) ($data['is_video'] ?? 0),
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],
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'source_created_at' => (int) ($data['create_time'] ?? 0),
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'source_updated_at' => (int) ($data['update_time'] ?? $data['create_time'] ?? 0),
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];
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}
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private static function buildPostPayload(int $sourceId): array
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{
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$post = CommunityPost::where('id', $sourceId)->findOrEmpty();
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if ($post->isEmpty() || (int) $post->status !== 1 || !empty($post->delete_time)) {
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return [];
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}
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$data = $post->toArray();
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$ext = is_array($data['ext'] ?? null) ? $data['ext'] : (json_decode((string) ($data['ext'] ?? ''), true) ?: []);
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$tagIds = Db::name('community_post_tag')->where('post_id', $sourceId)->column('tag_id');
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$tags = !empty($tagIds)
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? CommunityTag::whereIn('id', $tagIds)->column('name')
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: [];
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|
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$segments = array_filter([
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(string) ($data['content'] ?? ''),
|
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(string) ($ext['translated_content'] ?? ''),
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(string) ($ext['lottery_analysis_content'] ?? ''),
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implode(' ', $tags),
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]);
|
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$canonicalText = self::normalizePlainText(implode("\n\n", $segments));
|
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$summary = self::truncateText($canonicalText, 200);
|
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|
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return [
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'title' => self::truncateText($canonicalText, 40) ?: '社区帖子#' . $sourceId,
|
||||
'summary' => $summary,
|
||||
'canonical_text' => $canonicalText,
|
||||
'keywords' => implode(',', array_unique($tags)),
|
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'metadata_json' => [
|
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'post_type' => (int) ($data['post_type'] ?? 0),
|
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'match_id' => (int) ($data['match_id'] ?? 0),
|
||||
'is_paid' => (int) ($data['is_paid'] ?? 0),
|
||||
'user_id' => (int) ($data['user_id'] ?? 0),
|
||||
'tags' => array_values($tags),
|
||||
],
|
||||
'source_created_at' => (int) ($data['create_time'] ?? 0),
|
||||
'source_updated_at' => (int) ($data['update_time'] ?? $data['create_time'] ?? 0),
|
||||
];
|
||||
}
|
||||
|
||||
private static function buildLotteryDrawResultPayload(int $sourceId): array
|
||||
{
|
||||
$row = LotteryDrawResult::where('id', $sourceId)->findOrEmpty();
|
||||
if ($row->isEmpty()) {
|
||||
return [];
|
||||
}
|
||||
|
||||
$data = $row->toArray();
|
||||
$game = LotteryGame::where('code', $data['code'])->field('name,template')->findOrEmpty()->toArray();
|
||||
$numbers = array_filter(explode(',', (string) ($data['draw_code'] ?? '')));
|
||||
$trend = is_array($data['trend'] ?? null) ? $data['trend'] : (json_decode((string) ($data['trend'] ?? ''), true) ?: []);
|
||||
$trendText = self::normalizePlainText(json_encode($trend, JSON_UNESCAPED_UNICODE));
|
||||
$title = ($game['name'] ?? $data['code']) . ' 第' . $data['issue'] . '期开奖';
|
||||
$summary = sprintf(
|
||||
'%s 于 %s 开奖，开奖号码为 %s。',
|
||||
$title,
|
||||
(string) ($data['draw_time'] ?? ''),
|
||||
implode('、', $numbers)
|
||||
);
|
||||
|
||||
return [
|
||||
'title' => $title,
|
||||
'summary' => $summary,
|
||||
'canonical_text' => trim(implode("\n", array_filter([
|
||||
$summary,
|
||||
!empty($data['next_issue']) ? '下一期期号：' . $data['next_issue'] : '',
|
||||
!empty($data['next_time']) ? '下期开奖时间：' . $data['next_time'] : '',
|
||||
$trendText !== 'null' ? '走势数据：' . $trendText : '',
|
||||
]))),
|
||||
'keywords' => implode(',', array_filter([
|
||||
$data['code'],
|
||||
$game['name'] ?? '',
|
||||
$game['template'] ?? '',
|
||||
$data['issue'] ?? '',
|
||||
])),
|
||||
'metadata_json' => [
|
||||
'code' => (string) ($data['code'] ?? ''),
|
||||
'issue' => (string) ($data['issue'] ?? ''),
|
||||
'template' => (string) ($game['template'] ?? ''),
|
||||
'game_name' => (string) ($game['name'] ?? ''),
|
||||
'draw_time' => (string) ($data['draw_time'] ?? ''),
|
||||
],
|
||||
'source_created_at' => (int) ($data['create_time'] ?? 0),
|
||||
'source_updated_at' => (int) ($data['update_time'] ?? $data['create_time'] ?? 0),
|
||||
];
|
||||
}
|
||||
|
||||
private static function buildMatchEventPayload(int $sourceId): array
|
||||
{
|
||||
$match = MatchEvent::where('id', $sourceId)->findOrEmpty();
|
||||
if ($match->isEmpty() || (int) ($match->is_show ?? 1) !== 1) {
|
||||
return [];
|
||||
}
|
||||
|
||||
$data = $match->toArray();
|
||||
$homeTeam = (string) ($data['home_team'] ?? '');
|
||||
$awayTeam = (string) ($data['away_team'] ?? '');
|
||||
$league = (string) ($data['league_name'] ?? '');
|
||||
$matchTime = !empty($data['match_time']) && is_numeric($data['match_time'])
|
||||
? date('Y-m-d H:i', (int) $data['match_time'])
|
||||
: (string) ($data['match_time'] ?? '');
|
||||
|
||||
$history = MatchHistory::where(function ($query) use ($homeTeam, $awayTeam) {
|
||||
$query->where([['home_team', '=', $homeTeam], ['away_team', '=', $awayTeam]])
|
||||
->whereOr([['home_team', '=', $awayTeam], ['away_team', '=', $homeTeam]]);
|
||||
})->order('match_time desc')->limit(5)->select()->toArray();
|
||||
|
||||
$homeRecent = MatchRecent::where('team_name', $homeTeam)
|
||||
->order('match_time desc')->limit(5)->select()->toArray();
|
||||
$awayRecent = MatchRecent::where('team_name', $awayTeam)
|
||||
->order('match_time desc')->limit(5)->select()->toArray();
|
||||
|
||||
$title = trim($homeTeam . ' vs ' . $awayTeam);
|
||||
$summary = sprintf(
|
||||
'%s %s，%s 对阵 %s，比赛时间 %s，当前比分 %s-%s。',
|
||||
$league,
|
||||
$title,
|
||||
$homeTeam,
|
||||
$awayTeam,
|
||||
$matchTime,
|
||||
$data['home_score'] ?? 0,
|
||||
$data['away_score'] ?? 0
|
||||
);
|
||||
|
||||
$canonical = [
|
||||
$summary,
|
||||
'赔率：主胜' . ($data['home_odds'] ?? '-') . '，平局' . ($data['draw_odds'] ?? '-') . '，客胜' . ($data['away_odds'] ?? '-') . '。',
|
||||
'历史交锋：' . self::normalizePlainText(json_encode($history, JSON_UNESCAPED_UNICODE)),
|
||||
$homeTeam . '近期战绩：' . self::normalizePlainText(json_encode($homeRecent, JSON_UNESCAPED_UNICODE)),
|
||||
$awayTeam . '近期战绩：' . self::normalizePlainText(json_encode($awayRecent, JSON_UNESCAPED_UNICODE)),
|
||||
];
|
||||
|
||||
return [
|
||||
'title' => $title ?: '赛事#' . $sourceId,
|
||||
'summary' => self::normalizePlainText($summary),
|
||||
'canonical_text' => trim(implode("\n", array_filter($canonical))),
|
||||
'keywords' => implode(',', array_filter([$league, $homeTeam, $awayTeam])),
|
||||
'metadata_json' => [
|
||||
'league' => $league,
|
||||
'teams' => array_values(array_filter([$homeTeam, $awayTeam])),
|
||||
'match_time' => $matchTime,
|
||||
'status' => (int) ($data['status'] ?? 0),
|
||||
],
|
||||
'source_created_at' => (int) ($data['create_time'] ?? $data['match_time'] ?? 0),
|
||||
'source_updated_at' => (int) ($data['update_time'] ?? $data['match_time'] ?? $data['create_time'] ?? 0),
|
||||
];
|
||||
}
|
||||
|
||||
private static function buildLotteryAiHistoryPayload(int $sourceId): array
|
||||
{
|
||||
$row = LotteryAiAnalysis::where('id', $sourceId)->findOrEmpty();
|
||||
if ($row->isEmpty()) {
|
||||
return [];
|
||||
}
|
||||
|
||||
$data = $row->toArray();
|
||||
$resultText = is_string($data['result'] ?? '')
|
||||
? $data['result']
|
||||
: json_encode($data['result'] ?? [], JSON_UNESCAPED_UNICODE);
|
||||
$canonicalText = self::normalizePlainText($resultText);
|
||||
$title = sprintf('%s 第%s期 %s 历史AI分析', $data['code'] ?? '彩票', $data['issue'] ?? '-', $data['module'] ?? 'module');
|
||||
|
||||
return [
|
||||
'title' => $title,
|
||||
'summary' => self::truncateText($canonicalText, 220),
|
||||
'canonical_text' => $canonicalText,
|
||||
'keywords' => implode(',', array_filter([
|
||||
$data['code'] ?? '',
|
||||
$data['issue'] ?? '',
|
||||
$data['module'] ?? '',
|
||||
])),
|
||||
'metadata_json' => [
|
||||
'code' => (string) ($data['code'] ?? ''),
|
||||
'issue' => (string) ($data['issue'] ?? ''),
|
||||
'module' => (string) ($data['module'] ?? ''),
|
||||
],
|
||||
'source_created_at' => (int) ($data['create_time'] ?? 0),
|
||||
'source_updated_at' => (int) ($data['update_time'] ?? $data['create_time'] ?? 0),
|
||||
];
|
||||
}
|
||||
|
||||
private static function buildKeywordText(array $payload): string
|
||||
{
|
||||
return implode(' ', array_filter([
|
||||
$payload['title'] ?? '',
|
||||
$payload['summary'] ?? '',
|
||||
$payload['keywords'] ?? '',
|
||||
json_encode($payload['metadata_json'] ?? [], JSON_UNESCAPED_UNICODE),
|
||||
]));
|
||||
}
|
||||
|
||||
private static function splitText(string $text, int $chunkSize, int $overlap): array
|
||||
{
|
||||
$text = trim($text);
|
||||
if ($text === '') {
|
||||
return [];
|
||||
}
|
||||
|
||||
$length = mb_strlen($text);
|
||||
if ($length <= $chunkSize) {
|
||||
return [$text];
|
||||
}
|
||||
|
||||
$chunks = [];
|
||||
$start = 0;
|
||||
while ($start < $length) {
|
||||
$chunks[] = mb_substr($text, $start, $chunkSize);
|
||||
if ($start + $chunkSize >= $length) {
|
||||
break;
|
||||
}
|
||||
$start += max(1, $chunkSize - $overlap);
|
||||
}
|
||||
|
||||
return array_values(array_filter(array_map('trim', $chunks)));
|
||||
}
|
||||
|
||||
private static function cosineSimilarity(array $a, array $b): float
|
||||
{
|
||||
if (empty($a) || empty($b) || count($a) !== count($b)) {
|
||||
return 0.0;
|
||||
}
|
||||
|
||||
$dot = 0.0;
|
||||
$normA = 0.0;
|
||||
$normB = 0.0;
|
||||
foreach ($a as $i => $value) {
|
||||
$value = (float) $value;
|
||||
$other = (float) ($b[$i] ?? 0.0);
|
||||
$dot += $value * $other;
|
||||
$normA += $value * $value;
|
||||
$normB += $other * $other;
|
||||
}
|
||||
|
||||
if ($normA <= 0.0 || $normB <= 0.0) {
|
||||
return 0.0;
|
||||
}
|
||||
|
||||
return max(0.0, min(1.0, $dot / (sqrt($normA) * sqrt($normB))));
|
||||
}
|
||||
|
||||
private static function vectorNorm(array $vector): float
|
||||
{
|
||||
$sum = 0.0;
|
||||
foreach ($vector as $value) {
|
||||
$value = (float) $value;
|
||||
$sum += $value * $value;
|
||||
}
|
||||
return $sum > 0 ? sqrt($sum) : 0.0;
|
||||
}
|
||||
|
||||
private static function freshnessScore(int $timestamp): float
|
||||
{
|
||||
if ($timestamp <= 0) {
|
||||
return 0.1;
|
||||
}
|
||||
|
||||
$days = max(0, (time() - $timestamp) / 86400);
|
||||
if ($days <= 1) {
|
||||
return 1.0;
|
||||
}
|
||||
if ($days <= 7) {
|
||||
return 0.85;
|
||||
}
|
||||
if ($days <= 30) {
|
||||
return 0.65;
|
||||
}
|
||||
if ($days <= 180) {
|
||||
return 0.4;
|
||||
}
|
||||
return 0.2;
|
||||
}
|
||||
|
||||
private static function domainScore(array $candidate, array $filters): float
|
||||
{
|
||||
$preferred = $filters['preferred_domain'] ?? '';
|
||||
if ($preferred !== '' && ($candidate['domain'] ?? '') === $preferred) {
|
||||
return 1.0;
|
||||
}
|
||||
return 0.5;
|
||||
}
|
||||
|
||||
private static function matchScore(array $candidate, array $filters, array $structuredContext): float
|
||||
{
|
||||
$score = 0.2;
|
||||
$metadata = $candidate['metadata_json'] ?? [];
|
||||
$title = self::normalizePlainText((string) ($candidate['title'] ?? ''));
|
||||
$summary = self::normalizePlainText((string) ($candidate['summary'] ?? ''));
|
||||
$chunkText = self::normalizePlainText((string) ($candidate['chunk_text'] ?? ''));
|
||||
$haystack = $title . ' ' . $summary . ' ' . $chunkText;
|
||||
|
||||
if (!empty($filters['cid']) && !empty($metadata['cid']) && (int) $filters['cid'] === (int) $metadata['cid']) {
|
||||
$score += 0.4;
|
||||
}
|
||||
if (!empty($filters['code']) && !empty($metadata['code']) && $filters['code'] === $metadata['code']) {
|
||||
$score += 0.4;
|
||||
}
|
||||
if (!empty($filters['issue']) && !empty($metadata['issue']) && $filters['issue'] === $metadata['issue']) {
|
||||
$score += 0.2;
|
||||
}
|
||||
if (!empty($filters['tags']) && !empty($metadata['tags']) && is_array($metadata['tags'])) {
|
||||
$common = array_intersect($filters['tags'], $metadata['tags']);
|
||||
if (!empty($common)) {
|
||||
$score += 0.3;
|
||||
}
|
||||
}
|
||||
if (!empty($structuredContext['title'])) {
|
||||
$sourceTitle = self::normalizePlainText((string) $structuredContext['title']);
|
||||
if ($title !== '' && $sourceTitle !== '' && mb_strpos($title, mb_substr($sourceTitle, 0, 8)) !== false) {
|
||||
$score += 0.2;
|
||||
}
|
||||
}
|
||||
if (!empty($structuredContext['league'])) {
|
||||
$league = self::normalizePlainText((string) $structuredContext['league']);
|
||||
if ($league !== '' && mb_strpos($haystack, $league) !== false) {
|
||||
$score += 0.15;
|
||||
}
|
||||
}
|
||||
if (!empty($structuredContext['teams']) && is_array($structuredContext['teams'])) {
|
||||
$teamHits = 0;
|
||||
foreach ($structuredContext['teams'] as $team) {
|
||||
$team = self::normalizePlainText((string) $team);
|
||||
if ($team !== '' && mb_strpos($haystack, $team) !== false) {
|
||||
$teamHits++;
|
||||
}
|
||||
}
|
||||
if ($teamHits > 0) {
|
||||
$score += min(0.3, 0.12 * $teamHits);
|
||||
}
|
||||
}
|
||||
|
||||
return max(0.0, min(1.0, $score));
|
||||
}
|
||||
|
||||
private static function recordQueryLog(
|
||||
array $filters,
|
||||
string $scene,
|
||||
string $queryText,
|
||||
array $hits,
|
||||
int $tokens,
|
||||
int $costMs,
|
||||
int $status
|
||||
): void {
|
||||
try {
|
||||
$userId = (int) ($filters['user_id'] ?? 0);
|
||||
$refId = (int) ($filters['ref_id'] ?? 0);
|
||||
AiKbQueryLog::create([
|
||||
'user_id' => $userId,
|
||||
'scene' => $scene,
|
||||
'ref_id' => $refId,
|
||||
'query_text' => $queryText,
|
||||
'filters_json' => $filters,
|
||||
'hit_docs_json' => $hits,
|
||||
'tokens_used' => $tokens,
|
||||
'cost_ms' => $costMs,
|
||||
'status' => $status,
|
||||
'create_time' => time(),
|
||||
'update_time' => time(),
|
||||
]);
|
||||
|
||||
AiLog::create([
|
||||
'user_id' => $userId,
|
||||
'type' => 6,
|
||||
'ref_id' => $refId,
|
||||
'tokens_used' => $tokens,
|
||||
'cost_ms' => $costMs,
|
||||
'status' => $status === AiKbQueryLog::STATUS_SUCCESS ? 1 : 2,
|
||||
]);
|
||||
} catch (\Throwable $e) {
|
||||
// Ignore logging failures to avoid affecting main flow.
|
||||
}
|
||||
}
|
||||
|
||||
private static function splitQueryTerms(string $queryText): array
|
||||
{
|
||||
$queryText = trim(self::normalizePlainText($queryText));
|
||||
if ($queryText === '') {
|
||||
return [];
|
||||
}
|
||||
|
||||
$terms = preg_split('/[\s,，。！？；、:：\/\\\\]+/u', $queryText) ?: [];
|
||||
$terms = array_values(array_filter(array_map('trim', $terms), static fn(string $term) => mb_strlen($term) >= 2));
|
||||
return array_unique($terms);
|
||||
}
|
||||
|
||||
private static function normalizeHtmlText(string $html): string
|
||||
{
|
||||
$html = str_replace(['<br>', '<br/>', '<br />', '</p>', '</div>', '</li>'], "\n", $html);
|
||||
return self::normalizePlainText(strip_tags($html));
|
||||
}
|
||||
|
||||
private static function normalizePlainText(string $text): string
|
||||
{
|
||||
$text = html_entity_decode($text, ENT_QUOTES | ENT_HTML5, 'UTF-8');
|
||||
$text = preg_replace('/\s+/u', ' ', trim($text)) ?: '';
|
||||
return trim($text);
|
||||
}
|
||||
|
||||
private static function truncateText(string $text, int $length): string
|
||||
{
|
||||
$text = trim($text);
|
||||
if ($text === '') {
|
||||
return '';
|
||||
}
|
||||
return mb_strlen($text) > $length ? mb_substr($text, 0, $length) . '...' : $text;
|
||||
}
|
||||
|
||||
private static function intConfig(string $name, int $default): int
|
||||
{
|
||||
return (int) AiConfig::getVal($name, (string) $default);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user